Southern Avionics SD50 Non Directional RadioBeacon (NDB) User Manual fcc short

Southern Avionics Company Non Directional RadioBeacon (NDB) fcc short

SD50 Manual

Box 5345 • Beaumont • Texas • 77726-5345 • USA • Phone (409) 842-1717 • Fax (409) 842-2987 www.southernavionics.comSD SERIES TRANSMITTERMANUAL # SD410002 REVISION: ADRAFTPrintedMay 27, 2004
Box 5345 • Beaumont • Texas • 77726-5345 • USA • Phone (409) 842-1717 • Fax (409) 842-2987 www.southernavionics.comSOUTHERN AVIONICS COMPANYMANUFACTURERS OF LOW FREQUENCY RADIOBEACONS AND ASSOCIATED PRODUCTS5000 BELMONT, P.O. BOX 5345 / BEAUMONT, TEXAS 77726-5345 USATELEPHONE: (409) 842-1717; FAX: (409) 842-2987; CABLE: SAC; TELEX; 77-9450 ONE YEAR LIMITED WARRANTYSOUTHERN AVIONICS COMPANY (hereinafter called COMPANY) warrants to the original purchaser for a period ofone year from the date of delivery to the original purchaser, that the goods sold pursuant to this COMPANY invoicewere at the time of the delivery, free from defects resulting from faulty material or workmanship. THIS LIMITEDWARRANTY IS IN LIEU OF ALL OTHER REPRESENTATIONS AND EXPRESS WARRANTIES. This warranty ismade for the benefit of the initial purchaser only and is not made for the benefit of any party other than initial purchaser.It applies only if the goods are submitted to normal use and service and does not apply if the goods aremisused or mismatched with other goods such as antennas, couplers, or any other third party goods thathave not been approved by SAC in writing for use with SAC equipment.ALL IMPLIED WARRANTIES EXISTING UNDER THE LAW ARE HEREBY EXPRESSLY NEGATED;PARTICULARLY, COMPANY HEREBY NEGATES AND DISCLAIMS THE IMPLIED WARRANTY OFMERCHANTABILITY AND IMPLIED WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE.If Purchaser believes that these goods do not comply with the express warranty stated above or any existing andapplicable implied warranty which under the law cannot be disclaimed or negated as provided above, then purchasermay request the COMPANY inspect such goods by mailing, within sixty (60) days after purchaser knows or shouldhave known that the goods allegedly do not conform with the warranty, postage prepaid, to COMPANY, P.O. Box 5345,5000 Belmont, Beaumont, Texas, 77726 Attention: President, a writing specifying (a) purchaser's name, address, andtelephone number, (b) date of purchase, (c) COMPANY distributor or location from which the goods were purchased,(d) location of the goods in question (or include the goods in question with the notice), and (e) brief description of thealleged nonconformity with the warranty. If the goods are covered by, and do not conform with, the warranty,COMPANY will repair or replace F.O.B. point of manufacture any such goods; but in no event will COMPANY beobligated or required to remove the non-conforming goods from their place of installation or to install the replacementgoods. All replacement goods are warranted to the extent provided herein for the remaining term of this warranty.In the event purchaser chooses to commence an action for breach of warranty or breach of contract arising out of thesale of the goods pursuant to this invoice, the purchaser must commence such action within one year after the courseof action accrues.THE REMEDY PROVIDED HEREIN SHALL BE THE SOLE AND EXCLUSIVE REMEDY FOR BREACH OF THISWARRANTY, FOR ANY BREACH OF ANY IMPLIED WARRANTY EXISTING AND APPLICABLE UNDER THE LAW(TO THE EXTENT THAT ANY SUCH WARRANTY HAS NOT BEEN SUCCESSFULLY NEGATED AND DISCLAIMEDHEREINABOVE), AND FOR ANY ACT OF NEGLIGENCE OR ANY OTHER TORTIOUS ACT COMMITTED BYCOMPANY, AND IN NO EVENT SHALL THE COMPANY BE LIABLE TO PURCHASER OR ANY THIRD PARTY FORANY INCIDENTAL, CONSEQUENTIAL OR SPECIAL DAMAGES RESULTING FROM ANY DEFECT IN THE GOODSOR ANY FAILURE OF THE GOODS TO CONFORM WITH THIS WARRANTY OR ANY IMPLIED WARRANTYEXISTING AND APPLICABLE UNDER THE LAW (TO THE EXTENT THAT ANY SUCH IMPLIED WARRANTY HASNOT BEEN SUCCESSFULLY NEGATED AND DISCLAIMED HEREINABOVE.)
Box 5345 • Beaumont • Texas • 77726-5345 • USA • Phone (409) 842-1717 • Fax (409) 842-2987 www.southernavionics.comREPAIR POLICYRepair Rate: One Hundred Twenty ($120) Dollars per hour plus Parts.Minimum Repair Cost: One Hundred Twenty ($120) Dollars.Maximum Repair Cost: Seventy-five (75) percent of the price for a new or reconditioned item or its directreplacement. If an item sent to SAC for Repair is determined to be non-repairable and is replaced by anew or reconditioned item, the Customer is not charged for any costs incurred in time and materials spentin efforts to repair that particular non-repairable item. The Customer will only be charged the price of thereplacement item. All non-repairable items are returned to the Customer. However if the Customer doesnot purchase a new or reconditioned item to replace that particular non-repairable item the MinimumRepair Cost is applied.Turnaround Time: Southern Avionics Company’s standard Turnaround Time is 45 days. Customers thatrequest the Repair be processed in less than 45 days will be charged an Expediting Fee of Thirty ($30)Dollars per hour in addition to the standard Repair Rate.RMA (Return Material Authorization): Southern Avionics Company requires all items submitted to ourfactory for Repair must be accompanied by a Return Merchandise Authorization (RMA) Number. Pleasemake a RMA request before returning items to Southern Avionics Company. This is the best way tocommunicate with us and ensure that your needs are taken care of. A RMA Number may be obtained bycontacting Angela Flores, Sales Administrator either by telephone at 409-842-1717, extension 111 or by e-mail at angelaf@southernavionics.com .Rejection: Southern Avionics Company reserves the right to refuse repair of any items that SAC deemsto be non-repairable to our factory standards. Pads lifted from circuit boards or burnt circuit boards areexamples of grounds for rejection.Freight Costs: The Customer pays for freight costs to and from Southern Avionics Company. SAC will notbe responsible for any loss or damage of any items in transit either to or from SAC.Expiration of Support: SAC supports all items manufactured by SAC for no less than ten (10) years fromdate of original purchase. SAC will not repair any items that are older than ten (10) years old. Any itemssent to SAC for repair that are more than ten (10) years old will be returned to the sender freight collect tothe return address provided unless otherwise specified in writing prior to the receipt of the returned item bySAC.
Box 5345 • Beaumont • Texas • 77726-5345 • USA • Phone (409) 842-1717 • Fax (409) 842-2987 www.southernavionics.comSerial Numbers: Southern Avionics Company will not repair any items that are not accompanied by theSerial Numbers of the finished goods associated with the items.Estimates: SAC will not provide any estimates of costs other than the costs outlined above.Warranty: Repairs are guaranteed for 90 days after shipment. Warranty applies only to Repairs madeand does not cover subsequent equipment failures not associated with the previous Repair.
SD SERIES TRANSMITTER i • • • •••SOUTHERN AVIONICS COMPANYTABLE OF CONTENTS 1 INTRODUCTION: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.2 SPECIFICATIONS: SD Series Dual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 General Description: SD25 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 General Description: SD50 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 General Description: SD100 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 2 THEORY OF OPERATION, SD SERIES UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 2.1 Functional Description: SD Series Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 2.2 SLF31002/00 - Basic Dual Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 2.2.1 P.A. PCB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 SLP10001 - Assemlby, PCB, RF Power Amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 2.2.2 RF PA Power Supply PCB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 SLP10003 -Assembly, PCB, RF PA Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 2.2.3 Analog I/O and Audio PCB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 SLP10005 - Assembly, Analog I/O and Audio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 2.2.4 Controller / Monitor PCB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 SLP10007 - Assembly, PCB, Controller / Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 2.2.4 Digital I/O and PWM PCB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 SLP10009 - Assembly, PCB, Digital I/O and PWM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 2.3 Detailed Circuit Analysis: Dual Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 2.3.1 SLP10012 - Controller Motherboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 2.3.2 Dual Low Voltage Power Supply PCB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 SLP10017 - Assembly, Low voltage Power Supply (Coldfire) . . . . . . . . . . . . . . . . . . . . . 61 2.4 SLE10004 - Load Center . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 2.4.1 User Interface PCB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66 SLP10006 - Assembly, PCB, User Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67 2.5 SLM10005 - Control Monitor Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70 2.5.1 Local Control PCB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71 2.5.2 Audio PCB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77 2.5.1 Filter/Bridge PCB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78 SLP10002/01 - Assembly, PCB Filter/Bridge (Standard Band) . . . . . . . . . . . . . . . . . . . . 79 3 INSTALLATION AND OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81 4 MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101 4.1 ALIGNMENT AND ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101 4.2 CONTROL MONITOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101 4.2.1 ANALOG I/O ALIGNMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101 4.2.2 DIGITAL I/O ALIGNMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103 4.2.3 AUDIO OPTION (AWOS) ALIGNMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104 4.3 TRANSMITTER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106 4.3.1 PA POWER SUPPLY ALIGNMENT (PAPS) . . . . . . . . . . . . . . . . . . . . . . . . . . . 106 4.3.2 RF POWER AMPLIFIER ALIGNMENT (PA) . . . . . . . . . . . . . . . . . . . . . . . . . . . 109 4.3.3 FILTER / BRIDGE ALIGNMENT (FB) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112 5 ANTENNAS: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115 5.1 Mast Antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115 5.2 "H" Antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116 5.3 50-Foot Guyed Mast Antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116 5.4 Symmetrical "T" Antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
SD SERIES TRANSMITTER ii • • • •••SOUTHERN AVIONICS COMPANYTABLE OF CONTENTS 6 PARTS LISTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118 SLF31002/00 - ASSY, TRANSMITTER, SD SERIES DUAL (BASIC) . . . . . . . . . . . . 118 SLE10004 - ASSY, LOAD CENTER (SD SERIES) . . . . . . . . . . . . . . . . . . . . . . . . . . . 119 SLE10031 - ASSY, FINAL TRANSMITTER DUAL (SD SERIES) . . . . . . . . . . . . . . . 120 SLM10001 - ASSY, TRANSMITTER ENCLOSURE (SD SERIES) . . . . . . . . . . . . . . 121 SLM10005 - ASSY, CONTROL MONITOR PANEL WITH APPLIQUE . . . . . . . . . . 122
SD SERIES TRANSMITTER iii • • • •••SOUTHERN AVIONICS COMPANYTABLE OF FIGURES SDE10018 - DUAL TRANSMITTER PORTRAIT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11SDE10018 - DUAL TRANSMITTER PORTRAIT WITH LOCAL CONTROL PANEL . . . . . 12SDE10018 - TRANSMITTER ENCLOSURE DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . 13SDB10001 - SD SERIES SINGLE TRANSMITTER BLOCK DIAGRAM. . . . . . . . . . . . . . . . 23SDB10002 - SD SERIES DUAL TRANSMITTER BLOCK DIAGRAM . . . . . . . . . . . . . . . . . 24SDF31002 - SD SERIES BASIC DUAL TRANSMITTER DIAGRAM . . . . . . . . . . . . . . . . . . 25SDF31002 - SD SERIES BASIC DUAL TRANSMITTER DIAGRAM - CONTINUED . . . . . 26SDE10034 - SINGLE CONTROL DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27SDE10032 - DUAL CONTROL 3U DIAGRAM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28SDE10033 - DUAL TRANSMITTER CONTROL 6U DIAGRAM . . . . . . . . . . . . . . . . . . . . . . 29SDE10004 - SD SERIES LOAD CENTER DRAWER DIAGRAM. . . . . . . . . . . . . . . . . . . . . . 65SDM10005 - LOCAL CONTROL PANEL DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70649 - DIAGRAM, ANTENNA REACTANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
SD SERIES TRANSMITTER SECTION 1 1 • • • •••SOUTHERN AVIONICS COMPANY1 INTRODUCTION: SD Series Introduction The SD Series model beacon transmitters are computer controlled systems designed around the Motorola ColdFire® microprocessor. These systems are capable of remote monitoring and maintenance via several communication methods including RS232, RS 422, and RS485 protocols. An optional operator front panel offers the common user controls normally found on an analog transmitter. These panels may also be used for remote control. With the exception of main power application, all aspects of transmitter setup and operation come under the direct control of the Controller / Monitor. The following are all programmable:* Direct Digital Synthesis (DDS) of RF frequency and Audio Tone Frequency * Identifier Morse code dot, dash and space intervals.* Customer IDENT sequence* Standard Alarms* Additional Fault handling based on multipoint voltage, current and temperature monitoring* Transfer Criteria (Dual Only)* Power limits* Modulation limitsThe Controller / Monitor itself can be controlled and monitored by another computer system connected locally via one of the hard wire protocols mentioned above or remotely using phone lines or any other carrier which can handle a standard US Robotics modem spectral output. SDSeries General Theory of Operation
SD SERIES TRANSMITTER2 • • • •••SOUTHERN AVIONICS COMPANY1.2 SPECIFICATIONS: SD Series Dual General Description: SD25This non-directional beacon is an Amplitude Modulated transmitter with an adjustable output power from 5 to 25 watts. The transmitter uses switching technology in the power amplifiers and modulator / regulator modules resulting in a highly efficient system, in a small package.The exciter portion consists of an embedded 32-bit micro controller, an I/O interface circuit, an A/D converter, a monitor circuitry, and an optional voice processing circuitry in a single 3U enclosure. The controller has one "stored" non-volatile memory, redundant RF DDS (Direct Digital Synthesizer), redundant AF (Tone) DDS, and two serial ports (local and remote). Settings for ID mode, ID code, ID rate, sequence of operation and other parameters are set by an user interface program. Simple controls such as power adjustment, percent modulation, and side transfer are available locally for technical setup. Also for convenience, PA voltage, PA current, PA temperature, RF frequency, Tone frequency, Carrier power and percent modulation are displayed locally via 7-segment readouts. A simple switch disables remote control operation during local technical service.The power portion of each transmitter consists of two independent 25 watts systems. Each system has an output filter, a switching power amplifier and switching modulator / regulator, power supply, and an optional battery supply.The SD25 Dual consists of two independent SD25 transmitters and a Digitally Controlled Automatic Transfer unit housed in a single cabinet designed for outdoor use.Transmitter: Model SD25Qualifications: Meets applicable requirements of ICAO, FCC, FAA, Transport Canada, UK CAA, EC (emissions and safety standards).Frequency Range: 190-1800 kHz, selectable in 500 Hz increments, stability better than .005% (-40(C to +70(C).Power Output: Digitally generated carrier power into 50 ohms continuously adjustable 5 to 25 watts.Spurious Emission: Radiated harmonics (measured at a dummy antenna) are more than 63 dB below the 25-watt carrier.Type of Emission: NON, A2A, A3E (Optional), GID (with optional GPS beacon modulator), or any combination.Modulation: Digital generated typically 400 or 1020 Hz. Noise and Hum Level: More than 40 dB below the carrier level.Input Power: 115/230V (15%, single phase 50-60 Hz. 24 VDC. Efficiency: Better than 70% overall efficiency AC input to RF output at 25-watt carrier and tone keying at 95% modulation.Numeric Digital Display Meters: Power output, reflected power, PA voltage, PA current, percent modulation, audio input level.Keyer: Any combination of Morse code letters or numerals with any user set values pertaining to the length of dots and dashes, the time between them and the number of repetitions of the identification code per minute (character length dependent).Circuit Protection: Open and short circuit proof and immune to damage that can be cause by improper antenna loads. Individual fuses are used to protect the AC and DC circuits and immune to severe damage caused by improper installation. VSWR circuit that shuts down the transmitter if VSWR exceeds an adjustable value. Over temperature and standby shutdown.
SD SERIES TRANSMITTER SECTION 1 3 • • • •••SOUTHERN AVIONICS COMPANYWorking Conditions: Continuous unattended operation in the following environments: ambient temperature, -40(C to +70(C; relative humidity, 0-100%; high salinity as encountered in offshore conditions. IP66. Cooling by heat sinks with no fans.Monitoring: Transmitter shuts down with loss of tone, drop in modulation below an adjustable value, or continuous tone, or when power falls below an adjustable value, or when VSWR rises above an adjustable value or when temperature rises above an adjustable value or in the event of a change in the code, its duration or rate. With a dual system, a shutdown signal initiates a transfer from the primary transmitter to the secondary transmitter.Self-Diagnostics: Computer diagnostic routines that identify malfunctioning modules at LRU level available via local or remote PC. Transmitter and antenna coupler are suitable for installation and operation by untrained personnel.Automatic Transfer UnitLocal Radiobeacon Control Panel (can be operated independently from the RMM or dial up RMM and takes priority over both when used)ANALOG CONTROL FUNCTIONS: TRANSMITTER ON/OFFPRIMARY TRANSMITTER SELECTRESET TO PRIMARYNORMAL/TESTREMOTE PANEL DISABLEDIAL UP CONTROL DISABLEAUDIBLE ALARM ENABLE/DISABLEPOWERANALOG INDICATORS: TRANSMITTER ONPRIMARY TRANSMITTER (TRANSMITTER 1/TRANSMITTER 2)SYSTEM STATUS PRIMARY: Selected PRIMARY transmitter operating SECONDARY: Selected PRIMARY transmitter failed and SECONDARY transmitter operating FAIL: Both transmitters failedAUDIBLE ALARM (Alarms whenever system status is FAIL). REMOTE PANEL DISABLEDDIAL UP CONTROL DISABLEDRemote Radiobeacon Control Panel (Operates independently from the dial up RMM and has priority when used)ANALOG CONTROL FUNCTIONS: TRANSMITTER ON/OFFPRIMARY TRANSMITTER SELECTRESET TO PRIMARYAUDIBLE ALARM ENABLE/DISABLEPOWERANALOG INDICATORS: TRANSMITTER ONAC POWER present (at transmitter site), PRIMARY TRANSMITTER (TRANSMITTER 1/TRANSMITTER 2) SYSTEM STATUS
SD SERIES TRANSMITTER4 • • • •••SOUTHERN AVIONICS COMPANY PRIMARY: Selected PRIMARY transmitter operating SECONDARY: Selected PRIMARY transmitter failed and SECONDARY transmitter operating FAIL: Both transmitters failedAUDIBLE ALARM (Alarms whenever system status is FAIL). DIAL UP CONTROL DISABLED POWER: 115/230 VAC ±20% 50/60 Hz 5VA.CIRCUIT PROTECTION: AC line fuse. Control link is transformer isolated by signal transformer meeting MIL-T-27D specifications and 1000 V RMS insulation test voltage. Logic line inputs are isolated by series impedances and diode clamps.WORKING CONDITIONS: Continuous unattended operation in the following environment: ambient temperature -50°C to 70°C, relative humidity 0 to 100% without condensing moisture.INSTALLATION REQUIREMENTS: The REMOTE RADIOBEACON CONTROL PANEL is designed for indoor mounting in a standard 19-inch cabinet. Panel height is 7 inches; required panel depth is 5 inches.
SD SERIES TRANSMITTER SECTION 1 5 • • • •••SOUTHERN AVIONICS COMPANYGeneral Description: SD50This non-directional beacon is an Amplitude Modulated transmitter with an adjustable output power from 5 to 50 watts. The transmitter uses switching technology in the power amplifiers and modulator / regulator modules resulting in a highly efficient system, in a small package.The exciter portion consists of an embedded 32-bit micro controller, an I/O interface circuit, an A/D converter, a monitor circuitry, and an optional voice processing circuitry in a single 3U enclosure. The controller has one "stored" non-volatile memory, redundant RF DDS (Direct Digital Synthesizer), redundant AF (Tone) DDS, and two serial ports (local and remote). Settings for ID mode, ID code, ID rate, sequence of operation and other parameters are set by an user interface program. Simple controls such as power adjustment, percent modulation, and side transfer are available locally for technical setup. Also for convenience, PA voltage, PA current, PA temperature, RF frequency, Tone frequency, Carrier power and percent modulation are displayed locally via 7-segment readouts. A simple switch disables remote control operation during local technical service.The power portion of each transmitter consists of two independent 50 watts systems. Each system has an output filter, a switching power amplifier and switching modulator / regulator, power supply, and an optional battery supply.The SD50 Dual consists of two independent SD50 transmitters and a Digitally Controlled Automatic Transfer unit housed in a single cabinet designed for outdoor use.Transmitter: Model SD50Qualifications: Meets applicable requirements of ICAO, FCC, FAA, Transport Canada, UK CAA, EC (emissions and safety standards).Frequency Range: 190-1800 kHz, selectable in 500 Hz increments, stability better than .005% (-40(C to +70(C).Power Output: Digitally generated carrier power into 50 ohms continuously adjustable 5 to 25 watts.Spurious Emission: Radiated harmonics (measured at a dummy antenna) are more than 63 dB below the 50-watt carrier.Type of Emission: NON, A2A, A3E (Optional), GID (with optional GPS beacon modulator), or any combination.Modulation: Digital generated typically 400 or 1020 Hz. Noise and Hum Level: More than 40 dB below the carrier level.Input Power: 115/230V (15%, single phase 50-60 Hz. 24 VDC. Efficiency: Better than 70% overall efficiency AC input to RF output at 50-watt carrier and tone keying at 95% modulation.Numeric Digital Display Meters: Power output, reflected power, PA voltage, PA current, percent modulation, audio input level.Keyer: Any combination of Morse code letters or numerals with any user set values pertaining to the length of dots and dashes, the time between them and the number of repetitions of the identification code per minute (character length dependent).Circuit Protection: Open and short circuit proof and immune to damage that can be cause by improper antenna loads. Individual fuses are used to protect the AC and DC circuits and immune to severe damage caused by improper installation. VSWR circuit that shuts down the transmitter if VSWR exceeds an adjustable value. Over temperature and standby shutdown.Working Conditions: Continuous unattended operation in the following environments: ambient temperature, -40(C to +70(C; relative humidity, 0-100%; high salinity as encountered in offshore conditions. IP66. Cooling by heat sinks with no fans.
SD SERIES TRANSMITTER6 • • • •••SOUTHERN AVIONICS COMPANYMonitoring: Transmitter shuts down with loss of tone, drop in modulation below an adjustable value, or continuous tone, or when power falls below an adjustable value, or when VSWR rises above an adjustable value or when temperature rises above an adjustable value or in the event of a change in the code, its duration or rate. With a dual system, a shutdown signal initiates a transfer from the primary transmitter to the secondary transmitter.Self-Diagnostics: Computer diagnostic routines that identify malfunctioning modules at LRU level available via local or remote PC. Transmitter and antenna coupler are suitable for installation and operation by untrained personnel.Automatic Transfer UnitLocal Radiobeacon Control Panel (can be operated independently from the RMM or dial up RMM and takes priority over both when used)ANALOG CONTROL FUNCTIONS: TRANSMITTER ON/OFFPRIMARY TRANSMITTER SELECTRESET TO PRIMARYNORMAL/TESTREMOTE PANEL DISABLEDIAL UP CONTROL DISABLEAUDIBLE ALARM ENABLE/DISABLEPOWERANALOG INDICATORS: TRANSMITTER ONPRIMARY TRANSMITTER (TRANSMITTER 1/TRANSMITTER 2)SYSTEM STATUS PRIMARY: Selected PRIMARY transmitter operating SECONDARY: Selected PRIMARY transmitter failed and SECONDARY transmitter operating FAIL: Both transmitters failedAUDIBLE ALARM (Alarms whenever system status is FAIL). REMOTE PANEL DISABLEDDIAL UP CONTROL DISABLEDRemote Radiobeacon Control Panel (Operates independently from the dial up RMM and has priority when used)ANALOG CONTROL FUNCTIONS: TRANSMITTER ON/OFFPRIMARY TRANSMITTER SELECTRESET TO PRIMARYAUDIBLE ALARM ENABLE/DISABLEPOWERANALOG INDICATORS: TRANSMITTER ONAC POWER present (at transmitter site), PRIMARY TRANSMITTER (TRANSMITTER 1/TRANSMITTER 2) SYSTEM STATUS PRIMARY: Selected PRIMARY transmitter operating SECONDARY: Selected PRIMARY transmitter failed and SECONDARY transmitter operating FAIL: Both transmitters failed
SD SERIES TRANSMITTER SECTION 1 7 • • • •••SOUTHERN AVIONICS COMPANYAUDIBLE ALARM (Alarms whenever system status is FAIL). DIAL UP CONTROL DISABLED POWER: 115/230 VAC ±20% 50/60 Hz 5VA.CIRCUIT PROTECTION: AC line fuse. Control link is transformer isolated by signal transformer meeting MIL-T-27D specifications and 1000 V RMS insulation test voltage. Logic line inputs are isolated by series impedances and diode clamps.WORKING CONDITIONS: Continuous unattended operation in the following environment: ambient temperature -50°C to 70°C, relative humidity 0 to 100% without condensing moisture.INSTALLATION REQUIREMENTS: The REMOTE RADIOBEACON CONTROL PANEL is designed for indoor mounting in a standard 19-inch cabinet. Panel height is 7 inches; required panel depth is 5 inches.
SD SERIES TRANSMITTER8 • • • •••SOUTHERN AVIONICS COMPANYGeneral Description: SD100This non-directional beacon is an Amplitude Modulated transmitter with an adjustable output power from 5 to 100 watts. The transmitter uses switching technology in the power amplifiers and modulator / regulator modules resulting in a highly efficient system, in a small package.The exciter portion consists of an embedded 32-bit micro controller, an I/O interface circuit, an A/D converter, a monitor circuitry, and an optional voice processing circuitry in a single 3U enclosure. The controller has one "stored" non-volatile memory, redundant RF DDS (Direct Digital Synthesizer), redundant AF (Tone) DDS, and two serial ports (local and remote). Settings for ID mode, ID code, ID rate, sequence of operation and other parameters are set by an user interface program. Simple controls such as power adjustment, percent modulation, and side transfer are available locally for technical setup. Also for convenience, PA voltage, PA current, PA temperature, RF frequency, Tone frequency, Carrier power and percent modulation are displayed locally via 7-segment readouts. A simple switch disables remote control operation during local technical service.The power portion of each transmitter consists of two independent 100 watts systems. Each system has an output filter, a switching power amplifier and switching modulator / regulator, power supply, and an optional battery supply.The SD100 Dual consists of two independent SD100 transmitters and a Digitally Controlled Automatic Transfer unit housed in a single cabinet designed for outdoor use.Transmitter: Model SD100Qualifications: Meets applicable requirements of ICAO, FCC, FAA, Transport Canada, UK CAA, EC (emissions and safety standards).Frequency Range: 190-1800 kHz, selectable in 500 Hz increments, stability better than .005% (-40(C to +70(C).Power Output: Digitally generated carrier power into 50 ohms continuously adjustable 5 to 100 watts.Spurious Emission: Radiated harmonics (measured at a dummy antenna) are more than 63 dB below the 100-watt carrier.Type of Emission: NON, A2A, A3E (Optional), GID (with optional GPS beacon modulator), or any combination.Modulation: Digital generated typically 400 or 1020 Hz. Noise and Hum Level: More than 40 dB below the carrier level.Input Power: 115/230V (15%, single phase 50-60 Hz. 24 VDC. Efficiency: Better than 70% overall efficiency AC input to RF output at 100-watt carrier and tone keying at 95% modulation.Numeric Digital Display Meters: Power output, reflected power, PA voltage, PA current, percent modulation, audio input level.Keyer: Any combination of Morse code letters or numerals with any user set values pertaining to the length of dots and dashes, the time between them and the number of repetitions of the identification code per minute (character length dependent).Circuit Protection: Open and short circuit proof and immune to damage that can be cause by improper antenna loads. Individual fuses are used to protect the AC and DC circuits and immune to severe damage caused by improper installation. VSWR circuit that shuts down the transmitter if VSWR exceeds an adjustable value. Over temperature and standby shutdown.Working Conditions: Continuous unattended operation in the following environments: ambient temperature, -40(C to +70(C; relative humidity, 0-100%; high salinity as encountered in offshore conditions. IP66. Cooling by heat sinks with no fans.
SD SERIES TRANSMITTER SECTION 1 9 • • • •••SOUTHERN AVIONICS COMPANYMonitoring: Transmitter shuts down with loss of tone, drop in modulation below an adjustable value, or continuous tone, or when power falls below an adjustable value, or when VSWR rises above an adjustable value or when temperature rises above an adjustable value or in the event of a change in the code, its duration or rate. With a dual system, a shutdown signal initiates a transfer from the primary transmitter to the secondary transmitter.Self-Diagnostics: Computer diagnostic routines that identify malfunctioning modules at LRU level available via local or remote PC. Transmitter and antenna coupler are suitable for installation and operation by untrained personnel.Automatic Transfer UnitLocal Radiobeacon Control Panel (can be operated independently from the RMM or dial up RMM and takes priority over both when used)ANALOG CONTROL FUNCTIONS: TRANSMITTER ON/OFFPRIMARY TRANSMITTER SELECTRESET TO PRIMARYNORMAL/TESTREMOTE PANEL DISABLEDIAL UP CONTROL DISABLEAUDIBLE ALARM ENABLE/DISABLEPOWERANALOG INDICATORS: TRANSMITTER ONPRIMARY TRANSMITTER (TRANSMITTER 1/TRANSMITTER 2)SYSTEM STATUS PRIMARY: Selected PRIMARY transmitter operating SECONDARY: Selected PRIMARY transmitter failed and SECONDARY transmitter operating FAIL: Both transmitters failedAUDIBLE ALARM (Alarms whenever system status is FAIL). REMOTE PANEL DISABLEDDIAL UP CONTROL DISABLEDRemote Radiobeacon Control Panel (Operates independently from the dial up RMM and has priority when used)ANALOG CONTROL FUNCTIONS: TRANSMITTER ON/OFFPRIMARY TRANSMITTER SELECTRESET TO PRIMARYAUDIBLE ALARM ENABLE/DISABLEPOWERANALOG INDICATORS: TRANSMITTER ONAC POWER present (at transmitter site), PRIMARY TRANSMITTER (TRANSMITTER 1/TRANSMITTER 2) SYSTEM STATUS PRIMARY: Selected PRIMARY transmitter operating SECONDARY: Selected PRIMARY transmitter failed and SECONDARY transmitter operating FAIL: Both transmitters failed
SD SERIES TRANSMITTER10 • • • •••SOUTHERN AVIONICS COMPANYAUDIBLE ALARM (Alarms whenever system status is FAIL). DIAL UP CONTROL DISABLED POWER: 115/230 VAC ±20% 50/60 Hz 5VA.CIRCUIT PROTECTION: AC line fuse. Control link is transformer isolated by signal transformer meeting MIL-T-27D specifications and 1000 V RMS insulation test voltage. Logic line inputs are isolated by series impedances and diode clamps.WORKING CONDITIONS: Continuous unattended operation in the following environment: ambient temperature -50°C to 70°C, relative humidity 0 to 100% without condensing moisture.INSTALLATION REQUIREMENTS: The REMOTE RADIOBEACON CONTROL PANEL is designed for indoor mounting in a standard 19-inch cabinet. Panel height is 7 inches; required panel depth is 5 inches.
SD SERIES TRANSMITTER SECTION 1 11 • • • •••SOUTHERN AVIONICS COMPANYSDE10018 - DUAL TRANSMITTER PORTRAIT
SD SERIES TRANSMITTER12 • • • •••SOUTHERN AVIONICS COMPANYSDE10018 - DUAL TRANSMITTER PORTRAIT WITH LOCAL CONTROL PANEL
SD SERIES TRANSMITTER SECTION 1 13 • • • •••SOUTHERN AVIONICS COMPANYSDE10018 - TRANSMITTER ENCLOSURE DIMENSIONS
SD SERIES TRANSMITTER14 • • • •••SOUTHERN AVIONICS COMPANYThis page is intentionally left blank.
SD SERIES TRANSMITTER 15 • • • •••SOUTHERN AVIONICS COMPANY SECTION 22 THEORY OF OPERATION, SD SERIES UNIT2.1 Functional Description: SD Series TransmitterGeneral Theory of OperationBriefly, the SDxx system takes advantage of the powerful Motorola ColdFire(r) microprocessor. It is located on the Controller / Monitor PCB and is the heart of the system, generally controling all system operation either directly or in conjunction with an Analog and Digital I/O multiplexing interface. The following are all controlled by the embedded firmware, Direct Digital Synthesis (DDS) of RF frequency and AF tone frequency , Identifier Morse code dot, dash and space intervals., Customer IDENT sequence, the standard alarms, any additional Fault handling based on multipoint voltage, current and temperature monitoring , transfer criteria (Dual Only), power limiting and modulation limiting.RS 232,RS422 and RS485 protocols are supported. A US Robotics Modem is furnished for using phone lines. The RF section consists of the RF PA Power Supply, The RF PA Amplifier, The Filter /Bridge, and the Mother Board which interconnects them all. This section is interconnected with the Controller/Monitor which Dictates the Frequency of operation, power output, and modulation percentage. Operational information is also passed. A more detailed breakdown as to functionality follows on a board by board basis. SLP10007 - Controller / MonitorThe CONTROLLER/ MONITOR employs the new Motorola MCF5206 COLDFIRE(r) microprocessor. It encompasses the following sections:COLDFIRE Processor - 32-bitADC - 8-Channel 12-bitDAC - 8-Channel 8-bitDDS - Radio Frequency (190K to 1800KHz)DDS - Tone Frequency (400 / 1020 Hz)Flash Memory - 4MbDRAM - 16MbProgrammable LogicDigital I/O (Read/Write)UARTWatch Timer and NV-RAMCOLDFIRE Processor section:The LOGIC program creates 16MHz from 32MHz for the clock frequency of the microprocessor. The processor controls several peripheral functions such as memory, task timers, I/O bus lines, and RS-232 ports. For the dual system, the primary Controller / Monitor and secondary Controller / Monitor may talk to each other through Controller / Monitor Motherboard (SLP10012) by using 2 COM-PORT lines (ex: RXD & TXD). Each Controller / Monitor has one interrupt line for paying attention what other Controller / Monitor has something is important, then Controller / Monitor sets "RS-232" MUX to be enabled.Analog-to-Digital converter (ADC) section:The Controller / Monitor Controller PCB has two (AD7891) 12-bit ADC chips, so there are 16 analog inputs. The channel selection of input range is 0 to +5 V.
SD SERIES TRANSMITTER16 • • • •••SOUTHERN AVIONICS COMPANYDigital-to-Analog Converter (DAC) section:The 8-bit DAC provides eight digitally controlled dc voltage outputs. The limited of output range is 0 to +5 V. The user may adjust dc analog level or turn on/off likely digital level. RF Direct Digital Synthesizer (DDS) section:The 50MHz clock input is for the RF DDS. The RF DDS provides two different signal-waves (square wave and sine wave). The square wave level is 0 to +5.0 V (recommended) and the sine wave level is 0 to 1.0 V. The DDS has 8 data digitally inputs. The code may store 4 data bytes for the 32-bit RF DDS tuning word. RF is enabled by writing the desired frequency to the DDS, and disabled by writing a zero frequency to the DDS. The RF DDS goes the signal through EMI filter to generate a low jitter square wave output.Tone Frequency Direct Digital Synthesizer section:The 50MHz clock input is also used by the AF DDS. The AF DDS signal is sine wave only. The user may adjust AF amplitude modulation. Two methods for keying the tone are available. The first is like the RF DDS - load a frequency into the registers of the DDS chip. The second is simply "keying" (digital ON/OFF) of a reserved I/O signal. The settings for ID mode, ID code, ID rate, sequence of operation and other parameters are set by a user interface program.Flash Memory section:Its 4Mb of memory is organized as 512K x 8. The firmware for the E(E)PROM is written in assembly / C code. It may move data to DRAM and NV-RAM memory when the power is up. It is simple to replace when the code is updated.DRAM section:The PCB has two DRAM devices. It totals 1Mb x 16 x 2 (32-bit data). During initialization the EPROM moves data to the DRAM.Programmable LOGIC (LATTICE device) section:There are two LATTICE chips on the PCB. The Programmable Logic provides several necessary functions such as control lines, 1Hz, 16MHz, enabled / disabled lines and interrupt lines.Digital I/O section:There are 32 digital inputs or outputs and 4 control lines for writing. Each control has 8 data lines organized as one byte each. They are used for the status fault, frequency reading, reset, and control data. Universal Synchronous/Asynchronous Receiver/Transmitters (UART) section:The Controller / Monitor processor has two UARTs. They are used for RS-232 only. SAC offers four possible transmitter configurations as follows:Single TX without a LOCAL CONTROL panel:The Controller / Monitor serial port 1 is probably used for PC.The Controller / Monitor serial port 2 is used for PC / Modem through Controller / Monitor Motherboard (Controller / Monitor MB - SLP10012).Single TX with a LOCAL CONTROL panel:The Controller / Monitor serial port 1 is used for the local operating panel.The Controller / Monitor serial port 2 is used for PC / Modem through Controller / Monitor MB.Dual TX without a LOCAL CONTROL panel:Either Controller / Monitor1 or Controller / Monitor2 serial port 1 is probably used for PC.The serial port 2 is used for PC / Modem through Controller / Monitor MB.Dual TX with a LOCAL CONTROL panel:
SD SERIES TRANSMITTER 17 • • • •••SOUTHERN AVIONICS COMPANY SECTION 2Either Controller / Monitor1 or Controller / Monitor2 serial port 1 is used for local operating panel.The serial port 2 is used for PC / Modem through Controller / Monitor MB. Watch Timer and NV-RAM section:The NV-RAM provides 32Kb of memory available to the user. The NV-RAM can hold data more than 10 years in the absence of power. It allows the operator to store various settings in NV memory. When the power is up, Controller / Monitor can follow the user settings in NV memory. The Watchdog timer restarts an out of control Controller / Monitor processor. The code may use the real-time clock for 255 task timers (background).SLP10009 Digital I/O and PWM Theory The Digital I/O and PWM PCB consists of several sub sections which accomplish the following functions:Digital Input State Reading Digital Output ControlFrequency Counting Audio to PWM ConversionAWOS Option.The Digital Input Section receives and conditions state information from the various system modules mainly indicating the fault status of these sections but also monitoring the state of other sensors. While retaining their unique state value all of these signals are combined into one interrupt request (IRQ) line for rapid servicing of external events. A local red fault LED indicates the arrival of a fault condition. The processor take action depending on the nature of the condition.The Digital Output Section conditions and outputs a state condition to the various system modules primarily to perform fault resets. Antenna switching is also controlled by this section.The Frequency Counter section conditions and samples the Direct Digital Synthesizer generated frequency from the RF power amplifier. This data is relayed to the processor which monitors the output RF frequency for accuracy.The PWM section of this board inputs audio signals from the tone generating Direct Digital Synthesizer and from an optional voice input piggybacked PCB for AWOS functionality. The composite audio signal is summed with an adjustable DC level and converted into a 75 kHz Pulse Width Modulated signal with its basic no-audio duty cycle being set at a fixed percentage. This fixed level facilitates modulation tracking irregardless of power level output. A back-up modulation limiting circuit prevents over-modulation from damaging the RF Amplifier but main over modulation protection control for Tone signals is a software function of the processor which monitors modulation at all times. The Optional AWOS plug in PCB Contains an AGC section which prevents over-modulation by the USER audio signal. There is also a built in active Audio band-pass filter which eliminates signals outside of the 300 to 3000Hz pass band. Signals generated on this Optional PCB also alert the processor which then cuts the main tone level and temporarily ceases issuing any modulation alarms based on modulation percentage.SLP10020 OPTIONAL AUDIO PCB (AWOS)
SD SERIES TRANSMITTER18 • • • •••SOUTHERN AVIONICS COMPANYThe Audio PCB is an OPTIONAL addition to the normal system which allows the user to broadcast AWOS announcements. The Option is implemented as a plug in piggyback board to the Digital I/O PCB and consists of four sections as follows:Voice AmplifierAutomatic Gain ControlChebychev Passband Filter Voice DetectorThe Voice amplifier takes the nominal -17dBm signal level and boost it to a level useable by the AGC sectionIt is common mode balanced and its Gain is adjustable.The AGC circuit is responsible for modulation limiting. It is adjusted to "capture" the level at -17dBm and output a constant modulation level to the Digital I/O PWM section up to levels exceeding +10 dBm. This section prevents inadvertent over modulation of the voice signal, and is necessary since the Controller / Monitor has no control over user input. The Chebychev Passband filter is designed for 300 to 3000 Hz. The output at 4000 Hz is down more than 45 dB ensuring any out of band audio signals from the USER will not cause adjacent channel interference.The Voice Detector has two functions. It detects the presence of an announcement sequence and automatically attenuates the Keying tone level down to 20% modulation. The announcement level is summed with the Keying tone level and set to achieve 95% composite modulation. This action prevents over modulation and allows the announcement to be heard over the beacon Morse code IDENT tones. It also signals the Controller /Monitor which in turn temporarily suspends Modulation Alarms since the IDENT tone level is dropped below the alarm threshold.SLP10005 Analog I/O The Analog I/O and PWM PCB consists of several sub sections which accomplish the following functions:Analog Signal Input Analog Signal Output Modulation DetectionThe Analog Input Section is essentially a 40 channel low pass filtered analog MUX. These multiplexed inputs are actually an expansion scheme which adds additional analog inputs to those already available to the controller/ monitor. This allows the overall system to be expanded to control larger multi-section transmitters up to 1KW at present.Signals such as RF Power Amplifier voltage, current and temperature, to name only a few, are sampled and read in to the Controller / Monitor via this MUX. The multiplexing process is directly controlled by the Controller Monitor.The Analog Signal Output Section is a smaller MUX facilitating output control expansion. As an example, an analog control signal originating in the Controller / Monitor such as PWR_LEVEL ( a 0.0 to 4.0 volt DC level) is
SD SERIES TRANSMITTER 19 • • • •••SOUTHERN AVIONICS COMPANY SECTION 2sent to this Sample and Hold MUX channel 1. Via this channel the MUX outputs this particular level to the PA Power Supply which dictates the output power level of the transmitter. The Next Channel of the MUX can control yet another module requiring some level of control voltage if needed. The Modulation Detector receives a detected sample of the RF envelope form the bridge circuit and converts it into two DC levels called Vmax and Vgref. The Controller / Monitor reads in these levels and subtracts Vgref from Vmax to derive Vmin. Vmax and Vmin are then used in the standard modulation formula to obtain modulation percentage in the same way as someone would calculate it manually using an oscilloscope. This circuit is intended to free the Controller / Monitor from having to sample large amounts of envelope data to statistically calculate the percentage thereby facilitating more of a real-time monitoring of modulation. Correction curves are embedded to resolve linearity issues arising from the detection process.SLP10017 Low Voltage Power Supply The LVPS Furnishes +5, +12, and -12VDC to the Controller/ Monitor Mother Board and itself plugs into the mother PCB. It is transformer driven to allow for 115/230VAC operation. 48VDC operation allows running off of emergency battery. The LVPS also passes 50VDC or 48V BATTERY to the user section to power miscellaneous circuitry.SLP10003 PA Power Supply TheoryThe PA Power Supply (PAPS) The PA Power Supply consists of three sub-sections, namely, the Inrush Current section , the DC Controller, and the DC-DC Converter. Included with these are associated signal sense and fault circuitry. Taking them one at a time in the general structure of their usage follows.1.) The Inrush Current Section:After receiving the HV-ON signal from the Controller / Monitor, this section switches on HV-DC and controls the charge rate of the HV DC supply capacitors to avoid damagingly high inrush currents. It does this by limiting the charge current and monitoring the voltage build-up on the large capacitor bank until it reaches an acceptable charge level, after which unlimited current is applied. The Raw HV is sampled and fed back to the Controller / Monitor. 2.) The DC ControllerThis section is a buck regulator with feedback control to reduce the Raw HV DC down to level usable by the RF Power Amplifier section. Under Controller / Monitor control, the output of this section can be varied, which in turn will vary the power output of the RF Power Amplifier. The feedback allows the DC Controller to respond to the peak power demands of the PA greatly reducing or eliminating carrier droop. This section Also isolates the PA from input power fluctuations and or "brown-outs", and maintains a steady power output over widely varying conditions. Since the DC Controller controls the RF power output and the PA sections modulator can run a constant carrier level duty cycle, power can be changed with out resetting the modulation percentage. The DC Controllers Voltage and Current output is sampled and fed back to the Controller / Monitor for monitoring. Fault conditions for current and voltage will automatically shut down the section and report to the Controller / Monitor which can attempt to bring the unit back on line if the problem was transitory or perhaps switch transmitters if the system is a dual configuration.
SD SERIES TRANSMITTER20 • • • •••SOUTHERN AVIONICS COMPANY3.) The DC-DC ConverterThe converter will take an optional 48VDC battery back-up source and produce HV which is combined with the normal AC HVDC to provide a seamless transition from AC to DC operation in the event of a Brownout or AC power failure. It is purposely set lower than the nominal AC HVDC to allow for simple diode combining and to preserve battery life while outputting a legal signal. It is NOT regulated but rather will slowly output less HV as the batteries drain. If regulated it would draw more and more current as the batteries became weaker. Since the system is computer controlled decisions can be made to stay on the air at reduced power levels in emergency situations allowing battery conservation . The Converter is a basic Chopped DC-DC converter with over-current sensing and local fault shutdown latches. The fault condition is also reported to the Controller / Monitor. A Reset of all latched fault logic states can be is performed by the Controller / Monitor as necessary. A dual low voltage +12VDC supply 12VA and 12VB is fed by +50VDC derived from the AC line or 48VDC supplied by the battery backup ensuring continuous operation of the low level stages after the initial power on. The separated 12V feeds ensures minimal cross-talk between the DC-DC Controller and the DC Controller. As an aside the 50VDC supply (located elsewhere depending on the system) is also monitored by the Controller / Monitor along with 48VDC Battery current and voltage for diagnostic information. SLP10001 RF Power AmplifierThe RF Power Amplifier PCB is a Pulse Width Modulator and RF power amplifier in one package. The Pulse width Modulator section is commonly called the Modulator and the RF Power Amplifier is commonly called the PA. These terms will be used for the rest of this discussion.The PA section is comprised of a broadband pre-amplifier and Class "D" RF power amplifier. It inputs either the Controller / Monitor controlled Direct Digital Synthesized RF drive signal or a customer furnished signal. Its output power is controlled by the Modulator.The Modulator is basically a 75 kHz buck converter. It inputs D.C. High Voltage from the PA Power supply Section and uses a 75 kHz square-wave input from the Controller / Monitor-I/O section to chop, filter and reduce the DC-HV to a level usable by the PA. The Voltage the Modulator outputs to the PA is a function of both the input HV and the duty cycle of the 75 Khz square-wave. The 75 kHz Duty cycle of is set to 45% and not used to change the overall RF Power output level. The power output level of the PA is set by changing the input DC-HV and this is done under Controller / Monitor control. To Modulate the PA, audio frequency information in the form of a Morse Code Station ID tone sequence or an AWOS voice announcement, pulse width modulates the 75 kHz signal controlling the Modulator section thus varying its output voltage at the audio rate. This varies the instantaneous voltage applied to the PA, modulating its output Power. Critical parameters such as PA Voltage , Current , and Temperature are sensed and monitored continuously by the Controller / Monitor. Local (on board automatic) over-current protection is built in. The protection scheme also provides interrupt driven fault reporting to the Controller / Monitor.SLP10002 Filter/Bridge PCB TheoryThe Filter/Bridge includes a broadband toroidal impedance transformer, a seven pole Butterworth low pass filter, a broadband RF power bridge, modulation envelope detector and associated level sampling and fault latching circuitry.The Impedance transformer receives as input the RF Power Amplifiers Class D output and impedance matches it to the 50Ohm Butterworth Low Pass Filter, which is configured for optimum characteristics via simple jumpers for the frequency band in use. The sinusoidal 50Ohm output of the Filter is Fed then fed through the RF power bridge which reports readings of Forward and Reflected RF Power to the Controller / Monitor. The Controller / Monitor then normalizes and calibrates the power curve and calculates SWR. Fault latches are also set up to report High reflected
SD SERIES TRANSMITTER 21 • • • •••SOUTHERN AVIONICS COMPANY SECTION 2power or RF over-current conditions for immediate action via a fault interrupt structure. A sample of the final RF output envelope is detected and sent back to the Controller / Monitor where other circuitry derives Vmax/Vmin information for modulation percentage calculation via Controller / Monitor firmware. SLP10016 - OPTIONAL Local / Remote ControlThe Optional Local Control can be used as either a local or remote operating panel. The Local Control is a microprocessor-based (Motorola M68HC11) unit offering partial control over the controller / monitor and thereby the system. It offers similar functionality to a standard front panel on older equipment.Pushbuttons allow the user to select and or control the following:Primary Transmitter Select (1 or 2)Mode Select (ID, CONT or CARR)Transmitter Displayed (1 or 2)And view readings of: readings for:PA VoltagePA CurrentPA TemperatureForward PowerReflected PowerModulation%Audio Frequency (tone)RF FrequencyThe user can adjust or set the: Modulation Percentage RF Power output level RF ON/OFF Enable/Disable AlarmsSelect Local/Remote Control When one of any pushbuttons is pressed except RESET, the 6811 processor sends a data command to the Controller / Monitor through the serial communication port.RESET forces Local Panel re-initialization.The 7 segment led display update comes from the Controller / Monitor The displays provide the 3 following groups for reading:RF Power:Up to 4 digits display the Modulation%, forward power and reflected power.Power Amplifier (P.A.):Up to 3 digits Display the voltage, current and temperature.Frequency:Up to 5 digits display the tone frequency (set) and RF frequency (measured).The LED indicators simply display the system status. The Local Control receives a command string from the Controller / Monitor and uses this to set the status indicators.
SD SERIES TRANSMITTER22 • • • •••SOUTHERN AVIONICS COMPANYThe complex logic needed to for pushbutton control and display is accomplished using programmable gate-array logic.The Local Control provides two serial communication ports (RS-232 / RS-485). The RS-232 port is used locally for the Controller / Monitor serial port 1. The RS-485 port is connected remotely to the Controller / Monitor port 1.
SD SERIES TRANSMITTER 23 • • • •••SOUTHERN AVIONICS COMPANY SECTION 2SDB10001 - SD SERIES SINGLE TRANSMITTER BLOCK DIAGRAM
SD SERIES TRANSMITTER24 • • • •••SOUTHERN AVIONICS COMPANYSDB10002 - SD SERIES DUAL TRANSMITTER BLOCK DIAGRAM
SD SERIES TRANSMITTER 25 • • • •••SOUTHERN AVIONICS COMPANY SECTION 2SDF31002 - SD SERIES BASIC DUAL TRANSMITTER DIAGRAM PAGE 1 OF 2
SD SERIES TRANSMITTER26 • • • •••SOUTHERN AVIONICS COMPANYSDF31002 - SD SERIES BASIC DUAL TRANSMITTER DIAGRAM - CONTINUEDPAGE 2 OF 2
SD SERIES TRANSMITTER 27 • • • •••Southern Avionics Company SECTION 2SDE10034 - SINGLE CONTROL DIAGRAM
SD SERIES TRANSMITTER28 • • • •••Southern Avionics CompanySDE10032 - DUAL CONTROL 3U DIAGRAM
SD SERIES TRANSMITTER 29 • • • •••Southern Avionics Company SECTION 2SDE10033 - DUAL TRANSMITTER CONTROL 6U DIAGRAM
SD SERIES TRANSMITTER30 • • • •••Southern Avionics Company2.2 SLF31002/00 - Basic Dual Transmitter2.2.1 P.A. PCBSLP10001 RF Power AmplifierThe RF Power Amplifier PCB is a Pulse Width Modulator and RF power amplifier in one package. The Pulse width Modulator section is commonly called the Modulator and the RF Power Amplifier is commonly called the PA. These terms will be used for the rest of this discussion.The PA section is comprised of a broadband pre-amplifier and Class "D" RF power amplifier. It inputs either the Controller / Monitor controlled Direct Digital Synthesized RF drive signal or a customer furnished signal. Its output power is controlled by the Modulator.The Modulator is basically a 75 kHz buck converter. It inputs D.C. High Voltage from the PA Power supply Section and uses a 75 kHz square-wave input from the Controller / Monitor-I/O section to chop, filter and reduce the DC-HV to a level usable by the PA. The Voltage the Modulator outputs to the PA is a function of both the input HV and the duty cycle of the 75 Khz square-wave. The 75 kHz Duty cycle of is set to 45% and not used to change the overall RF Power output level. The power output level of the PA is set by changing the input DC-HV and this is done under Controller / Monitor control. To Modulate the PA, audio frequency information in the form of a Morse Code Station ID tone sequence or an AWOS voice announcement, pulse width modulates the 75 kHz signal controlling the Modulator section thus varying its output voltage at the audio rate. This varies the instantaneous voltage applied to the PA, modulating its output Power. Critical parameters such as PA Voltage , Current , and Temperature are sensed and monitored continuously by the Controller / Monitor. Local (on board automatic) over-current protection is built in. The protection scheme also provides interrupt driven fault reporting to the Controller / Monitor.
SD SERIES TRANSMITTER 31 • • • •••SOUTHERN AVIONICS COMPANY SECTION 2SLP10001 - Assemlby, PCB, RF Power Amplifier REFERENCE COMPONENT DESCRIPTION DESIGNATOR01 SRP10001 PCB, POWER AMPLIFIER \ DMODC01 1C263050 CAP, 3.3M, 250V, METALLIZED FILMC02 1C551010 CAP, CERAMIC, .1MFD. 50V, 10%C03 1C551010 CAP, CERAMIC, .1MFD. 50V, 10%C04 1C854750 CAP, .47 UF, 250V METAL POLYC05 1C254750 CAP, .47M, 250V, MFC06 1C253371 CAP, .33M 400V METALLIZED FILMC07 1C254710 CAP, .47M 50V METAL FILMC08 1C254710 CAP, .47M 50V METAL FILMC09 1C851050 CAP, .1M, 250V, POLYESTER FILMC10 1C851250 CAP, .12M, 250V, POLYESTER FILMC11 1C551010 CAP, CERAMIC, .1MFD. 50V, 10%C12 1C073310 CAP, 33M 50V ELCTLT C14 1C851250 CAP, .12M, 250V, POLYESTER FILMC15 1C073310 CAP, 33M 50V ELCTLT C16 1C551010 CAP, CERAMIC, .1MFD. 50V, 10%C17 1C073310 CAP, 33M 50V ELCTLT C18 1C073310 CAP, 33M 50V ELCTLT C19 1C561010 CAP, CERAMIC, 1MFD 50V 10%C21 1C671000 CAP, 10 MFD, 35V, ALUMINUM ELECTROLYTICC22 1C551010 CAP, CERAMIC, .1MFD. 50V, 10%C23 1C671000 CAP, 10 MFD, 35V, ALUMINUM ELECTROLYTICC24 1C681800 CAP, 180 MFD, 35V ALUMINUM ELECTROLYTICC25 1C551010 CAP, CERAMIC, .1MFD. 50V, 10%C27 1C551010 CAP, CERAMIC, .1MFD. 50V, 10%C28 1C551010 CAP, CERAMIC, .1MFD. 50V, 10%C29 1C541010 CAP, CERAMIC, .01 MFD, 50V, 10%C30 1C551010 CAP, CERAMIC, .1MFD. 50V, 10%C31 1C561010 CAP, CERAMIC, 1MFD 50V 10%C32 1C261020 CAP, 1M 63V FLMC33 1C551010 CAP, CERAMIC, .1MFD. 50V, 10%C34 1C621040 CAP, 100MF, 100V ALUMINUM ELECTROYLTICC35 1C631000 CAP, 1000MF, 25V ALUMINUM ELECTRYLTIC, RADIALC36 1C551010 CAP, CERAMIC, .1MFD. 50V, 10%CR1 1D440000 DIODE, ULTRAFAST RECOV RCT, 600V,4ACR2 1D440000 DIODE, ULTRAFAST RECOV RCT, 600V,4ACR3 1D440000 DIODE, ULTRAFAST RECOV RCT, 600V,4ACR4 1D508228 DIODE, SCHOTTKY BARRIERCR5 1D440000 DIODE, ULTRAFAST RECOV RCT, 600V,4ACR6 1D440000 DIODE, ULTRAFAST RECOV RCT, 600V,4ACR7 1D620000 DIODE, TVS, 20V, BIDIRECTIONALCR8 1D440000 DIODE, ULTRAFAST RECOV RCT, 600V,4ACR9 1D440000 DIODE, ULTRAFAST RECOV RCT, 600V,4ACR10 1D620000 DIODE, TVS, 20V, BIDIRECTIONAL
SD SERIES TRANSMITTER32 • • • •••SOUTHERN AVIONICS COMPANYCR11 1D005200 DIODE, GR 50V .050ACR12 1D440000 DIODE, ULTRAFAST RECOV RCT, 600V,4ACR13 1D440000 DIODE, ULTRAFAST RECOV RCT, 600V,4ACR14 1D620000 DIODE, TVS, 20V, BIDIRECTIONALCR15 1D066200 DIODE, SW 80V .040ACR16 1D440000 DIODE, ULTRAFAST RECOV RCT, 600V,4ACR17 1D066200 DIODE, SW 80V .040ACR18 1D440000 DIODE, ULTRAFAST RECOV RCT, 600V,4ACR19 1D620000 DIODE, TVS, 20V, BIDIRECTIONALCR20 1D005200 DIODE, GR 50V .050ACR20 1D066200 DIODE, SW 80V .040ACR21 1D440000 DIODE, ULTRAFAST RECOV RCT, 600V,4ACR22 1D440000 DIODE, ULTRAFAST RECOV RCT, 600V,4ACR23 1D440000 DIODE, ULTRAFAST RECOV RCT, 600V,4AJP2 51000033 CONN, HEADER, SQ. POST, 4 POS., DUAL ROWL01 1L000003 CHOKE, 470 MH .061 OHMS 13.5A PWR LINEL02 1L000003 CHOKE, 470 MH .061 OHMS 13.5A PWR LINEL02 SLE01022 ASSY, INDUCTOR, 68 uHL03 1L000019 INDUCTOR, 220 UH @ 3.0 AMPL03 SLE01022 ASSY, INDUCTOR, 68 uHP01 51000041 CONN, HEADER 48 PIN PLUG, RT ANGLEP02 51000041 CONN, HEADER 48 PIN PLUG, RT ANGLEQ01 1T244001 XSTR HEXFET N-CHANNEL 250V 15AQ02 1T244001 XSTR HEXFET N-CHANNEL 250V 15AQ03 1T244001 XSTR HEXFET N-CHANNEL 250V 15AQ04 1T250001 XSTR HEXFET N CHANNEL 200V 33AQ05 1T250001 XSTR HEXFET N CHANNEL 200V 33AQ06 1T250001 XSTR HEXFET N CHANNEL 200V 33AQ07 1T250001 XSTR HEXFET N CHANNEL 200V 33AQ08 1T014000 XSTR N-CHANNEL 100V 31A TO-247Q09 1T221900 XSTR NPN G.P. SS TO-39Q10 1T290500 XSTR PNP 60V .6A TO205ADQ11 1T014000 XSTR N-CHANNEL 100V 31A TO-247R01 1R711030 RES, 10 OHM 1/2W 1% METAL FILMR02 1R711030 RES, 10 OHM 1/2W 1% METAL FILMR03 1R711030 RES, 10 OHM 1/2W 1% METAL FILMR04 1R711030 RES, 10 OHM 1/2W 1% METAL FILMR05 1R741020 RES, 10K 1/4W 1% MFR06 1R741020 RES, 10K 1/4W 1% MFR07 1R741020 RES, 10K 1/4W 1% MFR08 1R711030 RES, 10 OHM 1/2W 1% METAL FILMR09 1R541030 RES, 10K 1/2W 5% CFR10 1R751020 RES, 100K .25W 1% MFR11 1R731020 RES, 1K 1/4W 1% MFR12 1R012080 RES, 20 OHM 5W NIR13 1R741820 RES, 18K 1/4W 1 % MF AXIALR14 1RV41041 POT, 10K .75W CMTR15 1R012080 RES, 20 OHM 5W NIR16 1R751020 RES, 100K .25W 1% MF
SD SERIES TRANSMITTER 33 • • • •••SOUTHERN AVIONICS COMPANY SECTION 2R17 1R713920 RES, 39 OHM 1/4W 1% METAL FILMR18 1R741020 RES, 10K 1/4W 1% MFR19 1R012080 RES, 20 OHM 5W NIR20 1RV41041 POT, 10K .75W CMTR21 1R751020 RES, 100K .25W 1% MFR22 1R012080 RES, 20 OHM 5W NIR23 1R741020 RES, 10K 1/4W 1% MFR24 1R713920 RES, 39 OHM 1/4W 1% METAL FILMR25 1R741020 RES, 10K 1/4W 1% MFR26 1R751020 RES, 100K .25W 1% MFR27 1R741820 RES, 18K 1/4W 1 % MF AXIALR28 1RV41041 POT, 10K .75W CMTR29 1R721032 RES, 100 OHM 1/2W, 1% METAL FILMR30 1R741020 RES, 10K 1/4W 1% MFR31 1RV41041 POT, 10K .75W CMTR32 1R731020 RES, 1K 1/4W 1% MFR33 1R734720 RES, 4.75K 1/4W 1% MFR34 1R733320 RES, 3.3K 1/4W 1% MFR35 1R721032 RES, 100 OHM 1/2W, 1% METAL FILMR36 1R741020 RES, 10K 1/4W 1% MFR37 1RV41041 POT, 10K .75W CMTR38 1RV32040 POT, 2K .75W CMTR39 1R738220 RES, 8.2K 1/4W 1 % MF AXIALR40 1R731520 RES, 1.5K 1/4W 1% MFR41 1R731020 RES, 1K 1/4W 1% MFRT1 9T300002 THMS 1K DISCS01 9S902004 SWITCH, SPST DIP KEYBOARDT02 1X000038 TRANSFORMER, CURRENT SENSE ENCAPSULATEDT03 1X000038 TRANSFORMER, CURRENT SENSE ENCAPSULATEDT04 SLE67890 ASSY, RF DRVER INPUT TRANSFORMERT05 SLE10020 ASSY, RF DRIVER OUTPUT TRANSFORMER U01 1U211000 IC HIGH V FET BRIDGE DVRVU02 1U442800 IC FET DRVR 1.5A PEAKU03 1U324000 IC QUAD OP AMPU04 1U339000 IC LOW POWER OFFSET VOLTAGE QUAD COMPARATORU05 1U404300 IC QUAD NOR R-S LCHU06 1U751000 IC, VOLT REGULATOR LOW DROPOUT 10V"U07 1U766200 IC CMOS 8 PIN V CONVU08 1U458400 IC HEX SCHMITT TRIGGERU09 1U458400 IC HEX SCHMITT TRIGGERU10 1U617200 IC, VOLTAGE FEEDBACK ADAPTER, DUAL HIGH SPEEDU11 1U257602 IC VOLT RGLTR 3A 1.23V TO 37V ADJ STEP DOWNXQ10 9I550002 INSULATOR, MOUNTING, PAD, TO-5XQ9 9I550002 INSULATOR, MOUNTING, PAD, TO-5XU1 9S581009 SOCKET, IC, 14 PIN, DIP, KINKED LEADXU11A 9I550000 INSULATOR, TERMASIL, FOR T0-220
SD SERIES TRANSMITTER34 • • • •••Southern Avionics Company2.2.2 RF PA Power Supply PCBSLP10003 RF PA Power SupplyThe PA Power Supply (PAPS) The PA Power Supply consists of three sub-sections, namely, the Inrush Current section , the DC Controller, and the DC-DC Converter. Included with these are associated signal sense and fault circuitry. Taking them one at a time in the general structure of their usage follows.1.) The Inrush Current Section:After receiving the HV-ON signal from the Controller / Monitor, this section switches on HV-DC and controls the charge rate of the HV DC supply capacitors to avoid damagingly high inrush currents. It does this by limiting the charge current and monitoring the voltage build-up on the large capacitor bank until it reaches an acceptable charge level, after which unlimited current is applied. The Raw HV is sampled and fed back to the Controller / Monitor. 2.) The DC ControllerThis section is a buck regulator with feedback control to reduce the Raw HV DC down to level usable by the RF Power Amplifier section. Under Controller / Monitor control, the output of this section can be varied, which in turn will vary the power output of the RF Power Amplifier. The feedback allows the DC Controller to respond to the peak power demands of the PA greatly reducing or eliminating carrier droop. This section Also isolates the PA from input power fluctuations and or “brown-outs”, and maintains a steady power output over widely varying conditions. Since the DC Controller controls the RF power output and the PA sections modulator can run a constant carrier level duty cycle, power can be changed with out resetting the modulation percentage. The DC Controllers Voltage and Current output is sampled and fed back to the Controller / Monitor for monitoring. Fault conditions for current and voltage will automatically shut down the section and report to the Controller / Monitor which can attempt to bring the unit back on line if the problem was transitory or perhaps switch transmitters if the system is a dual configuration.3.) The DC-DC ConverterThe converter will take an optional 48VDC battery back-up source and produce HV which is combined with the normal AC HVDC to provide a seamless transition from AC to DC operation in the event of a Brownout or AC power failure. It is purposely set lower than the nominal AC HVDC to allow for simple diode combining and to preserve battery life while outputting a legal signal. It is NOT regulated but rather will slowly output less HV as the batteries drain. If regulated it would draw more and more current as the batteries became weaker. Since the system is computer controlled decisions can be made to stay on the air at reduced power levels in emergency situations allowing battery conservation . The Converter is a basic Chopped DC-DC converter with over-current sensing and local fault shutdown latches. The fault condition is also reported to the Controller / Monitor. A Reset of all latched fault logic states can be is performed by the Controller / Monitor as necessary. A dual low voltage +12VDC supply 12VA and 12VB is fed by +50VDC derived from the AC line or 48VDC supplied by the battery backup ensuring continuous operation of the low level stages after the initial power on. The separated 12V feeds ensures minimal cross-talk between the DC-DC Controller and the DC Controller. As an aside the 50VDC supply (located elsewhere
SD SERIES TRANSMITTER 35 • • • •••Southern Avionics Company SECTION 2depending on the system) is also monitored by the Controller / Monitor along with 48VDC Battery current and voltage for diagnostic information.
SD SERIES TRANSMITTER36 • • • •••SOUTHERN AVIONICS COMPANYSLP10003 -Assembly, PCB, RF PA Power SupplyREFERENCE DESIGNATOR COMPONENT DESCRIPTION01 SRP10003 PCB, POWER SUPPLY010 1X000038 TRANSFORMER, CURRENT SENSE ENCAPSULATEDC01 1C073310 CAP, 33M 50V ELCTLTC02 1C263050 CAP, 3.3M, 250V, METALLIZED FILMC03 1C551010 CAP, CERAMIC, .1MFD. 50V, 10%C04 1C551010 CAP, CERAMIC, .1MFD. 50V, 10%C05 1C551010 CAP, CERAMIC, .1MFD. 50V, 10%C06 1C551010 CAP, CERAMIC, .1MFD. 50V, 10%C07 1C551010 CAP, CERAMIC, .1MFD. 50V, 10%C08 1C854750 CAP, .47 UF, 250V METAL POLYC09 1C366800 CAP, 6.8M 25V TANTC10 1C121070 CAP, 100P 500V DSMC11 1C254710 CAP, .47M 50V METAL FILMC12 1C261050 CAP, 1M, 250V, MFC13 1C551010 CAP, CERAMIC, .1MFD. 50V, 10%C14 1C551010 CAP, CERAMIC, .1MFD. 50V, 10%C15 1C121070 CAP, 100P 500V DSMC16 1C432090 CAP, .002M 1KV CERC17 1C551010 CAP, CERAMIC, .1MFD. 50V, 10%C18 1C073310 CAP, 33M 50V ELCTLTC19 1C551010 CAP, CERAMIC, .1MFD. 50V, 10%C20 1C551010 CAP, CERAMIC, .1MFD. 50V, 10%C21 1C073310 CAP, 33M 50V ELCTLTC22 1C621040 CAP, 100MF, 100V ALUMINUM ELECTROYLTICC23 1C631010 CAP, 1000MF, 25V ALUMINUM ELECTROLYTICC24 1C551010 CAP, CERAMIC, .1MFD. 50V, 10%C25 1C131040 CAP 1000P 100V DSMC26 1C621040 CAP, 100MF, 100V ALUMINUM ELECTROYLTICC27 1C631010 CAP, 1000MF, 25V ALUMINUM ELECTROLYTICC28 1C551010 CAP, CERAMIC, .1MFD. 50V, 10%C29 1C551010 CAP, CERAMIC, .1MFD. 50V, 10%C30 1C252230 CAP, .22M 80V FLMC31 1C252230 CAP, .22M 80V FLMC32 1C551010 CAP, CERAMIC, .1MFD. 50V, 10%C33 1C261070 CAP, 1M 400V FLMC34 1C551010 CAP, CERAMIC, .1MFD. 50V, 10%C35 1C551010 CAP, CERAMIC, .1MFD. 50V, 10%C36 1C361000 CAP, 1M 35V TANTC37 1C621040 CAP, 100MF, 100V ALUMINUM ELECTROYLTICC38 1C551010 CAP, CERAMIC, .1MFD. 50V, 10%C39 1C551010 CAP, CERAMIC, .1MFD. 50V, 10%C40 1C073310 CAP, 33M 50V ELCTLT
SD SERIES TRANSMITTER 37 • • • •••SOUTHERN AVIONICS COMPANY SECTION 2CR1 1D508228 DIODE, SCHOTTKY BARRIERCR10 1D508228 DIODE, SCHOTTKY BARRIERCR11 1D440000 DIODE, ULTRAFAST RECOV RCT, 600V,4ACR12 1D620000 DIODE, TVS, 20V, BIDIRECTIONALCR13 1D066200 DIODE, SW 80V .040ACR14 1D066200 DIODE, SW 80V .040ACR15 1D440000 DIODE, ULTRAFAST RECOV RCT, 600V,4ACR16 1D440000 DIODE, ULTRAFAST RECOV RCT, 600V,4ACR17 1D440000 DIODE, ULTRAFAST RECOV RCT, 600V,4ACR18 1D440000 DIODE, ULTRAFAST RECOV RCT, 600V,4ACR19 1D440000 DIODE, ULTRAFAST RECOV RCT, 600V,4ACR2 1D508228 DIODE, SCHOTTKY BARRIERCR20 1D005200 DIODE, GR 50V .050ACR21 1D060000 DIODE, HYPERFAST RECTIFYING, 600V, 8ACR22 1D060000 DIODE, HYPERFAST RECTIFYING, 600V, 8ACR23 1D060000 DIODE, HYPERFAST RECTIFYING, 600V, 8ACR24 1D060000 DIODE, HYPERFAST RECTIFYING, 600V, 8ACR25 1D005200 DIODE, GR 50V .050ACR26 1D004000 DIODE, RECT 4A 400V 200A SURGE BRIDGECR27 1D400400 DIODE, RECT 400V 1A 30 DO41CR28 1D400400 DIODE, RECT 400V 1A 30 DO41CR29 1D400400 DIODE, RECT 400V 1A 30 DO41CR3 1D508228 DIODE, SCHOTTKY BARRIERCR4 1D508228 DIODE, SCHOTTKY BARRIERCR5 1D400400 DIODE, RECT 400V 1A 30 DO41CR6 1D508228 DIODE, SCHOTTKY BARRIERCR7 1D440000 DIODE, ULTRAFAST RECOV RCT, 600V,4ACR8 1D440000 DIODE, ULTRAFAST RECOV RCT, 600V,4ACR9 1D620000 DIODE, TVS, 20V, BIDIRECTIONALDS1 9L040010 LED ASSEMBLY, W/HOUSING, REDJP1 51000033 CONN, HEADER, SQ. POST, 4 POS., DUAL ROWK1 9R190017 RELAY, SPDT, 12VDC, 30A, PCMTK2 9R190017 RELAY, SPDT, 12VDC, 30A, PCMTL1 SLE10007 ASSY, INDUCTOR 350uh (COLDFIRE)L2 1L000019 NDUCTOR, 220 UH @ 3.0 AMPL3 1L000019 INDUCTOR, 220 UH @ 3.0 AMPP1 51000041 CONN, HEADER 48 PIN PLUG, RT ANGLEP2 51000041 CONN, HEADER 48 PIN PLUG, RT ANGLEQ01 1T405000 XSTR, SMPS MOSFET 500VQ02 1T405000 XSTR, SMPS MOSFET 500VQ03 1T700000 XSTR N-CHANNEL 60V 5 OHM TO-92Q04 1T700600 XSTR, N-CHANNEL POWER MOSFET 70A, 60V .014Q05 1T700600 XSTR, N-CHANNEL POWER MOSFET 70A, 60V .014Q06 1T700600 XSTR, N-CHANNEL POWER MOSFET 70A, 60V .014Q07 1T700600 XSTR, N-CHANNEL POWER MOSFET 70A, 60V .014
SD SERIES TRANSMITTER38 • • • •••SOUTHERN AVIONICS COMPANYQ08 1T344000 XSTR NPN 250V 15MHZ TO205ADQ09 1T344000 XSTR NPN 250V 15MHZ TO205ADR02 1R712220 RES, 22 OHM 1/4W 1% MFR03 1R741020 RES, 10K 1/4W 1% MFR04 1RV41041 POT, 10K .75W CMTR05 1R741020 RES, 10K 1/4W 1% MFR06 1R711030 RES, 10 OHM 1/2W 1% METAL FILMR07 1RV41041 POT, 10K .75W CMTR08 1R711030 RES, 10 OHM 1/2W 1% METAL FILMR09 1R741030 RES, 10K 1/2W 1% MF AXIALR10 1R734920 RES, 4.99K 1/4W 1% MFR11 1R751020 RES, 100K .25W 1% MFR12 1R741020 RES, 10K 1/4W 1% MFR13 1R734920 RES, 4.99K 1/4W 1% MFR14 1R731020 RES, 1K 1/4W 1% MFR15 1RV41041 POT, 10K .75W CMTR16 1R711030 RES, 10 OHM 1/2W 1% METAL FILMR17 1R731020 RES, 1K 1/4W 1% MFR18 1R741020 RES, 10K 1/4W 1% MFR19 1R741030 RES, 10K 1/2W 1% MF AXIALR20 1RV32030 POT, 2K .5W CMTR21 1R743920 RES, 39K 1/4W 1% MFR22 1R751020 RES, 100K .25W 1% MFR23 1R741020 RES, 10K 1/4W 1% MFR24 1R743920 RES, 39K 1/4W 1% MFR25 1R731020 RES, 1K 1/4W 1% MFR26 1R741820 RES, 18K 1/4W 1 % MF AXIALR27 1R751020 RES, 100K .25W 1% MFR28 1R741020 RES, 10K 1/4W 1% MFR29 1R761020 RES, 1 MEG OHM 1/4W 1% MFR30 1R751020 RES, 100K .25W 1% MFR31 1R741020 RES, 10K 1/4W 1% MFR32 1RV41041 POT, 10K .75W CMTR33 1R751020 RES, 100K .25W 1% MFR34 1R761020 RES, 1 MEG OHM 1/4W 1% MFR35 1R741020 RES, 10K 1/4W 1% MFR36 1R741020 RES, 10K 1/4W 1% MFR37 1R741020 RES, 10K 1/4W 1% MFR38 1RV41041 POT, 10K .75W CMTR39 1R741820 RES, 18K 1/4W 1 % MF AXIALR40 1RV41041 POT, 10K .75W CMTR41 1RV41041 POT, 10K .75W CMTR42 1R731020 RES, 1K 1/4W 1% MFR43 1RV32030 POT, 2K .5W CMTR44 1R738620 RES, 8.66K 1/4W 1% MFR45 1RV32030 POT, 2K .5W CMTR46 1RV21080 POT, 100 OHM .5W TOP ADJUSTR47 1R741020 RES, 10K 1/4W 1% MFR48 1RV32030 POT, 2K .5W CMT
SD SERIES TRANSMITTER 39 • • • •••SOUTHERN AVIONICS COMPANY SECTION 2R49 1R711030 RES, 10 OHM 1/2W 1% METAL FILMR50 1R738620 RES, 8.66K 1/4W 1% MFR51 1R711030 RES, 10 OHM 1/2W 1% METAL FILMR52 1R713920 RES, 39 OHM 1/4W 1% METAL FILMR53 1R741020 RES, 10K 1/4W 1% MFR54 1R731520 RES, 1.5K 1/4W 1% MFR55 1R751020 RES, 100K .25W 1% MFR56 1R711030 RES, 10 OHM 1/2W 1% METAL FILMR57 1RV41041 POT, 10K .75W CMTR58 1R744720 RES, 47K 1/4W 1% MFR59 1R741020 RES, 10K 1/4W 1% MFR60 1R761020 RES, 1 MEG OHM 1/4W 1% MFR61 1R741020 RES, 10K 1/4W 1% MFR62 1R711030 RES, 10 OHM 1/2W 1% METAL FILMR63 1R731020 RES, 1K 1/4W 1% MFR64 1R731020 RES, 1K 1/4W 1% MFR65 1R751020 RES, 100K .25W 1% MFR66 1RV41041 POT, 10K .75W CMTR67 1R713920 RES, 39 OHM 1/4W 1% METAL FILMR69 1R4150A0 RES, 50 OHM 50W 1PCT NIR70 1R651050 RES, 100K 1W 10 PCT CFR71 1R731020 RES, 1K 1/4W 1% MFR72 1R751020 RES, 100K .25W 1% MFR73 1R751020 RES, 100K .25W 1% MFR74 1R731020 RES, 1K 1/4W 1% MFR75 1R741020 RES, 10K 1/4W 1% MFR76 1R741820 RES, 18K 1/4W 1 % MF AXIALR77 1R733320 RES, 3.3K 1/4W 1% MFR78 1R733320 RES, 3.3K 1/4W 1% MFR79 1R751020 RES, 100K .25W 1% MFR80 1R731020 RES, 1K 1/4W 1% MFR81 1R741020 RES, 10K 1/4W 1% MFR82 1RV41041 POT, 10K .75W CMTS1 9S902004 SWITCH, SPST DIP KEYBOARDS2 9S902004 SWITCH, SPST DIP KEYBOARDS3 9S901004 SWITCH, SPDT PCT1 1X000038 TRANSFORMER, CURRENT SENSE ENCAPSULATEDT2 1X000038 TRANSFORMER, CURRENT SENSE ENCAPSULATEDT3 SLE10008 ASSY, TRANSFORMER DC-DC (COLDFIRE)T4 1X000038 TRANSFORMER, CURRENT SENSE ENCAPSULATEDTP0 9T200009 TEST POINT, P.C., REDTP1 9T200009 TEST POINT, P.C., REDTP10 9T200009 TEST POINT, P.C., REDTP11 9T200009 TEST POINT, P.C., REDTP12 9T200009 TEST POINT, P.C., REDTP13 9T200009 TEST POINT, P.C., RED
SD SERIES TRANSMITTER40 • • • •••SOUTHERN AVIONICS COMPANYTP14 9T200009 TEST POINT, P.C., REDTP15 9T200009 TEST POINT, P.C., REDTP16 9T200009 TEST POINT, P.C., REDTP17 9T200009 TEST POINT, P.C., REDTP18 9T200009 TEST POINT, P.C., REDTP2 9T200009 TEST POINT, P.C., REDTP3 9T200009 TEST POINT, P.C., REDTP4 9T200009 TEST POINT, P.C., REDTP5 9T200009 TEST POINT, P.C., REDTP6 9T200009 TEST POINT, P.C., REDTP7 9T200009 TEST POINT, P.C., REDTP8 9T200009 TEST POINT, P.C., REDTP9 9T200009 TEST POINT, P.C., REDU01 1U324000 IC QUAD OP AMPU02 1U211000 IC HIGH V FET BRIDGE DVRVU03 1U408100 IC QUAD 2-INP ANDU04 1U352400 IC REGULATING PULSE-WIDTH MODU05 1U442800 IC FET DRVR 1.5A PEAKU06 1U324000 IC QUAD OP AMPU07 1U339000 IC LOW POWER OFFSET VOLTAGE QUAD COMPARATORU08 1U404300 IC QUAD NOR R-S LCHU09 1U257602 IC VOLT RGLTR 3A 1.23V TO 37V ADJ STEP DOWNU10 1U803800 IC PRECISION WAVEFORM GENERATORU11 1U257602 IC VOLT RGLTR 3A 1.23V TO 37V ADJ STEP DOWNU12 1U408201 IC FET DRIVER H-BRIDGE 80V 1.25A PEAK"U13 1U408100 IC QUAD 2-INP ANDU14 1U442800 IC FET DRVR 1.5A PEAKU15 1U339000 IC LOW POWER OFFSET VOLTAGE QUAD COMPARATORU16 1U404300 IC QUAD NOR R-S LCHU17 1U324000 IC QUAD OP AMPU18 1U339000 IC LOW POWER OFFSET VOLTAGE QUAD COMPARATOR
SD SERIES TRANSMITTER 41 • • • •••Southern Avionics Company SECTION 22.2.3 Analog I/O and Audio PCBSLP10005 Analog I/O The Analog I/O and PWM PCB consists of several sub sections which accomplish the following functions:Analog Signal Input Analog Signal Output Modulation DetectionThe Analog Input Section is essentially a 40 channel low pass filtered analog MUX. These multiplexed inputs are actually an expansion scheme which adds additional analog inputs to those already available to the controller/ monitor. This allows the overall system to be expanded to control larger multi-section transmitters up to 1KW at present.Signals such as RF Power Amplifier voltage, current and temperature, to name only a few, are sampled and read in to the Controller / Monitor via this MUX. The multiplexing process is directly controlled by the Controller Monitor.The Analog Signal Output Section is a smaller MUX facilitating output control expansion. As an example, an analog control signal originating in the Controller / Monitor such as PWR_LEVEL ( a 0.0 to 4.0 volt DC level) is sent to this Sample and Hold MUX channel 1. Via this channel the MUX outputs this particular level to the PA Power Supply which dictates the output power level of the transmitter. The Next Channel of the MUX can control yet another module requiring some level of control voltage if needed. The Modulation Detector receives a detected sample of the RF envelope form the bridge circuit and converts it into two DC levels called Vmax and Vgref. The Controller / Monitor reads in these levels and subtracts Vgref from Vmax to derive Vmin. Vmax and Vmin are then used in the standard modulation formula to obtain modulation percentage in the same way as someone would calculate it manually using an oscilloscope. This circuit is intended to free the Controller / Monitor from having to sample large amounts of envelope data to statistically calculate the percentage thereby facilitating more of a real-time monitoring of modulation. Correction curves are embedded to resolve linearity issues arising from the detection process.
SD SERIES TRANSMITTER42 • • • •••SOUTHERN AVIONICS COMPANYSLP10005 - Assembly, Analog I/O and AudioREFERENCEDESIGNATOR COMPONENT DESCRIPTIONC1 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC10 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC11 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC12 6C441010 CAP, 1206, .01 M, 50V, CERAMIC CHIPC13 6C4068A0 CAP, 1206, 6.8UF, 10V, CERAMIC CHIPC14 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC15 6C4068A0 CAP, 1206, 6.8UF, 10V, CERAMIC CHIPC16 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC17 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC18 6C410000 CAP, 1206 1.0UF, 25V CERAMICC19 6C410000 CAP, 1206 1.0UF, 25V CERAMICC2 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC20 6C410000 CAP, 1206 1.0UF, 25V CERAMICC21 6C410000 CAP, 1206 1.0UF, 25V CERAMICC22 6C410000 CAP, 1206 1.0UF, 25V CERAMICC23 6C410000 CAP, 1206 1.0UF, 25V CERAMICC24 6C410000 CAP, 1206 1.0UF, 25V CERAMICC25 6C410000 CAP, 1206 1.0UF, 25V CERAMICC26 6C410000 CAP, 1206 1.0UF, 25V CERAMICC27 6C410000 CAP, 1206 1.0UF, 25V CERAMICC28 6C410000 CAP, 1206 1.0UF, 25V CERAMICC29 6C410000 CAP, 1206 1.0UF, 25V CERAMICC3 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC30 6C410000 CAP, 1206 1.0UF, 25V CERAMICC31 6C410000 CAP, 1206 1.0UF, 25V CERAMICC32 6C410000 CAP, 1206 1.0UF, 25V CERAMICC33 6C410000 CAP, 1206 1.0UF, 25V CERAMICC34 6C410000 CAP, 1206 1.0UF, 25V CERAMICC35 6C410000 CAP, 1206 1.0UF, 25V CERAMICC36 6C410000 CAP, 1206 1.0UF, 25V CERAMICC37 6C410000 CAP, 1206 1.0UF, 25V CERAMICC38 6C410000 CAP, 1206 1.0UF, 25V CERAMICC39 6C410000 CAP, 1206 1.0UF, 25V CERAMICC4 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC40 6C410000 CAP, 1206 1.0UF, 25V CERAMICC41 6C410000 CAP, 1206 1.0UF, 25V CERAMICC42 6C410000 CAP, 1206 1.0UF, 25V CERAMICC43 6C410000 CAP, 1206 1.0UF, 25V CERAMICC44 6C410000 CAP, 1206 1.0UF, 25V CERAMICC45 6C410000 CAP, 1206 1.0UF, 25V CERAMICC46 6C410000 CAP, 1206 1.0UF, 25V CERAMICC47 6C410000 CAP, 1206 1.0UF, 25V CERAMIC
SD SERIES TRANSMITTER 43 • • • •••SOUTHERN AVIONICS COMPANY SECTION 2C48 6C410000 CAP, 1206 1.0UF, 25V CERAMICC49 6C410000 CAP, 1206 1.0UF, 25V CERAMICC5 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC50 6C410000 CAP, 1206 1.0UF, 25V CERAMICC51 6C410000 CAP, 1206 1.0UF, 25V CERAMICC52 6C410000 CAP, 1206 1.0UF, 25V CERAMICC53 6C410000 CAP, 1206 1.0UF, 25V CERAMICC54 6C410000 CAP, 1206 1.0UF, 25V CERAMICC55 6C410000 CAP, 1206 1.0UF, 25V CERAMICC56 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC57 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC58 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC59 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC6 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC60 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC61 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC62 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC63 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC64 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC65 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC66 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC67 1C253310 CAP, .33M, 50V MFC68 1C254710 CAP, .47M 50V METAL FILMC69 1C253910 CAP, .0039 50V MFC7 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC70 1C251510 CAP, .15 50V MFC71 1C241010 CAP, .01M 50V FLMC77 6C310000 CAP, 10UF 25V TANTALUM CHIPC78 6C310000 CAP, 10UF 25V TANTALUM CHIPC79 6C428210 CAP, 1206, 820PF 50V CERAMIC CHIPC8 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC80 6C428210 CAP, 1206, 820PF 50V CERAMIC CHIPC81 6C310000 CAP, 10UF 25V TANTALUM CHIPC82 6C431010 CAP, 1206, 1000 PF, 50V, CERAMIC CHIPC83 6C431010 CAP, 1206, 1000 PF, 50V, CERAMIC CHIPC84 6C374700 CAP, 47 MFD, 16V, TANTALUM CHIPC85 6C374700 CAP, 47 MFD, 16V, TANTALUM CHIPC86 6C374700 CAP, 47 MFD, 16V, TANTALUM CHIPC87 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC88 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC89 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC9 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC90 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC91 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC92 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC93 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC94 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC95 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPCR1 1D508228 DIODE, SCHOTTKY BARRIER
SD SERIES TRANSMITTER44 • • • •••SOUTHERN AVIONICS COMPANYCR2 1D066200 DIODE, SW 80V .040ACR3 1D508228 DIODE, SCHOTTKY BARRIERJP1 51000032 CONN., HEADER, 2 POS. .100 x.100 CENTERSJP2 51000033 CONN, HEADER, SQ. POST, 4 POS., DUAL ROWP1 55000000 CONN, DIN, R.A. HEADER, 96 POS. PLUGQ1 1T700000 XSTR N-CHANNEL 60V 5 OHM TO-92Q2 1T700000 XSTR N-CHANNEL 60V 5 OHM TO-92R1 6R231010 RES., 1206, 1K, 1/4W, 5%, THICK FILM CHIPR10 6R231010 RES., 1206, 1K, 1/4W, 5%, THICK FILM CHIPR100 6R211020 RES, 1206 10K, 1/4W 5% THICK FILMR101 6R211020 RES, 1206 10K, 1/4W 5% THICK FILMR102 6R211020 RES, 1206 10K, 1/4W 5% THICK FILMR103 1RV41031 POT, 10K .5W SIDE ADJR11 6R231010 RES., 1206, 1K, 1/4W, 5%, THICK FILM CHIPR12 1R751020 RES, 100K .25W 1% MFR13 1R748820 RES, 88.7K 1/4W 1% MFR14 1R747520 RES, 75K 1/4W 1% MFR15 1R746120 RES, 61.9K .25W 1% MFR16 1R744820 RES, 48.7K 1/4W 1% MFR17 1R743520 RES, 35.7K 1/4W 1% MFR18 1R742320 RES, 23.2K 1/4W 1% MFR19 1R741020 RES, 10K 1/4W 1% MFR2 1RV41031 POT, 10K .5W SIDE ADJR20 6R231020 RES, 1206, 10M 1/4W 5% THICK FILMR21 6R231010 RES., 1206, 1K, 1/4W, 5%, THICK FILM CHIPR22 6R251010 RES., 1206, 100K, 1/8W, 5% THICK FILM CHIPR23 6R251010 RES., 1206, 100K, 1/8W, 5% THICK FILM CHIPR24 6R231010 RES., 1206, 1K, 1/4W, 5%, THICK FILM CHIPR25 6R241820 RES, 1206, 18K 1/4W THICK FILMR26 6R241820 RES, 1206, 18K 1/4W THICK FILMR27 6R241820 RES, 1206, 18K 1/4W THICK FILMR28 6R241820 RES, 1206, 18K 1/4W THICK FILMR29 6R241820 RES, 1206, 18K 1/4W THICK FILMR3 6R211020 RES, 1206 10K, 1/4W 5% THICK FILMR30 6R241820 RES, 1206, 18K 1/4W THICK FILMR31 6R241820 RES, 1206, 18K 1/4W THICK FILMR32 6R241820 RES, 1206, 18K 1/4W THICK FILMR33 6R241820 RES, 1206, 18K 1/4W THICK FILMR34 6R241820 RES, 1206, 18K 1/4W THICK FILMR35 6R241820 RES, 1206, 18K 1/4W THICK FILMR36 6R241820 RES, 1206, 18K 1/4W THICK FILMR37 6R241820 RES, 1206, 18K 1/4W THICK FILMR38 6R241820 RES, 1206, 18K 1/4W THICK FILMR39 6R241820 RES, 1206, 18K 1/4W THICK FILMR4 6R231020 RES, 1206, 10M 1/4W 5% THICK FILMR40 6R241820 RES, 1206, 18K 1/4W THICK FILMR41 6R241820 RES, 1206, 18K 1/4W THICK FILMR42 6R241820 RES, 1206, 18K 1/4W THICK FILMR43 6R241820 RES, 1206, 18K 1/4W THICK FILM
SD SERIES TRANSMITTER 45 • • • •••SOUTHERN AVIONICS COMPANY SECTION 2R44 6R241820 RES, 1206, 18K 1/4W THICK FILMR45 6R241820 RES, 1206, 18K 1/4W THICK FILMR46 6R241820 RES, 1206, 18K 1/4W THICK FILMR47 6R241820 RES, 1206, 18K 1/4W THICK FILMR48 6R241820 RES, 1206, 18K 1/4W THICK FILMR49 6R241820 RES, 1206, 18K 1/4W THICK FILMR5 6R251010 RES., 1206, 100K, 1/8W, 5% THICK FILM CHIPR50 6R241820 RES, 1206, 18K 1/4W THICK FILMR51 6R241820 RES, 1206, 18K 1/4W THICK FILMR52 6R241820 RES, 1206, 18K 1/4W THICK FILMR53 6R241820 RES, 1206, 18K 1/4W THICK FILMR54 6R241820 RES, 1206, 18K 1/4W THICK FILMR55 6R241820 RES, 1206, 18K 1/4W THICK FILMR56 6R241820 RES, 1206, 18K 1/4W THICK FILMR57 6R241820 RES, 1206, 18K 1/4W THICK FILMR58 6R241820 RES, 1206, 18K 1/4W THICK FILMR59 6R241820 RES, 1206, 18K 1/4W THICK FILMR6 6R251020 RES, 1206, 1M 1/4W 5% THICK FILMR60 6R241820 RES, 1206, 18K 1/4W THICK FILMR61 6R241820 RES, 1206, 18K 1/4W THICK FILMR62 6R241820 RES, 1206, 18K 1/4W THICK FILMR63 1R732010 RES, 2K 1/8W 1% MFR64 1R732010 RES, 2K 1/8W 1% MFR65 1R732010 RES, 2K 1/8W 1% MFR66 1R732010 RES, 2K 1/8W 1% MFR67 1R732010 RES, 2K 1/8W 1% MFR68 1R754520 RES, 453 OHM 1/4W 1% MFR69 1R756020 RES, 604 OHM 1/4W 1% MFR7 6R231010 RES., 1206, 1K, 1/4W, 5%, THICK FILM CHIPR70 1R745620 RES, 56.2K 1/4W 1% MFR71 1R731320 RES, 1.33K 1/4W 1% MFR72 1R742121 RES, 21K 1/4W 1% MFR73 6R211020 RES, 1206 10K, 1/4W 5% THICK FILMR74 6R211020 RES, 1206 10K, 1/4W 5% THICK FILMR75 6R211020 RES, 1206 10K, 1/4W 5% THICK FILMR76 6R126120 RES, 1206, 619 OHM 1/4W 1%R77 6R211020 RES, 1206 10K, 1/4W 5% THICK FILMR78 6R211020 RES, 1206 10K, 1/4W 5% THICK FILMR79 6R211020 RES, 1206 10K, 1/4W 5% THICK FILMR8 1RV41031 POT, 10K .5W SIDE ADJR80 6R211020 RES, 1206 10K, 1/4W 5% THICK FILMR81 6R129020 RES, 1206, 9.09K 1/4W 1%R82 6R144720 RES, 1206, 47.0K, 1/4W 1%R83 6R211020 RES, 1206 10K, 1/4W 5% THICK FILMR84 6R211020 RES, 1206 10K, 1/4W 5% THICK FILMR85 6R211020 RES, 1206 10K, 1/4W 5% THICK FILMR86 6R144720 RES, 1206, 47.0K, 1/4W 1%R87 1RV32032 POT, 2K, 5W SIDE ADJR88 6R211020 RES, 1206 10K, 1/4W 5% THICK FILM
SD SERIES TRANSMITTER46 • • • •••SOUTHERN AVIONICS COMPANYR89 6R211020 RES, 1206 10K, 1/4W 5% THICK FILMR9 6R231010 RES., 1206, 1K, 1/4W, 5%, THICK FILM CHIPR90 6R211020 RES, 1206 10K, 1/4W 5% THICK FILMR91 1RV41031 POT, 10K .5W SIDE ADJR92 6R211020 RES, 1206 10K, 1/4W 5% THICK FILMR93 6R211020 RES, 1206 10K, 1/4W 5% THICK FILMR94 6R211020 RES, 1206 10K, 1/4W 5% THICK FILMR95 6R211020 RES, 1206 10K, 1/4W 5% THICK FILMR96 6R211020 RES, 1206 10K, 1/4W 5% THICK FILMR97 6R211020 RES, 1206 10K, 1/4W 5% THICK FILMR98 6R211020 RES, 1206 10K, 1/4W 5% THICK FILMR99 6R211020 RES, 1206 10K, 1/4W 5% THICK FILMTP1 9T200009 TEST POINT, P.C., REDU1 6U711000 IC, CMOS LOW VOLATAGE QUAD SWITCHU10 6U711000 IC, CMOS LOW VOLATAGE QUAD SWITCHU11 6U139000 ID, DUAL 2 TO 4 DECODERS/DEMULTIPIEXERSU12 6U224000 IC, QUADRUPLE OPERATIONAL AMPLIFIERSU13 6U224000 IC, QUADRUPLE OPERATIONAL AMPLIFIERSU14 6U508000 IC, CHANNEL 8 TO 1 ANALOG MULTIPLEXERU15 6U080000 IC, OCTAL SAMPLE AND HOLD WITH MULTIPLEXED INPUTU16 6U224000 IC, QUADRUPLE OPERATIONAL AMPLIFIERSU17 6U224000 IC, QUADRUPLE OPERATIONAL AMPLIFIERSU18 6U224000 IC, QUADRUPLE OPERATIONAL AMPLIFIERSU19 6U224000 IC, QUADRUPLE OPERATIONAL AMPLIFIERSU2 6U711000 IC, CMOS LOW VOLATAGE QUAD SWITCHU20 6U224000 IC, QUADRUPLE OPERATIONAL AMPLIFIERSU21 6U224000 IC, QUADRUPLE OPERATIONAL AMPLIFIERSU22 6U224000 IC, QUADRUPLE OPERATIONAL AMPLIFIERSU23 6U224000 IC, QUADRUPLE OPERATIONAL AMPLIFIERSU24 6U224000 IC, QUADRUPLE OPERATIONAL AMPLIFIERSU25 6U224000 IC, QUADRUPLE OPERATIONAL AMPLIFIERSU26 6U224000 IC, QUADRUPLE OPERATIONAL AMPLIFIERSU27 1U553200 IC DUAL LOW-NOISE OP AMPU28 1U553200 IC DUAL LOW-NOISE OP AMPU29 1U553200 IC DUAL LOW-NOISE OP AMPU3 6U711000 IC, CMOS LOW VOLATAGE QUAD SWITCHU4 6U711000 IC, CMOS LOW VOLATAGE QUAD SWITCHU5 6U711000 IC, CMOS LOW VOLATAGE QUAD SWITCHU6 6U711000 IC, CMOS LOW VOLATAGE QUAD SWITCHU7 6U711000 IC, CMOS LOW VOLATAGE QUAD SWITCHU8 6U711000 IC, CMOS LOW VOLATAGE QUAD SWITCHU9 6U711000 IC, CMOS LOW VOLATAGE QUAD SWITCH
SD SERIES TRANSMITTER 47 • • • •••Southern Avionics Company SECTION 22.2.4 Controller / Monitor PCBSLP10007 – Controller / MonitorThe CONTROLLER/ MONITOR employs the new Motorola MCF5206 COLDFIRE® microprocessor. It encompasses the following sections:1. COLDFIRE Processor – 32-bit2. ADC – 8-Channel 12-bit3. DAC – 8-Channel 8-bit4. DDS - Radio Frequency (190K to 1800KHz)5. DDS – Tone Frequency (400 / 1020 Hz)6. Flash Memory – 4Mb7. DRAM – 16Mb8. Programmable Logic9. Digital I/O (Read/Write)10. UART11. Watch Timer and NV-RAM² COLDFIRE Processor section:The LOGIC program creates 16MHz from 32MHz for the clock frequency of the microprocessor. The processor controls several peripheral functions such as memory, task timers, I/O bus lines, and RS-232 ports. For the dual system, the primary Controller / Monitor and secondary Controller / Monitor may talk to each other through Controller / Monitor Motherboard (SLP10012) by using 2 COM-PORT lines (ex: RXD & TXD). Each Controller / Monitor has one interrupt line for paying attention what other Controller / Monitor has something is important, then Controller / Monitor sets “RS-232” MUX to be enabled.² Analog-to-Digital converter (ADC) section:The Controller / Monitor Controller PCB has two (AD7891) 12-bit ADC chips, so there are 16 analog inputs. The channel selection of input range is 0 to +5 V. ² Digital-to-Analog Converter (DAC) section:The 8-bit DAC provides eight digitally controlled dc voltage outputs. The limited of output range is 0 to +5 V. The user may adjust dc analog level or turn on/off likely digital level. ² RF Direct Digital Synthesizer (DDS) section:The 50MHz clock input is for the RF DDS. The RF DDS provides two differentsignal-waves (square wave and sine wave). The square wave level is 0 to +5.0 V(recommended) and the sine wave level is 0 to 1.0 V. The DDS has 8 data digitally
SD SERIES TRANSMITTER48 • • • •••Southern Avionics Companyinputs. The code may store 4 data bytes for the 32-bit RF DDS tuning word. RF isenabled by writing the desired frequency to the DDS, and disabled by writing a zerofrequency to the DDS. The RF DDS goes the signal through EMI filter to generate alow jitter square wave output.² Tone Frequency Direct Digital Synthesizer section:The 50MHz clock input is also used by the AF DDS. The AF DDS signal is sine waveonly. The user may adjust AF amplitude modulation. Two methods for keying the toneare available. The first is like the RF DDS - load a frequency into the registers of theDDS chip. The second is simply “keying” (digital ON/OFF) of a reserved I/O signal.The settings for ID mode, ID code, ID rate, sequence of operation and otherparameters are set by a user interface program.² Flash Memory section:Its 4Mb of memory is organized as 512K x 8. The firmware for the E(E)PROM is written in assembly / C code. It may move data to DRAM and NV-RAM memory when the power is up. It is simple to replace when the code is updated.² DRAM section:The PCB has two DRAM devices. It totals 1Mb x 16 x 2 (32-bit data). During initialization the EPROM moves data to the DRAM.² Programmable LOGIC (LATTICE device) section:There are two LATTICE chips on the PCB. The Programmable Logic provides several necessary functions such as control lines, 1Hz, 16MHz, enabled / disabled lines and interrupt lines.² Digital I/O section:There are 32 digital inputs or outputs and 4 control lines for writing. Each control has 8 data lines organized as one byte each. They are used for the status fault, frequency reading, reset, and control data. ² Universal Synchronous/Asynchronous Receiver/Transmitters (UART) section:The Controller / Monitor processor has two UARTs. They are used for RS-232 only. SAC offers four possible transmitter configurations as follows:B) Single TX without a LOCAL CONTROL panel:
SD SERIES TRANSMITTER 49 • • • •••Southern Avionics Company SECTION 2The Controller / Monitor serial port 1 is probably used for PC.The Controller / Monitor serial port 2 is used for PC / Modem through Controller / Monitor Motherboard (Controller / Monitor MB – SLP10012).C) Single TX with a LOCAL CONTROL panel:The Controller / Monitor serial port 1 is used for the local operating panel.The Controller / Monitor serial port 2 is used for PC / Modem through Controller / Monitor MB.D) Dual TX without a LOCAL CONTROL panel:Either Controller / Monitor1 or Controller / Monitor2 serial port 1 is probably used for PC.The serial port 2 is used for PC / Modem through Controller / Monitor MB.E) Dual TX with a LOCAL CONTROL panel:Either Controller / Monitor1 or Controller / Monitor2 serial port 1 is used for local operating panel.The serial port 2 is used for PC / Modem through Controller / Monitor MB. ² Watch Timer and NV-RAM section:The NV-RAM provides 32Kb of memory available to the user. The NV-RAM can hold data more than 10 years in the absence of power. It allows the operator to store various settings in NV memory. When the power is up, Controller / Monitor can follow the user settings in NV memory. The Watchdog timer restarts an out of control Controller / Monitor processor. The code may use the real-time clock for 255 task timers (background).
SD SERIES TRANSMITTER50 • • • •••SOUTHERN AVIONICS COMPANYSLP10007 - Assembly, PCB, Controller / MonitorREFERENCEDESIGNATOR COMPONENT DESCRIPTIONSLG10001 ASSY, EPROM, CF PROCESSOR SOFTWAREC1 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC10 6C441010 CAP, 1206, .01 M, 50V, CERAMIC CHIPC11 6C441010 CAP, 1206, .01 M, 50V, CERAMIC CHIPC12 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC13 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC14 6C412240 CAP, 1206, 22PF, 100V, CERAMIC CHIPC16 6C413340 CAP, 1206, 33PF, 100V, CERAMIC CHIPC19 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC2 6C374700 CAP, 47 MFD, 16V, TANTALUM CHIPC20 6C412240 CAP, 1206, 22PF, 100V, CERAMIC CHIPC21 6C374700 CAP, 47 MFD, 16V, TANTALUM CHIPC22 6C374700 CAP, 47 MFD, 16V, TANTALUM CHIPC23 6C374700 CAP, 47 MFD, 16V, TANTALUM CHIPC24 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC25 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC26 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC27 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC28 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC29 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC3 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC30 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC31 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC32 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC33 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC34 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC35 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC36 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC37 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC38 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC39 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC4 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC40 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC41 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC42 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC43 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC44 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC45 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC46 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC47 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC48 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC49 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC5 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIP
SD SERIES TRANSMITTER 51 • • • •••SOUTHERN AVIONICS COMPANY SECTION 2C50 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC51 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC52 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC53 6C374700 CAP, 47 MFD, 16V, TANTALUM CHIPC54 6C374700 CAP, 47 MFD, 16V, TANTALUM CHIPC55 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC56 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC57 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC58 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC59 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC6 6C374700 CAP, 47 MFD, 16V, TANTALUM CHIPC60 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC61 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC62 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC63 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC64 6C374700 CAP, 47 MFD, 16V, TANTALUM CHIPC65 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC66 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC67 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC68 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC69 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC7 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC70 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC71 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC72 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC73 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC74 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC75 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC76 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC8 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC9 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPJP1 51000026 CONN., HEADER, SQUARE POST, 3 POS. SINGLE ROWP1 51000014 CONN, HEADER, SQ. POST, 8 POS., SINGLE ROWP2 51000030 CONN., HEADER, BREAKAWAY, 10 POS DUAL ROWP4 55000000 CONN, DIN, R.A. HEADER, 96 POS. PLUGP5 51000016 CONN, R.A. HEADER, D-SUB, 9 PINP6 51000016 CONN, R.A. HEADER, D-SUB, 9 PINR1 6R231010 RES., 1206, 1K, 1/4W, 5%, THICK FILM CHIPR10 6R222010 RES., 1206 200 OHM 1/4W, 5% THICK FILM CHIPR11 6R251010 RES., 1206, 100K, 1/8W, 5% THICK FILM CHIPR12 6R221010 RES., 1206, 100 OHM, 1/4W, 5% THICK FILM CHIPR13 6R251010 RES., 1206, 100K, 1/8W, 5% THICK FILM CHIPR14 6R221010 RES., 1206, 100 OHM, 1/4W, 5% THICK FILM CHIPR15 6R222010 RES., 1206 200 OHM 1/4W, 5% THICK FILM CHIPR16 6R233910 RES., 1206, 3.9K, 1/4W, 5% THICK FILM CHIPR17 6R231010 RES., 1206, 1K, 1/4W, 5%, THICK FILM CHIPR18 6R231010 RES., 1206, 1K, 1/4W, 5%, THICK FILM CHIP
SD SERIES TRANSMITTER52 • • • •••SOUTHERN AVIONICS COMPANYR19 6R231010 RES., 1206, 1K, 1/4W, 5%, THICK FILM CHIPR2 6R231010 RES., 1206, 1K, 1/4W, 5%, THICK FILM CHIPR3 6R231010 RES., 1206, 1K, 1/4W, 5%, THICK FILM CHIPR4 6R231010 RES., 1206, 1K, 1/4W, 5%, THICK FILM CHIPR5 6R231010 RES., 1206, 1K, 1/4W, 5%, THICK FILM CHIPR6 6R231010 RES., 1206, 1K, 1/4W, 5%, THICK FILM CHIPR7 6R231010 RES., 1206, 1K, 1/4W, 5%, THICK FILM CHIPR8 6R215110 RES., 51 OHM, 1/4W, 5% THICK FILM CHIPR9 6R215110 RES., 51 OHM, 1/4W, 5% THICK FILM CHIPRP1 1RS31020 RES, NETWORK SIP 1K .20WU1 6U021300 IC, SINGLE SUPPLY DUAL OP AMPU10 6U021300 IC, SINGLE SUPPLY DUAL OP AMPU11 6U021300 IC, SINGLE SUPPLY DUAL OP AMPU12 6U021300 IC, SINGLE SUPPLY DUAL OP AMPU13 6U021300 IC, SINGLE SUPPLY DUAL OP AMPU14 6YD50000 CRYSTAL, 50 MHZ HIGH FREQUENCY, SG-615 SERIESU15 6U983000 IC, CMOS, DDS, NUMERICALLY CONTROLLED OSCILLATORU16 6U985000 IC, CMOS 125 MHZ DDS SYNTHESIZERU17 9F347000 FILTER, EMI COIL TYPE 470PFU19 6U520600 IC, COLDFIRE MICROPROCESSORU2 6U789100 IC, 12 BIT IGH SPEED DATA ACQUISITIONU20 1U290400 IC, 512K X 8 CMOS FLASH MEMORYU21 1U138601 IC, TIMEKEEPER RAMIFIED WATCHDOG 32K-120U22 6U020800 IC, CMOS RS-232 DRIVER/RECEIVERU23 6U456401 IC, PROGRAMMABLE, 44 PIN TQFPU24 6U411601 IC, 1 MEG X 16 EXTENDED DATA OUT DRUMU25 6U456401 IC, PROGRAMMABLE, 44 PIN TQFPU26 6U411601 IC, 1 MEG X 16 EXTENDED DATA OUT DRUMU27 6YC10000 CRYSTAL, 32 MHZ SURFACE MOUNT KFO SERIESU28 6U070800 IC, LOW COST MP SUPERVISORY CIRCUITU29 6U057300 IC, OCTAL TRANSPARENT D-TYPE LATCHU3 6U021300 IC, SINGLE SUPPLY DUAL OP AMPU30 6U057300 IC, OCTAL TRANSPARENT D-TYPE LATCHU31 6U057300 IC, OCTAL TRANSPARENT D-TYPE LATCHU32 6U057300 IC, OCTAL TRANSPARENT D-TYPE LATCHU33 6U057300 IC, OCTAL TRANSPARENT D-TYPE LATCHU34 6U057300 IC, OCTAL TRANSPARENT D-TYPE LATCHU35 6U057300 IC, OCTAL TRANSPARENT D-TYPE LATCHU36 6U057300 IC, OCTAL TRANSPARENT D-TYPE LATCHU37 6U509000 IC, CHANNEL ANALOG MULTIPLEXERU38 6U745740 IC, OCTAL EDGE TRIGGERED D-TYPE FLIP FLOPU4 6U021300 IC, SINGLE SUPPLY DUAL OP AMPU5 6U019500 IC, VOLTAGE REFERENCEU6 6U021300 IC, SINGLE SUPPLY DUAL OP AMPU7 6U880300 IC, OCTAL 8 BIT TRIMDACU8 6U021300 IC, SINGLE SUPPLY DUAL OP AMP
SD SERIES TRANSMITTER 53 • • • •••SOUTHERN AVIONICS COMPANY SECTION 2U9 6U789100 IC, 12 BIT IGH SPEED DATA ACQUISITION
SD SERIES TRANSMITTER54 • • • •••Southern Avionics Company2.2.4 Digital I/O and PWM PCBSLP10009 Digital I/O and PWM TheoryThe Digital I/O and PWM PCB consists of several sub sections which accomplish the following functions:Digital Input State Reading Digital Output ControlFrequency Counting Audio to PWM ConversionAWOS Option.The Digital Input Section receives and conditions state information from the various system modules mainly indicating the fault status of these sections but also monitoring the state of other sensors. While retaining their unique state value all of these signals are combined into one interrupt request (IRQ) line for rapid servicing of external events. A local red fault LED indicates the arrival of a fault condition. The processor take action depending on the nature of the condition.The Digital Output Section conditions and outputs a state condition to the various system modules primarily to perform fault resets. Antenna switching is also controlled by this section.The Frequency Counter section conditions and samples the Direct Digital Synthesizer generated frequency from the RF power amplifier. This data is relayed to the processor which monitors the output RF frequency for accuracy.The PWM section of this board inputs audio signals from the tone generating Direct Digital Synthesizer and from an optional voice input piggybacked PCB for AWOS functionality. The composite audio signal is summed with an adjustable DC level and converted into a 75 kHz Pulse Width Modulated signal with its basic no-audio duty cycle being set at a fixed percentage. This fixed level facilitates modulation tracking irregardless of power level output. A back-up modulation limiting circuit prevents over-modulation from damaging the RF Amplifier but main over modulation protection control for Tone signals is a software function of the processor which monitors modulation at all times. The Optional AWOS plug in PCB Contains an AGC section which prevents over-modulation by the USER audio signal. There is also a built in active Audio band-pass filter which eliminates signals outside of the 300 to 3000Hz pass band. Signals generated on this Optional PCB also alert the processor which then cuts the main tone level and temporarily ceases issuing any modulation alarms based on modulation percentage.
SD SERIES TRANSMITTER 55 • • • •••SOUTHERN AVIONICS COMPANY SECTION 2SLP10009 - Assembly, PCB, Digital I/O and PWMREFERENCEDESIGNATOR COMPONENT DESCRIPTION05 9P100000 PIN, MOUNTINGC1 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC10 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC11 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC12 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC13 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC14 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC15 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC17 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC18 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC19 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC2 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC20 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC21 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC22 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC23 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC24 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC25 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC26 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC27 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC28 1C131040 CAP 1000P 100V DSMC29 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC3 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC30 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC31 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC32 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC33 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC34 6C374700 CAP, 47 MFD, 16V, TANTALUM CHIPC35 6C374700 CAP, 47 MFD, 16V, TANTALUM CHIPC36 6C374700 CAP, 47 MFD, 16V, TANTALUM CHIPC4 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC5 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC6 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC7 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC8 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC9 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPCR1 1D508228 DIODE, SCHOTTKY BARRIERDS1 9L040012 LED ASSEMBLY, W / HOUSING GREENDS2 9L040012 LED ASSEMBLY, W / HOUSING GREENDS3 9L040010 LED ASSEMBLY, W/HOUSING, REDP1 51000030 CONN., HEADER, BREAKAWAY, 10 POS DUAL ROWP2 55000000 CONN, DIN, R.A. HEADER, 96 POS. PLUG
SD SERIES TRANSMITTER56 • • • •••SOUTHERN AVIONICS COMPANYR1 6R211020 RES, 1206 10K, 1/4W 5% THICK FILMR10 6R233910 RES., 1206, 3.9K, 1/4W, 5% THICK FILM CHIPR11 1RV31031 POT, 1K 5W SIDE ADJR12 6R231010 RES., 1206, 1K, 1/4W, 5%, THICK FILM CHIPR13 6R231010 RES., 1206, 1K, 1/4W, 5%, THICK FILM CHIPR14 6R222010 RES., 1206 200 OHM 1/4W, 5% THICK FILM CHIPR15 6R222010 RES., 1206 200 OHM 1/4W, 5% THICK FILM CHIPR2 6R231010 RES., 1206, 1K, 1/4W, 5%, THICK FILM CHIPR3 6R211020 RES, 1206 10K, 1/4W 5% THICK FILMR4 1RV31031 POT, 1K 5W SIDE ADJR5 1R625650 RES, 560 OHM 1W 10 PCT CFR6 6R221010 RES., 1206, 100 OHM, 1/4W, 5% THICK FILM CHIPR7 6R233910 RES., 1206, 3.9K, 1/4W, 5% THICK FILM CHIPR8 6R221010 RES., 1206, 100 OHM, 1/4W, 5% THICK FILM CHIPR9 1R748220 RES, 82.5K 1/4W 1% MFRP1 1RS31020 RES, NETWORK SIP 1K .20WRP2 1RS31020 RES, NETWORK SIP 1K .20WRP3 1RS31020 RES, NETWORK SIP 1K .20WTP1 9T200009 TEST POINT, P.C., REDTP2 9T200009 TEST POINT, P.C., REDTP3 9T200009 TEST POINT, P.C., REDU1 6U450400 IC, CMOS HEX VOLTAGE LEVEL SHIFTERU10 6U037300 IC, OCTAL TRANSPARENT D-TYPE LATCHESU11 6U407500 IC, GATE 3 INPUTU12 6U037300 IC, OCTAL TRANSPARENT D-TYPE LATCHESU13 6U407500 IC, GATE 3 INPUTU14 6U037300 IC, OCTAL TRANSPARENT D-TYPE LATCHESU15 6U407500 IC, GATE 3 INPUTU16 6U450400 IC, CMOS HEX VOLTAGE LEVEL SHIFTERU17 6U037300 IC, OCTAL TRANSPARENT D-TYPE LATCHESU18 6U450400 IC, CMOS HEX VOLTAGE LEVEL SHIFTERU19 6U037300 IC, OCTAL TRANSPARENT D-TYPE LATCHESU2 6U740400 IC, CMOS HIGH SPEED LOGIC HEX INVERTERU20 6U450400 IC, CMOS HEX VOLTAGE LEVEL SHIFTERU21 6U037300 IC, OCTAL TRANSPARENT D-TYPE LATCHESU22 6U450400 IC, CMOS HEX VOLTAGE LEVEL SHIFTERU23 6U456401 IC, PROGRAMMABLE, 44 PIN TQFPU24 6U442800 IC, DUAL POWER MOSFETU25 1U803800 IC PRECISION WAVEFORM GENERATORU26 6U219000 IC, HIGH SPEED DUAL COMPARATORU27 1U553200 IC DUAL LOW-NOISE OP AMPU3 6U450400 IC, CMOS HEX VOLTAGE LEVEL SHIFTERU4 6U740400 IC, CMOS HIGH SPEED LOGIC HEX INVERTERU5 6U450400 IC, CMOS HEX VOLTAGE LEVEL SHIFTERU6 6U740400 IC, CMOS HIGH SPEED LOGIC HEX INVERTERU7 6U450400 IC, CMOS HEX VOLTAGE LEVEL SHIFTERU8 6U740400 IC, CMOS HIGH SPEED LOGIC HEX INVERTERU9 6U407500 IC, GATE 3 INPUT
SD SERIES TRANSMITTER 57 • • • •••Southern Avionics Company SECTION 22.3 Detailed Circuit Analysis: Dual TransmitterDetailed circuit Analysis in this location.2.3.1 SLP10012 - Controller MotherboardHere will be a written description of the functionality of the ColdFire Motherboard.
SD SERIES TRANSMITTER58 • • • •••SOUTHERN AVIONICS COMPANYSLP10012 - Assembly, PCB, Controller Motherboard REFERENCEDESIGNATOR COMPONENT DESCRIPTION01 SRP10012 PCB, CF MOTHERBOARDC01 1C551010 CAP, CERAMIC, .1MFD. 50V, 10%C02 1C551010 CAP, CERAMIC, .1MFD. 50V, 10%J01 51000019 CONN., HEADER, .025 SQ. POSTS, 14 PINJ02 51000019 CONN., HEADER, .025 SQ. POSTS, 14 PINJ03 51000019 CONN., HEADER, .025 SQ. POSTS, 14 PINJ04 51000019 CONN., HEADER, .025 SQ. POSTS, 14 PINJ05 51000019 CONN., HEADER, .025 SQ. POSTS, 14 PINJ06 51000019 CONN., HEADER, .025 SQ. POSTS, 14 PINJ07 51000019 CONN., HEADER, .025 SQ. POSTS, 14 PINJ08 51000019 CONN., HEADER, .025 SQ. POSTS, 14 PINJ09 51000018 CONN., HEADER, .025 SQ. POSTS, 10 PINJ10 51000018 CONN., HEADER, .025 SQ. POSTS, 10 PINJ11 51000020 CONN., HEADER, .025 SQ. POSTS, 20 PINJ12 51000020 CONN., HEADER, .025 SQ. POSTS, 20 PINJ13 51000021 CONN, HEADER, .025 SQ. POSTS, 26 PINJ20 51000042 CONN, BREAKAWAY HEADER 156 CENTER 8 POSJP1 51000026 CONN., HEADER, SQUARE POST, 3 POS. SINGLE ROWJP2 51000026 CONN., HEADER, SQUARE POST, 3 POS. SINGLE ROWJP3 51000026 CONN., HEADER, SQUARE POST, 3 POS. SINGLE ROWTB01A 50000007 CONN TERM BLK, 3 POS, FRONT INLET PC MTTB01B 50000007 CONN TERM BLK, 3 POS, FRONT INLET PC MTTB01C 50000005 CONN TERM BLK, 2 POS, FRONT INLET PC MTTB02A 50000007 CONN TERM BLK, 3 POS, FRONT INLET PC MTTB02B 50000007 CONN TERM BLK, 3 POS, FRONT INLET PC MTTB02C 50000005 CONN TERM BLK, 2 POS, FRONT INLET PC MTTB03 50000005 CONN TERM BLK, 2 POS, FRONT INLET PC MTTB04 50000005 CONN TERM BLK, 2 POS, FRONT INLET PC MTTB05 50000005 CONN TERM BLK, 2 POS, FRONT INLET PC MTTB06 50000005 CONN TERM BLK, 2 POS, FRONT INLET PC MTTB10A 50000007 CONN TERM BLK, 3 POS, FRONT INLET PC MTTB10B 50000007 CONN TERM BLK, 3 POS, FRONT INLET PC MTTB10C 50000005 CONN TERM BLK, 2 POS, FRONT INLET PC MTTB11 50000005 CONN TERM BLK, 2 POS, FRONT INLET PC MTTB12 50000005 CONN TERM BLK, 2 POS, FRONT INLET PC MTTB13A 50000007 CONN TERM BLK, 3 POS, FRONT INLET PC MTTB13B 50000005 CONN TERM BLK, 2 POS, FRONT INLET PC MTTB14A 50000007 CONN TERM BLK, 3 POS, FRONT INLET PC MTTB14B 50000005 CONN TERM BLK, 2 POS, FRONT INLET PC MTTB15 50000007 CONN TERM BLK, 3 POS, FRONT INLET PC MTTB16 50000007 CONN TERM BLK, 3 POS, FRONT INLET PC MTTB7A 50000005 CONN TERM BLK, 2 POS, FRONT INLET PC MTTB7B 50000005 CONN TERM BLK, 2 POS, FRONT INLET PC MTTB8A 50000005 CONN TERM BLK, 2 POS, FRONT INLET PC MTTB8B 50000005 CONN TERM BLK, 2 POS, FRONT INLET PC MTTB9A 50000007 CONN TERM BLK, 3 POS, FRONT INLET PC MTTB9B 50000007 CONN TERM BLK, 3 POS, FRONT INLET PC MT
SD SERIES TRANSMITTER 59 • • • •••SOUTHERN AVIONICS COMPANY SECTION 2TB9C 50000005 CONN TERM BLK, 2 POS, FRONT INLET PC MTU1 1U050900 IC DUAL 4-TO-1 ANALOG MULTIPLEXERXA10 55000001 CONN, DIN, PCB HEADER, 96 POS. RECPT.XA3 55000001 CONN, DIN, PCB HEADER, 96 POS. RECPT.XA4 55000001 CONN, DIN, PCB HEADER, 96 POS. RECPT.XA5 55000001 CONN, DIN, PCB HEADER, 96 POS. RECPT.XA6 55000001 CONN, DIN, PCB HEADER, 96 POS. RECPT.XA7 55000001 CONN, DIN, PCB HEADER, 96 POS. RECPT.XA8 55000001 CONN, DIN, PCB HEADER, 96 POS. RECPT.XA9 55000001 CONN, DIN, PCB HEADER, 96 POS. RECPT.XJ01A 5A000030 LOCK, EJECTOR HOOK, SHORTXJ01B 5A000030 LOCK, EJECTOR HOOK, SHORTXJ02A 5A000030 LOCK, EJECTOR HOOK, SHORTXJ02B 5A000030 LOCK, EJECTOR HOOK, SHORTXJ03A 5A000030 LOCK, EJECTOR HOOK, SHORTXJ03B 5A000030 LOCK, EJECTOR HOOK, SHORTXJ04A 5A000030 LOCK, EJECTOR HOOK, SHORTXJ04B 5A000030 LOCK, EJECTOR HOOK, SHORTXJ05A 5A000030 LOCK, EJECTOR HOOK, SHORTXJ05B 5A000030 LOCK, EJECTOR HOOK, SHORTXJ06A 5A000030 LOCK, EJECTOR HOOK, SHORTXJ06B 5A000030 LOCK, EJECTOR HOOK, SHORTXJ07A 5A000030 LOCK, EJECTOR HOOK, SHORTXJ07B 5A000030 LOCK, EJECTOR HOOK, SHORTXJ08A 5A000030 LOCK, EJECTOR HOOK, SHORTXJ08B 5A000030 LOCK, EJECTOR HOOK, SHORTXJ09A 5A000030 LOCK, EJECTOR HOOK, SHORTXJ09B 5A000030 LOCK, EJECTOR HOOK, SHORTXJ10A 5A000030 LOCK, EJECTOR HOOK, SHORTXJ10B 5A000030 LOCK, EJECTOR HOOK, SHORTXJ11A 5A000030 LOCK, EJECTOR HOOK, SHORTXJ11B 5A000030 LOCK, EJECTOR HOOK, SHORTXJ12A 5A000030 LOCK, EJECTOR HOOK, SHORTXJ12B 5A000030 LOCK, EJECTOR HOOK, SHORTXJ13A 5A000030 LOCK, EJECTOR HOOK, SHORTXJ13B 5A000030 LOCK, EJECTOR HOOK, SHORTXJP1 9S320001 SHUNT STAND PROFILE GOLDXJP2 9S320001 SHUNT STAND PROFILE GOLDXJP3 9S320001 SHUNT STAND PROFILE GOLD
SD SERIES TRANSMITTER60 • • • •••Southern Avionics Company2.3.2 Dual Low Voltage Power Supply PCBSLP10017 Low Voltage Power Supply The LVPS Furnishes +5, +12, and -12VDC to the Controller/ Monitor Mother Board and itself plugs into the mother PCB. It is transformer driven to allow for 115/230VAC operation. 48VDC operation allows running off of emergency battery. The LVPS also passes 50VDC or 48V BATTERY to the user section to power miscellaneous circuitry.
SD SERIES TRANSMITTER 61 • • • •••SOUTHERN AVIONICS COMPANY SECTION 2SLP10017 - Assembly, Low voltage Power Supply (Coldfire)REFERENCEDESIGNATOR COMPONENT DESCRIPTIONC1 1C621040 CAP, 100MF, 100V ALUMINUM ELECTROYLTICC2 1C631010 CAP, 1000MF, 25V ALUMINUM ELECTROLYTICC3 1C631040 CAP, 1000MF 100V ALUMINUM ELECTROYLICC4 1C621040 CAP, 100MF, 100V ALUMINUM ELECTROYLTICC5 1C631010 CAP, 1000MF, 25V ALUMINUM ELECTROLYTICC6 1C681800 CAP, 180 MFD, 35V ALUMINUM ELECTROLYTICC7 1C631010 CAP, 1000MF, 25V ALUMINUM ELECTROLYTICC8 1C621040 CAP, 100MF, 100V ALUMINUM ELECTROYLTICC9 1C631010 CAP, 1000MF, 25V ALUMINUM ELECTROLYTICCR1 1D440000 DIODE, ULTRAFAST RECOV RCT, 600V,4ACR2 1D440000 DIODE, ULTRAFAST RECOV RCT, 600V,4ACR3 1D440000 DIODE, RECT 4A 400V 200A SURGE BRIDGECR4 1D004000 DIODE, ULTRAFAST RECOV RCT, 600V,4ACR5 1D440000 DIODE, ULTRAFAST RECOV RCT, 600V,4ACR6 1D440000 DIODE, ULTRAFAST RECOV RCT, 600V,4ACR7 1D440000 DIODE, ULTRAFAST RECOV RCT, 600V,4ACR8 1D440000 DIODE, ULTRAFAST RECOV RCT, 600V,4ACR9 1D440000 DIODE, ULTRAFAST RECOV RCT, 600V,4ACR10 1D440000 DIODE, ULTRAFAST RECOV RCT, 600V,4ACR11 1D440000 DIODE, ULTRAFAST RECOV RCT, 600V,4AF1 9F830020 FUSE, 2 AMP, 250V, 3AG (AGC) FAST ACTING TYPEL1 1L000019 INDUCTOR, 220 UH @ 3.0 AMPL2 1L000019 INDUCTOR, 220 UH @ 3.0 AMPL3 1L000019 INDUCTOR, 220 UH @ 3.0 AMPL4 1L000019 INDUCTOR, 220 UH @ 3.0 AMPR1 1RV32032 POT, 2K 5W SIDE ADJUSTR2 1R633320 RES, 3.3K .25W 10 PCT CFR3 1RV32032 POT, 2K 5W SIDE ADJUSTR4 1R638220 RES, 8.2K .25W 10 PCT CFR5 1RV32032 POT, 2K 5W SIDE ADJUSTR6 1R638220 RES, 8.2K .25W 10 PCT CFP1 55000000 CONN, HDR 96 PIN RIGHT ANGLET1 1X000039 TRANSFOMRER, 63VA TOROIDTP0 9T200009 TEST POINT, P.C., REDTP1 9T200009 TEST POINT, P.C., REDTP2 9T200009 TEST POINT, P.C., REDTP3 9T200009 TEST POINT, P.C., REDU1 1U257602 IC VOLT RGLTR 3A 1.23V TO 37V ADJ STEP DOWNU2 1U257602 IC VOLT RGLTR 3A 1.23V TO 37V ADJ STEP DOWN
SD SERIES TRANSMITTER62 • • • •••SOUTHERN AVIONICS COMPANYU3 1U257600 IC VOLT RGLTR 3A 12V STEP DOWNU4 1U257602 IC VOLT RGLTR 3A 1.23V TO 37V ADJ STEP DOWNXF1 9F831000 FUSECLIP PC MTXF2 9F831000 FUSECLIP PC MT
SD SERIES TRANSMITTER 63 • • • •••SOUTHERN AVIONICS COMPANY SECTION 22.3.3 RF MOTHERBOARD PCBSLP10004 - Assembly, PCB RF Motherboard REFERENCE DESIGNATOR COMPONENT DESCRIPTIONC01 1C631040 CAP, 1000MF 100V ALUMINUM ELECTROYLICC02 1C631570 CAP, 1500PF 400V ALUMINUM ELECTROLYTICC03 1C631570 CAP, 1500PF 400V ALUMINUM ELECTROLYTICC04 1C631570 CAP, 1500PF 400V ALUMINUM ELECTROLYTICC05 1C631570 CAP, 1500PF 400V ALUMINUM ELECTROLYTICC06 1C631570 CAP, 1500PF 400V ALUMINUM ELECTROLYTICC07 1C631570 CAP, 1500PF 400V ALUMINUM ELECTROLYTICC08 1C631570 CAP, 1500PF 400V ALUMINUM ELECTROLYTICC09 1C631570 CAP, 1500PF 400V ALUMINUM ELECTROLYTICC10 1C631570 CAP, 1500PF 400V ALUMINUM ELECTROLYTICCR1 1D350600 DIODE, BRIDGE RECTIFER 600V 35ACR2 1D004000 DIODE, RECT 4A 400V 200A SURGE BRIDGECR3 1D400400 DIODE, RECT 400V 1A 30 DO41CR4 1D400400 DIODE, RECT 400V 1A 30 DO41DS1 1DL17000 LED, HIGH EFFICIENCY RED, 2.0 MADS2 1DL17000 LED, HIGH EFFICIENCY RED, 2.0 MAF1 9F830020 FUSE, 2 AMP, 250V, 3AG (AGC) FAST ACTING TYPEF2 9F830031 FUSE, 3 AMP, 250V, 3AG (MDL) SLO-BLO TYPEJ14 51000018 CONN., HEADER, .025 SQ. POSTS, 10 PINJ15 51000020 CONN., HEADER, .025 SQ. POSTS, 20 PINJ16 56000010 CONN BNC PWB MTJ17 51000019 CONN., HEADER, .025 SQ. POSTS, 14 PINJ25 51000025 CONN., BREAKAWAY HEADER, .156 CENTERS, 5 POS.J26 51000025 CONN., BREAKAWAY HEADER, .156 CENTERS, 5 POS.K1 9R190061 RELAY, POWER DPDT 48V DC 5A, PC MTR1 1R751020 RES, 100K .25W 1% MFR2 1R731020 RES, 1K 1/4W 1% MFR3 1R431090 RES, 1K 11W 10PCT WWR4 1R431090 RES, 1K 11W 10PCT WWR5 1R751020 RES, 100K .25W 1% MFR6 1R751020 RES, 100K .25W 1% MFTB17A 50000005 CONN TERM BLK, 2 POS, FRONT INLET PC MTTB17B 50000005 CONN TERM BLK, 2 POS, FRONT INLET PC MTTB18A 50000005 CONN TERM BLK, 2 POS, FRONT INLET PC MTTB18B 50000005 CONN TERM BLK, 2 POS, FRONT INLET PC MTTB19A 50000007 CONN TERM BLK, 3 POS, FRONT INLET PC MTTB19B 50000007 CONN TERM BLK, 3 POS, FRONT INLET PC MTTB20A 50000007 CONN TERM BLK, 3 POS, FRONT INLET PC MTTB20B 50000007 CONN TERM BLK, 3 POS, FRONT INLET PC MTTJ1A 55000003 CONN, DIN PCB 48 POS RECEPTACLE
SD SERIES TRANSMITTER64 • • • •••SOUTHERN AVIONICS COMPANYTJ1B 55000003 CONN, DIN PCB 48 POS RECEPTACLETJ2A 55000003 CONN, DIN PCB 48 POS RECEPTACLETJ2B 55000003 CONN, DIN PCB 48 POS RECEPTACLEXA3A 55000003 CONN, DIN PCB 48 POS RECEPTACLEXA3B 55000003 CONN, DIN PCB 48 POS RECEPTACLEXA4A 55000003 CONN, DIN PCB 48 POS RECEPTACLEXA4B 55000003 CONN, DIN PCB 48 POS RECEPTACLEXA5A 55000003 CONN, DIN PCB 48 POS RECEPTACLEXA5B 55000003 CONN, DIN PCB 48 POS RECEPTACLEXF1 9F831000 FUSECLIP PC MTXF1A 9F833000 COVER, FUSE, QUICK FIT, BLUEXF2 9F831000 FUSECLIP PC MTXF2A 9F833000 COVER, FUSE, QUICK FIT, BLUEXJ14A 5A000030 LOCK, EJECTOR HOOK, SHORTXJ14B 5A000030 LOCK, EJECTOR HOOK, SHORTXJ15A 5A000030 LOCK, EJECTOR HOOK, SHORTXJ15B 5A000030 LOCK, EJECTOR HOOK, SHORTXJ17A 5A000030 LOCK, EJECTOR HOOK, SHORTXJ17B 5A000030 LOCK, EJECTOR HOOK, SHORT
SD SERIES TRANSMITTER 65 • • • •••SOUTHERN AVIONICS COMPANY SECTION 22.4 SLE10004 - Load CenterSDE10004 - SD SERIES LOAD CENTER DRAWER DIAGRAM
SD SERIES TRANSMITTER66 • • • •••Southern Avionics Company2.4.1 User Interface PCBSLP10001 USER Interface PCB This PCB is Located in the USER section which contains the AC and DC Power connection Terminal, the EC filtering modules, the System Fusing and the Modem. The USER Interface PCB combines in one central location circuitry which allows the Controller/Monitor control over Antenna Switching in Dual systems and DCAD functions(DC Automatic Disconnect). It also furnishes the Controller/Monitor with the input AC voltage level and current draw and the Battery system Voltage and current readings if DC is Optioned. It also provides convenient interconnect to the USER for MSK interfacing (Digital Global Positioning Systems such as used by the US coast Guard)In addition to this cross connects for voice input and phone line connections are present.
SD SERIES TRANSMITTER 67 • • • •••SOUTHERN AVIONICS COMPANY SECTION 2SLP10006 - Assembly, PCB, User InterfaceREFERENCEDESIGNATOR COMPONENT DESCRIPTIONC1 1C551010 CAP, CERAMIC, .1MFD. 50V, 10%C10 1C373300 CAP, 33M, 25V, TANTC11 1C373300 CAP, 33M, 25V, TANTC12 1C373300 CAP, 33M, 25V, TANTC13 1C366800 CAP, 6.8M 25V TANTC14 1C551010 CAP, CERAMIC, .1MFD. 50V, 10%C15 1C366800 CAP, 6.8M 25V TANTC16 1C561010 CAP, CERAMIC, 1MFD 50V 10%C17 1C551010 CAP, CERAMIC, .1MFD. 50V, 10%C2 1C373300 CAP, 33M, 25V, TANTC3 1C551010 CAP, CERAMIC, .1MFD. 50V, 10%C4 1C373300 CAP, 33M, 25V, TANTC5 1C621040 CAP, 100MF, 100V ALUMINUM ELECTROYLTICC6 1C631010 CAP, 1000MF, 25V ALUMINUM ELECTROLYTICC7 1C373300 CAP, 33M, 25V, TANTC8 1C373300 CAP, 33M, 25V, TANTC9 1C551010 CAP, CERAMIC, .1MFD. 50V, 10%CR1 1D400400 DIODE, RECT 400V 1A 30 DO41CR10 1D066200 DIODE, SW 80V .040ACR11 1D066200 DIODE, SW 80V .040ACR12 1D005200 DIODE, GR 50V .050ACR13 1D005200 DIODE, GR 50V .050ACR2 1D400400 DIODE, RECT 400V 1A 30 DO41CR3 1D400400 DIODE, RECT 400V 1A 30 DO41CR4 1D400400 DIODE, RECT 400V 1A 30 DO41CR5 1D400400 DIODE, RECT 400V 1A 30 DO41CR6 1D400400 DIODE, RECT 400V 1A 30 DO41CR7 1D540400 DIODE, RECT 400V 3A 267-02 SLCONCR8 1D540400 DIODE, RECT 400V 3A 267-02 SLCONCR9 1D440000 DIODE, ULTRAFAST RECOV RCT, 600V,4AJ1 56000010 CONN BNC PWB MTJ10A 50000005 CONN TERM BLK, 2 POS, FRONT INLET PC MTJ10B 50000005 CONN TERM BLK, 2 POS, FRONT INLET PC MTJ11 50000007 CONN TERM BLK, 3 POS, FRONT INLET PC MTJ12 50000007 CONN TERM BLK, 3 POS, FRONT INLET PC MTJ13 56000018 CONN, RIGHT ANGLE BNC PCB RECEPTACLE JACKJ14 56000018 CONN, RIGHT ANGLE BNC PCB RECEPTACLE JACKJ15 56000018 CONN, RIGHT ANGLE BNC PCB RECEPTACLE JACKJ16 56000018 CONN, RIGHT ANGLE BNC PCB RECEPTACLE JACK
SD SERIES TRANSMITTER68 • • • •••SOUTHERN AVIONICS COMPANYJ17A 50000005 CONN TERM BLK, 2 POS, FRONT INLET PC MTJ17B 50000005 CONN TERM BLK, 2 POS, FRONT INLET PC MTJ18 51000045 CONN, PC BOARD MOUNT RECEPTACLEJ19A 50000005 CONN TERM BLK, 2 POS, FRONT INLET PC MTJ19B 50000007 CONN TERM BLK, 3 POS, FRONT INLET PC MTJ19C 50000007 CONN TERM BLK, 3 POS, FRONT INLET PC MTJ2 56000010 CONN BNC PWB MTJ3 56000010 CONN BNC PWB MTJ4 56000010 CONN BNC PWB MTJ5 51000020 CONN., HEADER, .025 SQ. POSTS, 20 PINJ6A 50000007 CONN TERM BLK, 3 POS, FRONT INLET PC MTJ6B 50000007 CONN TERM BLK, 3 POS, FRONT INLET PC MTJ7A 50000007 CONN TERM BLK, 3 POS, FRONT INLET PC MTJ7B 50000007 CONN TERM BLK, 3 POS, FRONT INLET PC MTJ8 50000007 CONN TERM BLK, 3 POS, FRONT INLET PC MTJ9 50000007 CONN TERM BLK, 3 POS, FRONT INLET PC MTK1 9R190017 RELAY, SPDT, 12VDC, 30A, PCMTK2 9R190017 RELAY, SPDT, 12VDC, 30A, PCMTK3 9R190017 RELAY, SPDT, 12VDC, 30A, PCMTK4 9R190017 RELAY, SPDT, 12VDC, 30A, PCMTL1 1L000019 INDUCTOR, 220 UH @ 3.0 AMPQ1 1T344000 XSTR NPN 250V 15MHZ TO205ADQ2 1T344000 XSTR NPN 250V 15MHZ TO205ADR1 1R641820 RES, 18K .25W 10 PCT CFR10 1R738620 RES, 8.66K 1/4W 1% MFR11 1RV41041 POT, 10K .75W CMTR12 1R641820 RES, 18K .25W 10 PCT CFR13 1RV41041 POT, 10K .75W CMTR14 1RV41041 POT, 10K .75W CMTR15 1R641820 RES, 18K .25W 10 PCT CFR16 1R641820 RES, 18K .25W 10 PCT CFR17 1RV41041 POT, 10K .75W CMTR18 1RV41041 POT, 10K .75W CMTR19 1R641820 RES, 18K .25W 10 PCT CFR2 1R651020 RES, 100K .25W 10 PCT CFR20 1RV41041 POT, 10K .75W CMTR21 1R742221 RES, 22.1K .25W 1% MFR22 1R746120 RES, 61.9K .25W 1% MFR23 1RV41041 POT, 10K .75W CMTR24 1R746120 RES, 61.9K .25W 1% MFR3 1R633320 RES, 3.3K .25W 10 PCT CFR4 1R739010 RES, 9.09K 1/8W 1% MFR5 1R731020 RES, 1K 1/4W 1% MFR6 1R641820 RES, 18K .25W 10 PCT CFR7 1R651020 RES, 100K .25W 10 PCT CFR8 1R633320 RES, 3.3K .25W 10 PCT CFR9 1RV32030 POT, 2K .5W CMTT1 1X000018 TRANSFORMER, 115/230V DUAL PRIMARY, 1VA, MINATURE,
SD SERIES TRANSMITTER 69 • • • •••SOUTHERN AVIONICS COMPANY SECTION 2T2 SLE30520 ASY XFMER 120T 06 MATLU1 1U400100 IC QUAD 2-INP NORU2 1U324000 IC QUAD OP AMPU3 1U257602 IC VOLT RGLTR 3A 1.23V TO 37V ADJ STEP DOWNU4 1U324000 IC QUAD OP AMPU5 1U450400 IC, CMOS HEX VOLTAGE LEVEL SHIFTERU6 1U766200 IC CMOS 8 PIN V CONV
SD SERIES TRANSMITTER70 • • • •••SOUTHERN AVIONICS COMPANY2.5 SLM10005 - Control Monitor PanelSDM10005 - LOCAL CONTROL PANEL DIAGRAM
SD SERIES TRANSMITTER 71 • • • •••Southern Avionics Company SECTION 22.5.1 Local Control PCBSLP10016 – Local ControlThe Optional Local Control can be used as either a local or remote operating panel. The Local Control is a microprocessor-based (Motorola M68HC11) unit offering partial control over the controller / monitor and thereby the system. It offers similar functionality to a standard front panel on older equipment.Pushbuttons allow the user to select and or control the following:Primary Transmitter Select (1 or 2)Mode Select (ID, CONT or CARR)Transmitter Displayed (1 or 2)And view readings of: readings for:PA VoltagePA CurrentPA TemperatureForward PowerReflected PowerModulation%Audio Frequency (tone)RF FrequencyThe user can adjust or set the: Modulation Percentage RF Power output level RF ON/OFF Enable/Disable AlarmsSelect Local/Remote Control When one of any pushbuttons is pressed except RESET, the 6811 processor sends a data command to the Controller / Monitor through the serial communication port.RESET forces Local Panel re-initialization.The 7 segment led display update comes from the Controller / Monitor The displays provide the 3 following groups for reading:1. RF Power:Up to 4 digits display the Modulation%, forward power and reflected power.2. Power Amplifier (P.A.):Up to 3 digits Display the voltage, current and temperature.
SD SERIES TRANSMITTER72 • • • •••Southern Avionics Company3. Frequency:Up to 5 digits display the tone frequency (set) and RF frequency (measured).The LED indicators simply display the system status. The Local Control receives a command string from the Controller / Monitor and uses this to set the status indicators.The complex logic needed to for pushbutton control and display is accomplished using programmable gate-array logic.The Local Control provides two serial communication ports (RS-232 / RS-485). The RS-232 port is used locally for the Controller / Monitor serial port 1. The RS-485 port is connected remotely to the Controller / Monitor port 1.
SD SERIES TRANSMITTER 73 • • • •••SOUTHERN AVIONICS COMPANY SECTION 2SLP10016 - Assembly, PCB, Local ControlREFERENCEDESIGNATOR COMPONENT DESCRIPTION01 SRP10016 PCB, CONTROL MONITOR (COLD FIRE)C01 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC02 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC03 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC04 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC05 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC06 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC07 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC08 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC09 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC10 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC11 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC12 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC13 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC14 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC15 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC16 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC17 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC18 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC19 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC20 50000007 CONN TERM BLK, 3 POS, FRONT INLET PC MTC21 6C410000 CAP, 1206 1.0UF, 25V CERAMICC22 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC23 6C410000 CAP, 1206 1.0UF, 25V CERAMICC24 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC25 6C386300 CAP, 3216 10UF 6.3V TANTALUMC26 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC27 6C412240 CAP, 1206, 22PF, 100V, CERAMIC CHIPC28 6C412240 CAP, 1206, 22PF, 100V, CERAMIC CHIPC29 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC30 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC31 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC32 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC33 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC34 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC35 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC36 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC37 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC38 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC39 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC40 6C374700 CAP, 47 MFD, 16V, TANTALUM CHIPC41 6C374700 CAP, 47 MFD, 16V, TANTALUM CHIPC42 6C374700 CAP, 47 MFD, 16V, TANTALUM CHIPC43 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC44 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC45 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIP
SD SERIES TRANSMITTER74 • • • •••SOUTHERN AVIONICS COMPANYC46 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC47 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC48 6C451010 CAP, 1206, .1M, 50V, CERAMIC CHIPC49 6C422100 CAP, 1206 2.2UF, 50V CERAMICDS01 1DL17000 LED, HIGH EFFICIENCY RED, 2.0 MADS02 1DL17000 LED, HIGH EFFICIENCY RED, 2.0 MADS03 1DL17000 LED, HIGH EFFICIENCY RED, 2.0 MADS04 1DL17000 LED, HIGH EFFICIENCY RED, 2.0 MADS05 1DL17000 LED, HIGH EFFICIENCY RED, 2.0 MADS06 1DL17000 LED, HIGH EFFICIENCY RED, 2.0 MADS07 1DL17000 LED, HIGH EFFICIENCY RED, 2.0 MADS08 1DL17000 LED, HIGH EFFICIENCY RED, 2.0 MADS09 1DL17000 LED, HIGH EFFICIENCY RED, 2.0 MADS10 1DL17000 LED, HIGH EFFICIENCY RED, 2.0 MADS11 1DL17000 LED, HIGH EFFICIENCY RED, 2.0 MADS12 1DL17000 LED, HIGH EFFICIENCY RED, 2.0 MADS13 1DL17000 LED, HIGH EFFICIENCY RED, 2.0 MADS14 1DL17000 LED, HIGH EFFICIENCY RED, 2.0 MADS15 1DL17900 LED, LOW CURRENT, GREEN, 4MW, 2MADS16 1DL17900 LED, LOW CURRENT, GREEN, 4MW, 2MADS17 1DL17000 LED, HIGH EFFICIENCY RED, 2.0 MADS18 1DL17000 LED, HIGH EFFICIENCY RED, 2.0 MADS19 1DL17000 LED, HIGH EFFICIENCY RED, 2.0 MADS20 1DL17000 LED, HIGH EFFICIENCY RED, 2.0 MADS21 1DL17000 LED, HIGH EFFICIENCY RED, 2.0 MADS22 1DL17000 LED, HIGH EFFICIENCY RED, 2.0 MADS27 1DL17000 LED, HIGH EFFICIENCY RED, 2.0 MADS28 1DL17000 LED, HIGH EFFICIENCY RED, 2.0 MADS29 1DL17000 LED, HIGH EFFICIENCY RED, 2.0 MADS30 1DL17000 LED, HIGH EFFICIENCY RED, 2.0 MADS31 1DL17000 LED, HIGH EFFICIENCY RED, 2.0 MADS32 1DL17000 LED, HIGH EFFICIENCY RED, 2.0 MAJ21 51000042 CONN, BREAKAWAY HEADER 156 CENTER 8 POSJ22 51000030 CONN., HEADER, BREAKAWAY, 10 POS DUAL ROWJ23 51000018 CONN., HEADER, .025 SQ. POSTS, 10 PINR01 6R224720 RES, 1206 4700 OHM 1/4W THICK FILMR02 6R224720 RES, 1206 4700 OHM 1/4W THICK FILMR03 6R224720 RES, 1206 4700 OHM 1/4W THICK FILMR04 6R224720 RES, 1206 4700 OHM 1/4W THICK FILMR06 6R224720 RES, 1206 4700 OHM 1/4W THICK FILMR07 6R224720 RES, 1206 4700 OHM 1/4W THICK FILMR08 6R224720 RES, 1206 4700 OHM 1/4W THICK FILMR09 6R224720 RES, 1206 4700 OHM 1/4W THICK FILMR10 6R224720 RES, 1206 4700 OHM 1/4W THICK FILMR11 6R224720 RES, 1206 4700 OHM 1/4W THICK FILMR12 6R224720 RES, 1206 4700 OHM 1/4W THICK FILMR13 6R224720 RES, 1206 4700 OHM 1/4W THICK FILMR14 6R224720 RES, 1206 4700 OHM 1/4W THICK FILMR15 6R224720 RES, 1206 4700 OHM 1/4W THICK FILMR16 6R224720 RES, 1206 4700 OHM 1/4W THICK FILMR17 6R224720 RES, 1206 4700 OHM 1/4W THICK FILMR18 6R231010 RES., 1206, 1K, 1/4W, 5%, THICK FILM CHIPR19 6R224720 RES, 1206 4700 OHM 1/4W THICK FILMR20 6R224720 RES, 1206 4700 OHM 1/4W THICK FILM
SD SERIES TRANSMITTER 75 • • • •••SOUTHERN AVIONICS COMPANY SECTION 2R21 6R224720 RES, 1206 4700 OHM 1/4W THICK FILMR22 6R231020 RES, 1206, 10M 1/4W 5% THICK FILMR23 6R211020 RES, 1206 10K, 1/4W 5% THICK FILMR24 6R211020 RES, 1206 10K, 1/4W 5% THICK FILMR25 6R211020 RES, 1206 10K, 1/4W 5% THICK FILMR26 6R211020 RES, 1206 10K, 1/4W 5% THICK FILMR27 6R224720 RES, 1206 4700 OHM 1/4W THICK FILMR28 6R221202 RES, 1206, 120 OHM 1/4W 5% THICK FILMR29 6R221202 RES, 1206, 120 OHM 1/4W 5% THICK FILMS01 9S901023 SWITCH, MOMENTORY, PUSH BUTTON SPSTS02 9S901023 SWITCH, MOMENTORY, PUSH BUTTON SPSTS03 9S901023 SWITCH, MOMENTORY, PUSH BUTTON SPSTS04 9S901023 SWITCH, MOMENTORY, PUSH BUTTON SPSTS05 9S901023 SWITCH, MOMENTORY, PUSH BUTTON SPSTS06 9S901023 SWITCH, MOMENTORY, PUSH BUTTON SPSTS07 9S901023 SWITCH, MOMENTORY, PUSH BUTTON SPSTS08 9S901023 SWITCH, MOMENTORY, PUSH BUTTON SPSTS09 9S901023 SWITCH, MOMENTORY, PUSH BUTTON SPSTS10 9S901023 SWITCH, MOMENTORY, PUSH BUTTON SPSTS11 9S901023 SWITCH, MOMENTORY, PUSH BUTTON SPSTS12 9S901023 SWITCH, MOMENTORY, PUSH BUTTON SPSTS13 9S901023 SWITCH, MOMENTORY, PUSH BUTTON SPSTS14 9S901023 SWITCH, MOMENTORY, PUSH BUTTON SPSTS15 9S901023 SWITCH, MOMENTORY, PUSH BUTTON SPSTS16 9S901023 SWITCH, MOMENTORY, PUSH BUTTON SPSTS17 9S901023 SWITCH, MOMENTORY, PUSH BUTTON SPSTS18 9S900031 SWITCH, SPST ROCKER RAISED 4 POSTB21A 50000007 CONN TERM BLK, 3 POS, FRONT INLET PC MTTB21B 50000007 CONN TERM BLK, 3 POS, FRONT INLET PC MTU01 6U451101 IC, CMOS HIGH SPEED LOGIC BCD TO 7 SEG 16 PINU02 6RD31023 RESISTOR, NETWORK 1K, 16 PIN THICK FILMU03 9L400000 DISPLAY, NUMERIC 0.3 (RED)U04 6U451101 IC, CMOS HIGH SPEED LOGIC BCD TO 7 SEG 16 PINU05 6RD31023 RESISTOR, NETWORK 1K, 16 PIN THICK FILMU06 9L400000 DISPLAY, NUMERIC 0.3 (RED)U07 6U451101 IC, CMOS HIGH SPEED LOGIC BCD TO 7 SEG 16 PINU08 6RD31023 RESISTOR, NETWORK 1K, 16 PIN THICK FILMU09 9L400000 DISPLAY, NUMERIC 0.3 (RED)U10 6U451101 IC, CMOS HIGH SPEED LOGIC BCD TO 7 SEG 16 PINU11 6RD31023 RESISTOR, NETWORK 1K, 16 PIN THICK FILMU12 9L400000 DISPLAY, NUMERIC 0.3 (RED)U13 6U451101 IC, CMOS HIGH SPEED LOGIC BCD TO 7 SEG 16 PINU14 6RD31023 RESISTOR, NETWORK 1K, 16 PIN THICK FILMU15 9L400000 DISPLAY, NUMERIC 0.3 (RED)U16 6U451101 IC, CMOS HIGH SPEED LOGIC BCD TO 7 SEG 16 PINU17 6RD31023 RESISTOR, NETWORK 1K, 16 PIN THICK FILMU18 9L400000 DISPLAY, NUMERIC 0.3 (RED)U19 6U451101 IC, CMOS HIGH SPEED LOGIC BCD TO 7 SEG 16 PINU20 6RD31023 RESISTOR, NETWORK 1K, 16 PIN THICK FILMU21 9L400000 DISPLAY, NUMERIC 0.3 (RED)U22 6U451101 IC, CMOS HIGH SPEED LOGIC BCD TO 7 SEG 16 PINU23 6RD31023 RESISTOR, NETWORK 1K, 16 PIN THICK FILMU24 9L400000 DISPLAY, NUMERIC 0.3 (RED)U25 6U451101 IC, CMOS HIGH SPEED LOGIC BCD TO 7 SEG 16 PIN
SD SERIES TRANSMITTER76 • • • •••SOUTHERN AVIONICS COMPANYU26 6RD31023 RESISTOR, NETWORK 1K, 16 PIN THICK FILMU27 9L400000 DISPLAY, NUMERIC 0.3 (RED)U28 6U451101 IC, CMOS HIGH SPEED LOGIC BCD TO 7 SEG 16 PINU29 6RD31023 RESISTOR, NETWORK 1K, 16 PIN THICK FILMU30 9L400000 DISPLAY, NUMERIC 0.3 (RED)U31 6U451101 IC, CMOS HIGH SPEED LOGIC BCD TO 7 SEG 16 PINU32 6RD31023 RESISTOR, NETWORK 1K, 16 PIN THICK FILMU33 9L400000 DISPLAY, NUMERIC 0.3 (RED)U34 6U451101 IC, CMOS HIGH SPEED LOGIC BCD TO 7 SEG 16 PINU35 6RD31023 RESISTOR, NETWORK 1K, 16 PIN THICK FILMU36 9L400000 DISPLAY, NUMERIC 0.3 (RED)U37 6U037300 IC, OCTAL TRANSPARENT D-TYPE LATCHESU38 6RD31023 RESISTOR, NETWORK 1K, 16 PIN THICK FILMU39 6U456401 IC, PROGRAMMABLE, 44 PIN TQFPU40 6U037300 IC, OCTAL TRANSPARENT D-TYPE LATCHESU41 6RD31023 RESISTOR, NETWORK 1K, 16 PIN THICK FILMU42 6U037300 IC, OCTAL TRANSPARENT D-TYPE LATCHESU43 6RD31023 RESISTOR, NETWORK 1K, 16 PIN THICK FILMU44 6U456401 IC, PROGRAMMABLE, 44 PIN TQFPU45 6U037300 IC, OCTAL TRANSPARENT D-TYPE LATCHESU46 6RD31023 RESISTOR, NETWORK 1K, 16 PIN THICK FILMU47 6U509000 IC, CHANNEL ANALOG MULTIPLEXERU48 6U325301 IC, DUAL MULTIPLEXER/DEMIULPLEXER BUS SWITCHU49 1U687110 IC HCMOS 8-BIT MICONTRU50 6U037300 IC, OCTAL TRANSPARENT D-TYPE LATCHESU51 6U742212 IC, DUAL INVERTING, NON-INVERTING OCTAL BUFFERU52 6U037300 IC, OCTAL TRANSPARENT D-TYPE LATCHESU53 6U742212 IC, DUAL INVERTING, NON-INVERTING OCTAL BUFFERU54 6U037300 IC, OCTAL TRANSPARENT D-TYPE LATCHESU55 6U742212 IC, DUAL INVERTING, NON-INVERTING OCTAL BUFFERU56 6U742212 IC, DUAL INVERTING, NON-INVERTING OCTAL BUFFERU57 6U037300 IC, OCTAL TRANSPARENT D-TYPE LATCHESU58 6U037300 IC, OCTAL TRANSPARENT D-TYPE LATCHESU59 6U742212 IC, DUAL INVERTING, NON-INVERTING OCTAL BUFFERU60 6U037300 IC, OCTAL TRANSPARENT D-TYPE LATCHESU61 6U020800 IC, CMOS RS-232 DRIVER/RECEIVERU62 1U751790 IC, DIFF DRIVER/RECEIVER PAIR, 8 DIPW01 304A0000 WIRE 22 AWG SOLID TINNEDW02 304A0000 WIRE 22 AWG SOLID TINNEDW03 304A0000 WIRE 22 AWG SOLID TINNEDXJ23A 5A000030 LOCK, EJECTOR HOOK, SHORTXJ23B 5A000030 LOCK, EJECTOR HOOK, SHORTXU49 9S581002 SOCKET, PLCC, 52 PINY1 1Y491520 CRYSTAL, 4.9152 MHZ
SD SERIES TRANSMITTER 77 • • • •••Southern Avionics Company SECTION 22.5.2 Audio PCBSLP10020 OPTIONAL AUDIO PCB (AWOS) The Audio PCB is an OPTIONAL addition to the normal system which allows the user to broadcast AWOS announcements. The Option is implemented as a plug in piggyback board to the Digital I/O PCB and consists of four sections as follows:Voice AmplifierAutomatic Gain ControlChebychev Passband Filter Voice DetectorThe Voice amplifier takes the nominal -17dBm signal level and boosts it to a level useable by the AGC section.It is common mode balanced and its Gain is adjustable.The AGC circuit is responsible for modulation limiting. It is adjusted to "capture" the level at -17dBm and output a constant modulation level to the Digital I/O PWM section up to levels exceeding +10 dBm. This section prevents inadvertent over modulation of the voice signal, and is necessary since the Controller / Monitor has no control over user input. The Chebychev Passband filter is designed for 300 to 3000 Hz. The output at 4000 Hz is down more than 45 dB ensuring any out of band audio signals from the USER will not cause adjacent channel interference.The Voice Detector has two functions. It detects the presence of an announcement sequence and automatically attenuates the Keying tone level down to 20% modulation. The announcement level is summed with the Keying tone level and set to achieve 95% composite modulation. This action prevents overmodulation and allows the announcement to be heard over the beacon Morse code IDENT tones. It also signals the Controller /Monitor which in turn temporarily suspends Modulation Alarms since the IDENT tone level is dropped below the alarm threshold.
SD SERIES TRANSMITTER78 • • • •••Southern Avionics Company2.5.1 Filter/Bridge PCBSLP10002 - The Filter/Bridge PCBThe Filter/Bridge includes a broadband toroidal impedance transformer, a seven pole Butterworth low pass filter, a broadband RF power bridge, modulation envelope detector and associated level sampling and fault latching circuitry.The Impedance transformer receives as input the RF Power Amplifiers Class D output and impedance matches it to the 50Ohm Butterworth Low Pass Filter, which is configured for optimum characteristics via simple jumpers for the frequency band in use. The sinusoidal 50Ohm output of the Filter is Fed then fed through the RF power bridge which reports readings of Forward and Reflected RF Power to the Controller / Monitor. The Controller / Monitor then normalizes and calibrates the power curve and calculates SWR. Fault latches are also set up to report High reflected power or RF over-current conditions for immediate action via a fault interrupt structure. A sample of the final RF output envelope is detected and sent back to the Controller / Monitor where other circuitry derives Vmax/Vmin information for modulation percentage calculation via Controller / Monitor firmware.
SD SERIES TRANSMITTER 79 • • • •••SOUTHERN AVIONICS COMPANY SECTION 2SLP10002/01 - Assembly, PCB Filter/Bridge (Standard Band)REFERENCEDESIGNATOR COMPONENT DESCRIPTION01 SLP10002 PCB, FILTER / BRIDGEC01 1C135190 CAP, 5100P 1000V DSMC02 1C131090 CAP 1000P 1000V DSMC03 1C132090 CAP, 2000P 1000V DSMC04 1C136890 CAP, 6800P 1000V DSMC05 1C126890 CAP, 680P 1000V DSMC06 1C132090 CAP, 2000P 1000V DSMC07 1C133390 CAP, 3300P 1000V DSMC08 1C138290 CAP, 8200P 1000V DSMC09 1C141090 CAP, 10,000P 1000V DSMC10 1C132090 CAP, 2000P 1000V DSMC11 1C131090 CAP 1000P 1000V DSMC12 1C133990 CAP, 3900P 1000V DSMC13 1C135190 CAP, 5100P 1000V DSMC14 1C135190 CAP, 5100P 1000V DSMC15 1C131090 CAP 1000P 1000V DSMC16 1C136890 CAP, 6800P 1000V DSMC17 1C132090 CAP, 2000P 1000V DSMC18 1C126890 CAP, 680P 1000V DSMC19 1C132090 CAP, 2000P 1000V DSMC20 1C133390 CAP, 3300P 1000V DSMC21 1C551010 CAP, CERAMIC, .1MFD. 50V, 10%C22 1C073310 CAP, 33M 50V ELCTLTC23 1C551010 CAP, CERAMIC, .1MFD. 50V, 10%C24 1C551010 CAP, CERAMIC, .1MFD. 50V, 10%C25 1C551010 CAP, CERAMIC, .1MFD. 50V, 10%C26 1C073310 CAP, 33M 50V ELCTLTC27 1C551010 CAP, CERAMIC, .1MFD. 50V, 10%C28 1C124770 CAP, 470P 500V DSMC29 1C103070 CAP, 3.0PF 500V DSMC30 1C103070 CAP, 3.0PF 500V DSMC31 1C551010 CAP, CERAMIC, .1MFD. 50V, 10%C32 1C551010 CAP, CERAMIC, .1MFD. 50V, 10%C33 1C122270 CAP, 220P 500V DSMC34 1C122270 CAP, 220P 500V DSMC35 1C621040 CAP, 100MF, 100V ALUMINUM ELECTROYLTICC36 1C631010 CAP, 1000MF, 25V ALUMINUM ELECTROLYTICCR1 1D005200 DIODE, GR 50V .050ACR2 1D005200 DIODE, GR 50V .050ACR3 1D005200 DIODE, GR 50V .050ACR4 1D440000 DIODE, ULTRAFAST RECOV RCT, 600V,4AL01 SLE55480 CSY COIL FLTR 250W 22T .D :10L02 SLE45690 ASY COIL SPA FLTR :10
SD SERIES TRANSMITTER80 • • • •••SOUTHERN AVIONICS COMPANYL03 SLE45700 ASY COIL SPA FLTR :10L04 SLE55490 ASY COIL FLTR 250W 22T .D:10L05 1L000017 INDUCTOR, MOLDED, SHILDED RF, 33000 uFL06 1L000017 INDUCTOR, MOLDED, SHILDED RF, 33000 uFL07 1L000017 INDUCTOR, MOLDED, SHILDED RF, 33000 uFL08 1L000019 INDUCTOR, 220 UH @ 3.0 AMPP01 51000041 CONN, HEADER 48 PIN PLUG, RT ANGLEP02 51000041 CONN, HEADER 48 PIN PLUG, RT ANGLER01 1R141820 RES, 18K 1PCT .25W MFR02 1R731020 RES, 1K 1/4W 1% MFR03 1R731020 RES, 1K 1/4W 1% MFR04 1R751020 RES, 100K .25W 1% MFR05 1R761020 RES, 1 MEG OHM 1/4W 1% MFR06 1R741020 RES, 10K 1/4W 1% MFR07 1RV41041 POT, 10K .75W CMTR08 1R751020 RES, 100K .25W 1% MFR09 1R761020 RES, 1 MEG OHM 1/4W 1% MFR10 1R741020 RES, 10K 1/4W 1% MFR11 1RV41041 POT, 10K .75W CMTR12 1R741020 RES, 10K 1/4W 1% MFR13 1R751020 RES, 100K .25W 1% MFR14 1R141820 RES, 18K 1PCT .25W MFR15 1R731020 RES, 1K 1/4W 1% MFR16 1R731020 RES, 1K 1/4W 1% MFR17 1R734721 RES, 4.7K 1/4W 1 % MFR18 1R751020 RES, 100K .25W 1% MFR19 1R741020 RES, 10K 1/4W 1% MFR20 1R741020 RES, 10K 1/4W 1% MFR21 1RV15030 POT, 50 OHM 1/2W TOP ADJUSTR22 1RV15030 POT, 50 OHM 1/2W TOP ADJUSTR23 1R729320 RES, 931 OHM 1/4W 1% MFR24 1R738220 RES, 8.2K 1/4W 1 % MF AXIALS01 9S902004 SWITCH, SPST DIP KEYBOARDT1 SLE10014 ASSY, TRANSFORMER IMPEDANCE FILTER/BRIDGET2 1X000038 TRANSFORMER, CURRENT SENSE ENCAPSULATEDU01 1U324000 IC QUAD OP AMPU02 1U339000 IC LOW POWER OFFSET VOLTAGE QUAD COMPARATORU03 1U404300 IC QUAD NOR R-S LCHU04 1U257602 IC VOLT RGLTR 3A 1.23V TO 37V ADJ STEP DOWNXU4 9H180001 HEATSINK, LOW PROFILE, FOR T0-220XU4A 9I550000 INSULATOR, TERMASIL, FOR T0-220
SD SERIES TRANSMITTER 81 • • • •••SOUTHERN AVIONICS COMPANY SECTION 33 INSTALLATION AND OPERATIONINSTALLATION1.0 TEST EQUIPMENT REQUIRED 1.1 Calibrated 3 1/2 Digit Voltmeter1.2 Calibrated Dual Trace Oscilloscope1.3 Calibrated Frequency Counter (accurate to ± 1 Hz)1.4 250 Watt, 50Ω Non-Inductive dummy load 2.0 UNPACKING & MOUNTING2.1 Remove the Transmitter cabinet from its shipping container , open the front panel, and remove any shipping material that may be included. Make a careful inspection looking for obvious shipping damage. Remove any foreign material that may have shaken loose. 2.2 Some PC boards are shipped in separate boxes. Individually unpack and inspect them for any obvious shipping damage. Check the connectors for any bent pins. Be sure to do this before attempting to plug any of the PCB's in.2.3 Assuming the transmitter is not to be pre-tested in a lab facility, physically mount the Cabinet to its permanent structure. See drawing SDE10018, Page 5, for mounting hole dimensions.3.0 PLUG INS3.1 See the System installation drawings, SDF31002 , Pages 9 and 10, for additional information pertaining to the following steps. 3.2 Remove the front panel exposing the Controller/ Monitor, Transmitter 1and User Sections3.3 Remove the Controller Monitor cover panel and set it aside3.4 Verify that the Monitor/Controller, Analog I/O and Digital I/O are installed and well seated in the correct slots according to the drawing.3.5 Unpack the smaller 3U sized Low Voltage Power supply PCB (SLP10017) and examine it closely for any damage.3.6 Check JP1 and JP2 on this PCB and verify they set correctly for the input voltage being used.3.7 Refer to Drawing SDF31002, Page 10, and insert the LVPS PCB (SLP10017) into the left-most slot. The board insertion must be exactly as shown in the drawing or serious damage may occur. 3.8 Remove the Transmitter 1 cover panel3.9 Unpack the Transmitter 1 PCBs and examine them closely for any damage3.10 Install the RF Amplifier PCB (SLP10001) in slot #2 or right next to the already installed Filter /Bridge PCB (SLP10002) . See Drawing JP1 JP2115 VAC A B230VAC B A
SD SERIES TRANSMITTER82 • • • •••SOUTHERN AVIONICS COMPANY3.11 Install the PA Power Supply PCB (SLP10003) in slot # 3 or the last slot from the right.3.12 On the right hand side of the Section, look at the RF Mother Board (SLP10004) and verify the transformer connectors are seated properly.3.13 Replace the Transmitter 1 cover panel4.0 USER WIRING4.1 The USER main AC breaker should be rated for 30 amps4.2 Remove the mounting screws from the USER section and pull it forward on its mounting guides sufficient to allow access to the bottom rear cabling ports.4.3 Utilizing the (SLM 25000/25040) installation kit route the AC, DC, and Coupler wiring into the bottom rear access holes. 4.4 Trim the excess wiring length to neatly reach the their individual connection points as cited below4.5 Terminate the ends of the wires using the connectors supplied with the installation kit.4.6 Connect a good Earth ground to the brass grounding terminal located on the bottom of the Cabinet4.7 Locate the Main Power Connector TB1 4.8 Connect AC mains L1 to user section TB1-1 (115/230 VAC Hot )4.9 Connect AC mains L2 to user section TB1-2 (115/230 VAC Neutral or Hot4.10 Connect AC mains GND to user section TB1-3 ( AC Power GND )4.11 Connect the Battery I (current charge/discharge) Sample shielded cable center wire to TB1-4 4.12 Connect the Battery I (current charge/discharge) Sample shield to TB1-3 (GND)4.13 Connect 48V Battery + to TB1-5 4.14 Connect 48V Battery - to TB1-64.15 Connect Modular telephone jack to Line In on the US Robotics modem.4.16 Locate the USER Interface PCB. 4.17 If no modular style plug is available, a 4 wire conventional drop cable may be connected to TB8 ( old J17) and the short modular jumper furnished by US Robotics connected from LINE-IN in of the modem to J65 (old J18 ). The connections are: Tip or Green wire to TB8-1 Ring or Red wire to TB8-2 Sleeve or Yellow wire to TB8-3 Ground or Black wire to TB8-44.18 Connect the coupler +12V supply wire to TB4 -3 4.19 Connect the coupler GND wire to TB4-24.20 If the system uses MSK externally supplied RF signal connect MSK-1 to J61(old J13) and MSK-2 to J59 (old J14)4.21 Dress and tie wrap the wires back to the end of the user panel.4.22 Slowly push the USER drawer back in place.
SD SERIES TRANSMITTER 83 • • • •••SOUTHERN AVIONICS COMPANY SECTION 34.23 If a 50 ohm Dummy load is available connect it to The N type RF output connector on the bottom of the cabinet for initial testing and operational verification.5.0 PC HOOKUP AND SOFTWARE INSTALLATION5.1 A Desk-top or Laptop PC capable of running either Windows 98 or later version Microsoft operating system is suitable for use as a local or remote control platform. Set the PC up near the transmitter.5.2 Connect one end of a null modem RS232 cable or a standard RS232 cable with a null modem adapter to SERIAL PORT #1 on the PC5.3 Locate the left hand Controller/Monitor PCB which is the second board from the left in the controller 3U Section .5.4 Connect the other end of the RS232 cable to the Local Control Port, a DB9 connector on the front of the USER panel an the right hand side. (see drawing SDE 10004)5.5 Start the computer and while it is booting up, locate the USER software which is included with each system shipped in an appropriately labeled protective package.5.6 Load the software on the PC, following the enclosed instruction sheet which will alert you to any last minute changes that need attention.5.7 Run the software and the SD DIGITAL TRANSMITTER window will open. 5.8 You will be required to enter a password. If no password is entered no operational changes will be allowed. Monitoring, however, will still be available.6.0 CONTROLLER/MONITOR POWER UP
SD SERIES TRANSMITTER84 • • • •••SOUTHERN AVIONICS COMPANY6.1 See drawing SDE100046.2 Turn on the Site AC breaker.6.3 On the USER panel in the MAIN POWER section , Switch AC to ON and observe the switch lights up.6.4 Leave the DC switch OFF for now.6.5 On the USER panel in the AC POWER DISTRIBUTION section , Switch Controller to ON and observe the switch lights up.6.6 Observe the illumination of DS1 and DS2 the two green LEDS on the Digital I/O PCB (SLP10009) indicating the presence of +5 and +12 volts respectively. 6.7 On the Low Voltage Power Supply PCB (SLP10017 ) Meter the following to GND (TP0) and verify the tolerances6.7.1 TP1 = 5.0 ± 0.25 VDC6.7.2 TP2 = -11.4 ± 0.6 VDC6.7.3 TP3 = 12.0 ± 0.6 VDCNOTE: If any of these voltages are out of tolerance and require either repair or adjustment, a modified system alignment will be required before proceeding. See the Maintenance section for more details.7.0 SYSTEM SITE CONFIGURATION 7.1 On the PC in the SD DIGITAL TRANSMITTER window just below the Open COM control there is a pull down menu to select a different serial port if desired. Click on the port you want then Click on Open COM.7.2 If opening the port was successful a bell will sound and the name of the control will change to CLOSE COMNOTE:Clicking again will close the Port so be careful not to double click. Click CLOSE COM only when you are finished communicating with the system7.3 The Morse Code ID sequence, Code Timing, Key tone Frequency, and RF frequency must now all be set according to the Site License. On the PC in the SD DIGITAL TRANSMITTER window Click on Set up.
SD SERIES TRANSMITTER 85 • • • •••SOUTHERN AVIONICS COMPANY SECTION 37.4 From the menu select Site Configuration 7.5 A popup window called Transmitter 1 Site Configuration will open. In this window you may choose to add a custom configuration to the selection list or simply accept the default profile and modify it as follows:
SD SERIES TRANSMITTER86 • • • •••SOUTHERN AVIONICS COMPANY7.5.1 To modify the existing default setting 7.5.1.1. Click in the Identifier white space and change the ID to the new ID then click Set.7.5.1.2. The new ID will be sent to the CF and the response window will read PASS when it is accepted7.5.1.3. Click in the Quick Edit RF Frequency white space, enter the new frequency then click on Set RF7.5.1.4. The new RF Frequency will be sent to the CF and the response window will read PASS when it is accepted7.5.2 To Add a new Custom configuration Click on Add and a popup window will appear. 7.5.2.1. Enter a custom name for this configuration. (Note that pressing enter will have no effect )7.5.2.1.1. Select one of the 2 default tone frequencies or enter any frequency manually between 300 and 3000 Hz. 7.5.2.1.2. Enter the RF frequency for this site.
SD SERIES TRANSMITTER 87 • • • •••SOUTHERN AVIONICS COMPANY SECTION 37.5.2.1.3. Mark/Space timing changes and tone enables are optional. They will default to the industry standard however they can be customized for special test sequences or minor adjustments necessary in certain countries. Simply change the values to those desired by clicking in the white space and entering a new value.7.5.2.1.4. Click Save. The window will close returning to the Site Configuration window. The saved configuration will be in the custom window 7.5.2.1.5. Click on Set ALL and the new configuration will be sent to the Controller/Monitor7.6 Having chosen and accomplished one of the above methods, close the Transmitter 1 Site Configuration window returning to the SETUP window.7.7 In the Setup window, click on General, opening the general setup window 7.7.1 The PC control and Local Control sections allow the USER to define the fineness of control. The Maximum Power is Factory set to coincide with the maximum power allowed by the site. A lower power may be entered if the user chooses to run at a lower power. Firmware settings will not allow more power to be output than what was licensed. Accept the defaults for now and click on the X to exit 7.8 In the Setup window, click on Primary Transmitter, opening the selection window
SD SERIES TRANSMITTER88 • • • •••SOUTHERN AVIONICS COMPANY7.8.1 Accept the Default setting. If this were a Dual site you could choose which transmitter is Primary here. Just Click on Set to return to the Set up menu 7.9 In the Setup window, click on Shutdown , opening the shutdown option window
SD SERIES TRANSMITTER 89 • • • •••SOUTHERN AVIONICS COMPANY SECTION 37.9.1 This section allows you to set the criterion for some of the shutdown alarms and to enable or disable them for test purposes. Since we will be testing a new installation, click to remove the checkmarks from VSWR, Power, No Tone, and Continuous, thus disabling them. Click on Set returning to the Setup window7.10 In the Setup window, click on Warning/Error opening the warning /error list.
SD SERIES TRANSMITTER90 • • • •••SOUTHERN AVIONICS COMPANY7.10.1 This list affords the USER a way to customize the error messages, re-writing them their native language for instance. You can change these now or accept the default messages. Click on OK to exit back to Setup7.11 In the Setup window, click on Password opening the password window.7.11.1 When the installation is complete a password should be entered here securing the site from un-authorized access to system configuration while still allowing casual monitoring.
SD SERIES TRANSMITTER 91 • • • •••SOUTHERN AVIONICS COMPANY SECTION 37.11.2 For now no action is required so just press X to exit.7.12 Press X to escape out of the Set up menu.7.13 Verify the Correct Station ID, RF Frequency and Tone Frequency is displayed in the "Present Setting " section of the main screen. The middle monitoring section of the main screen will be indicating N/A in all of its display areas. (white boxes)7.14 Having followed all the preceding steps the system should now be configured with the proper parameters to allow an operational check8.0 OPERATIONAL CHECKNote: The SD 250 is a Direct Digital Synthesis (DDS) based microprocessor controlled transmitter operating class D through broadband Butterworth filters. The system is quite adjustment free because of this , however there are checkpoints that should be verified with Calibrated test equipment to ensure proper operation. 8.1 Turn the AC POWER DISTRIBUTION TRANSMITTER 1 Switch (S4) on. It should illuminate. 8.2 On the PC click on Monitor, then select Transmitter #1 and click on Ready. This signals the Controller /Monitor to begin sending transmitter data to the PC.8.3 Click on Power and verify the following:8.3.1 The High Voltage ON relay and the inrush circuit relay on the PA Power Supply PCB in the RF section will activate in sequence8.3.2 DS2 on the RF mother board will illuminate indicating the presence of High Voltage. 8.3.3 DS1 on the PA Power Supply PCB will illuminate indicating the presence of High Voltage.8.3.4 The data fields on the PC main window screen will fill with system wide information similar to that shown in the following screen capture
SD SERIES TRANSMITTER92 • • • •••SOUTHERN AVIONICS COMPANY8.3.5 Note that DC Voltage, DC Current and Antenna Current readings are not shown. They are signals fed in from external sources and are optional. They must be with their own separate documentation. 8.3.6 Modulation, Forward Power, Reflected Power and VSWR fields will have arbitrary values at this time. This is normal8.4 Frequency checks8.4.1 Connect a calibrated frequency counter to TP10 on the front of the RF Power Amplifier (SLP10001). This signal is the RF output from the Controller/Monitor DDS.8.4.2 Verify that the frequency reads the site frequency ± 100 parts per million or in the case of the screen shown, 320,000 ± 32 Hz . Note: Regulations state 100 PPM is allowed if the Power is less than 200 watts, therefore to calculate the maximum deviation the formula would be as follows: (Operating Frequency / 1,000,000) X 100 8.4.3 If the frequency is not in tolerance calibration must be run as follows.
SD SERIES TRANSMITTER 93 • • • •••SOUTHERN AVIONICS COMPANY SECTION 3Note:Normally the DDS section is extremely accurate (± 3Hz) by itself. However a correction coefficient based on precision test equipment is generated at the factory and stored in the Controller /Monitor boards NVRAM. This Number is used to control the DDS output and will correct the frequency further. At the same time the on board frequency counter is also corrected to bring the test equipment , the output and the input into agreement. The Calibration routine should only be run if a component of the system needs replacement or if precision test equipment indicates the system is out of tolerance.8.4.4 Click on Setup (see section 7.3) then click on Calibration opening the Frequency / Power / Modulation calibration window. NEED NEW WINDOW BELOW WHICH ADDS MANUAL MODE TO MATCH PROC!!8.4.5 Type in the frequency of operation in the window labeled "Enter Frequency"8.4.6 Click on Monitor and wait until the reading in the Local Read window stabilizes (about 10 seconds)8.4.7 A choice is now available as to the method of calibration. If Auto is clicked The controller / monitor will recalibrate the output frequency based on its own internal counter which itself is corrected at the factory. If Manual is selected the frequency as read by precision external equipment must be input and the correction will be based on that . (we will use the latter here.)
SD SERIES TRANSMITTER94 • • • •••SOUTHERN AVIONICS COMPANY8.4.8 Click on Manual and a popup window will appear. Enter the external frequency counters readout and click OK8.4.9 After a few moments verify that the frequency now being read on the PC monitor agrees with the Test equipment. This completes Frequency calibration.8.4.10 Close the Calibration and the Setup windows8.5 RF Power output checks8.5.1 Scope the output of the transmitter at the Dummy Load8.5.2 On the PC main window again click on Control and verify a popup window as follows:8.5.3 Manually enter or adjust the slider for 10 watts RF output power.8.5.4 Verify the power output level agrees with the PC levels with the Scope using the formula P = (Vpp÷2.828)² / RDUMMY LOAD (a direct reading calibrated power meter is also suitable). The tolerance is the same as a portable Bird wattmeter, 5%8.5.5 Increase power in 5 or 10 watt steps up to the maximum allowable power verifying the power read on the test equipment agrees with the PC readout to a 5% tolerance.8.6 Power Calibration8.6.1 If the Output Power is out of tolerance a power calibration will be required. Click on Setup, then Click on Calibration
SD SERIES TRANSMITTER 95 • • • •••SOUTHERN AVIONICS COMPANY SECTION 3WARNING ! These Calibrations are normally done at the factory using Calibrated precision test equipment and a precision Dummy Load. A calibrated Scope and a non reactive dummy load of exact known value must be used. The power calibration cannot be done connected to the radiating system. Any attempt to do so will degrade system monitoring performance.8.6.2 In the power section select a power range equal to or less than the maximum allowable power.8.6.3 In the Dummy Load window enter the EXACT resistance value of the dummy load connected and click on Set. 8.6.4 The Voltage the Scope should read will show up in the Calculate For window for your convenience.8.6.5 Observing the Scope RF Vpp value, adjust the Power Factor slider until the scope reads the Vpp that was calculated for it.
SD SERIES TRANSMITTER96 • • • •••SOUTHERN AVIONICS COMPANY8.6.6 Click on Power Factor Set and Observe that the power in the Power measured window comes into agreement with the true power as adjusted to on the scope.8.6.7 The Power curve has now been re referenced. Exit out of the Calibration and Setup menu .8.6.8 Click on control and perform a few spot checks to confirm that the power being read out on the PC is accurate. Power calibration is complete. Leave the Scope attached to the dummy load and leave the System set at full legal output power.8.7 Modulation Checks8.7.1 Note the carrier only Vpp level on the Scope and write it down.8.7.2 Click on Control and enter 100% modulation either manually or with the slider.8.7.3 Set the Scope for reading a 400 or 1020 Hz modulation envelope. Verify the modulation envelope just touches zero baseline at modulation valleys8.7.4 Verify that the modulation Vpp peaks are reaching twice the carrier Vpp ,earlier noted, within 5%8.7.5 On the PC, adjust the Modulation level down to 50%8.7.6 Read on the Scope measuring the valley and peak of the envelope. Using the formula Mod% = (Vmax-Vmin) / (Vmax+Vmin) compute the actual modulation.8.7.7 Verify the set modulation and the observed modulation% agree to within 5%8.7.8 If the Modulation does not track between these two points a calibration must be performed.8.8 Modulation Calibration8.8.1 Refer to the SDF31002 , Page 10, drawing and locate the Analog I/O PCB (SLP10005) in the Controller Section. Connect a Scope probe to TP102 ...(use TP0 for GND)8.8.2 Adjust the modulation level to 100%8.8.3 Adjust R10 on the same PCB until the waveform just touches the zero or GND reference point at its negative most excursion.8.8.4 Meter TP103 and adjust R101so it reads 4.0VDC8.8.5 Meter TP104 and adjust R102 so it reads 4.0VDC8.8.6 Remove the scope and meter connections8.8.7 Click on Setup then click on Calibration.
SD SERIES TRANSMITTER 97 • • • •••SOUTHERN AVIONICS COMPANY SECTION 38.8.8 Click on the 50% set point8.8.9 Verify that the factory Modulation Coefficients are correctly entered. These will be listed in the factory acceptance test sheet. Re-enter them if they are corrupted or missing. Click on Set when they are correct8.8.10 Adjust the Modulation Factor Slider until the modulation measured window reads 50%8.8.11 Click on the 100% setpoint8.8.12 Verify that the modulation setting reads correctly at both points.8.8.13 That ends modulation calibration.8.9 Ident. Checkout
SD SERIES TRANSMITTER98 • • • •••SOUTHERN AVIONICS COMPANY8.9.1 Close the Calibration and the Setup windows.8.9.2 Click on Control and in the Mode section, Click on IDENT 8.9.3 Set the Modulation Level to 95% and click on Set .8.9.4 Attach the Scope to the Dummy Load and verify that the output RF modulation envelope is being Keyed with the proper Morse code ID and timing interval as specified by the USER during setup.8.10 Limits Tests.8.10.1 On the PC, Click on Control and enter a Power level greater than the Maximum allowable power. 8.10.2 Observe that the controller /Monitor will not allow a power greater than the systems maximum allowable power rating as purchased. 8.10.3 Return the power setting to an allowed level.8.10.4 Enter a modulation level above 100% 8.10.5 Observe that the Controller/Monitor will not allow more than 100% modulation.8.10.6 Return the modulation setting to 95% 8.11 Optional DC/DC testing8.11.1 If Battery backup operation is to be utilized to provide power during AC power line failures Go to the Optional DC Installation Section which is included in the Options section. An OEM battery charger modified to input charge/discharge information will be explained there.8.12 Optional AWOS audio PCB.8.12.1 The Audio PCB is installed and set up at the Factory and is not designed to be adjusted in the field. The Customer input level should typically be set to -17dBm however levels up to +5 dBm are acceptable 8.12.2 Note that the AWOS modulation path is NOT controlled by the Controller /Monitor. Its own AGC circuitry will prevent any sustained modulation in excess of the alignment value of 95% irregardless of the customer input level8.13 Closing up the system8.13.1 On the PC open the control window if not already opened and set the RF Power output to Zero8.13.2 Toggle the AC mains power switch OFF8.13.3 Replace all the previously removed front panels except the main watertight system housing cover.8.13.4 Disconnect the Dummy load .8.13.5 All general transmitter Dummy Load installation checks are complete. The transmitter is ready to be connected to the Beacon Site antenna system and no further adjustments will be required. It is not advisable to attempt any adjustments while connected to the Antenna system except those allowed by software. 9.0 PLACING THE SYSTEM IN OPERATION9.1 Connecting to a Southern Avionics Antenna Coupler
SD SERIES TRANSMITTER 99 • • • •••SOUTHERN AVIONICS COMPANY SECTION 39.1.1 Install the Coupler /Antenna combination according to the Coupler Installation Manual which depends on which type is purchased.9.1.2 Connect the furnished N terminated Coax from the Transmitter RF output N connector to the Antenna Coupler . SAC couplers come with a standard N connector.9.1.3 Using the PC to control the Transmitter, follow power-up and tuning directions in the coupler manual. Basically the coupler must be set up to present a 50 OHM , minimally reactive load to the Transmitter .9.2 Connecting to an OEM coupler9.2.1 Depending on the Coupler an adapter may need to be furnished or a new cable fabricated by the USER. It is the USER's responsibility to verify that the coupler is one designed for a standard 50 Ohm non reactive input. The Installation Section is Complete
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SD SERIES TRANSMITTER 101 • • • •••SOUTHERN AVIONICS COMPANY SECTION 44 MAINTENANCE4.1 ALIGNMENT AND ADJUSTMENT 1.0 THE STANDARD ALIGNMENT CONFIGURATIONThe standard alignment configuration is a way in which the SD250 is connected to power and load to ensure reproducibility. Any subsequent alignment procedure assumes the following hook-up.0.1 Connect AC mains L1 to user section TB1-1 (115/230 VAC Hot )0.2 Connect AC mains L2 to user section TB1-2 (115/230 VAC Neutral or Hot0.3 Connect AC mains GND to user section TB1-3 ( AC Power GND )0.4 Connect the main cabinet ground to a good Earth ground.0.5 Connect RF Out to a 50 Ohm non-reactive load.0.6 Connect Battery I Sample to TB1-40.7 Connect Battery + to TB1-5 0.8 Connect Battery - to TB1-60.9 The Local PC used to communicate with the SD250 should be commonly grounded with the unit. Be aware that many PC's are not shielded that well and may behave strangely or lock up if located where intense RF fields exist. Therefore keep the PC as far away from the coupler /antenna as possible.4.2 CONTROL MONITOR4.2.1 ANALOG I/O ALIGNMENT 1.0 PRELIMINARY SET-UP0.1 Successful alignment of this PCB requires a fully functional system and a previously aligned RF section. 0.2 Adjust R14 And R15 fully CCW0.3 Verify that all ac and dc power switches are turned off 0.4 Connect a PC to the Controller / Monitor local port with an RS232 null modem cable. 0.5 Turn the PC on and Load and Run the USER Software supplied with the System0.6 Turn on AC main power switch0.7 Turn on the Controller / Monitor AC Distribution power switch0.8 Turn on the Transmitter 1 AC Distribution power switch0.9 On the PC click on Open Port0.10 Click on ID CONFIG and set up for the normal frequency of operation.0.11 Click POWER ON
SD SERIES TRANSMITTER102 • • • •••SOUTHERN AVIONICS COMPANY1.0 FORWARD / REFLECTED POWER ALIGNMENT1.1 Set Mode to CARRIER1.2 Set the RF POWER level to the maximum power allowed.1.3 Meter TP101 and adjust R101 for 3.50VDC (this setting allows for continuous modulation power readings not to exceed 5.0VDC max )1.4 Set the RF POWER level to Zero1.5 Disconnect the dummy load creating a 100% reflected power condition1.6 Increase RF POWER to 25 watts 1.7 Meter TP101 and record1.8 Meter TP102 and adjust R102 until it is the same as TP1011.9 Set the RF POWER level to Zero1.10 Re-connect the dummy load and connect calibrated Scope to read Power accurately1.11 On PC click on Power Calibration 1.12 Follow screen prompts to establish the Power Correction Factor. When complete make sure to STORE results.1.13 Exit the Calibration Menu1.14 Check the Power calibration from low power to high power and verify Power indicated by the Controller/ Monitor as seen on the PC readout is accurate to within 2%2.0 MODULATION DETECTOR ALIGNMENT2.1 Set Mode to CONTINUOUS2.2 Set MODULATION to 50%2.3 Set the RF POWER level to 50% of the maximum power allowed2.4 Connect a scope to TP1 and verify the presence of a tone frequency audio AC signal riding above ground. 2.5 Connect the scope to TP2 again verifying the presence of the same tone frequency audio signal being clamped near ground. 2.6 Adjust R8 until the negative swing of the signal just touches ground.2.7 On the PC increase the RF POWER level to the Maximum Allowed or 50 Watts whichever is greater.2.8 Attach a meter to TP3 (Vmax DC output)2.9 Adjust R14 until TP3 reads 4.0 VDC2.10 Attach a Meter to TP4 (Vref DC output)2.11 Adjust R15 until TP4 reads 4.0VDC
SD SERIES TRANSMITTER 103 • • • •••SOUTHERN AVIONICS COMPANY SECTION 44.2.2 DIGITAL I/O ALIGNMENT1.0 PRELIMINARY SET-UP1.1 Successful alignment of this PCB requires a fully functional system and a previously aligned RF section. 1.2 Verify that all ac and dc power switches are turned off 1.3 Adjust R5 fully CW1.4 Connect a PC to the Controller / Monitor local port with an RS232 null modem cable. 1.5 Turn the PC on and Load and Run the USER Software supplied with the System1.6 Turn on AC main power switch1.7 Turn on the Controller / Monitor AC Distribution power switch1.8 Turn on the Transmitter 1 AC Distribution power switch1.9 On the PC click on Open Port1.10 Click on ID CONFIG and set up for the normal frequency of operation.1.11 Click POWER ON1.12 Set the RF POWER level to Zero1.13 Set Mode to CARRIER2.0 PULSE WIDTH MODULATOR ALIGNMENT2.1 Scope TP2 and adjust R9 for a 75,000 ±500 Hz, +4 VDC to -4 VDC triangle-wave.2.2 Scope TP3 and observe a 75000 Hz square wave that is +12Vpk and less than 50% duty cycle. 2.3 Adjust R28 for an exact 45% duty cycle square-wave at TP3. Note that this setting is critical and is the basis for modulation purity and all subsequent power alignment. Calibration of the RF section is based on this waveform.2.4 Set the RF POWER to the maximum allowed power or 100 watts whichever is LEAST2.5 Measure the output power with a calibrated scope at the dummy load. 2.6 If the power output is not within 2% of the power setting then the output of the controller/monitor must be verified and the calibration pot on the PA Power supply PCB must be re-adjusted. This is easy to do. It must be stressed that tweaking of the duty cycle to achieve alignment is not acceptable.2.7 Set up the scope attached to the dummy load for monitoring the modulation envelope.2.8 Set the RF POWER to 25 watts.2.9 Set the Mode to CONTINUOUS2.10 Set the Modulation to 100%2.11 Adjust R30 until the modulation envelope is indicating 100% modulation2.12 Set the RF POWER level to the maximum power allowed.
SD SERIES TRANSMITTER104 • • • •••SOUTHERN AVIONICS COMPANY2.13 Fine Adjust R30 again for 100% modulation.2.14 Set the RF POWER to 25 watts.2.15 Set the Modulation to 125%2.16 Adjust R5 until the modulation envelope peak just begins to be limited as indicated by flat-topping.2.17 Reduce Modulation to 95%2.18 Set the RF Power to the normal allowed output Power2.19 Set the Mode to IDENT2.20 If the optional Audio PCB is included proceed to the SLP10020 alignment section2.21 This completes Digital I/O alignment4.2.3 AUDIO OPTION (AWOS) ALIGNMENT PRELIMINARY SET-UP2.1 Successful alignment of this PCB requires a fully functional system and a previously aligned Digital I/O PCB 2.2 Verify that all ac and dc power switches are turned off 2.3 Disconnect the main AC input by either unplugging the unit from the mains or turning OFF the main USER supply breaker.2.4 An audio test generator with a 600 Ohm variable output calibrated from +10 to -40 dbm is required.2.5 Connect the Audio Generator output to TB6 on the User Interface PCB in the USER section. Connect the individual wires as follows: (see assembly drawing SAP10006)+Audio to TB6-1- Audio to TB6-2 Shield to TB6-32.6 Remove the Digital I/O PCB from the Control Monitor Section and set JP1 to 1-3 and JP2 to 1-2 . Install the piggyback Audio PCB (see drawing SAP10020 for details)2.7 Set The Audio PCB Jumpers JP1 to 1-3, JP2 to 1-22.8 Place the Digital I/O PCB on an extender and re-install it.2.9 Re-establish the main AC Power source. 2.10 Connect a PC to the Controller / Monitor local port with an RS232 null modem cable. 2.11 Turn the PC on and Load and Run the USER Software supplied with the System2.12 Turn on AC main power switch2.13 Turn on the Controller / Monitor AC Distribution power switch2.14 Turn the Transmitter 1 AC Distribution power switch ON2.15 On the PC click on Open Port2.16 Click on ID CONFIG and set up for the normal frequency of operation.
SD SERIES TRANSMITTER 105 • • • •••SOUTHERN AVIONICS COMPANY SECTION 42.17 Click POWER ON2.18 Set the RF POWER level to Zero2.19 Set the Modulation to 95%3.0 AUDIO AMPLIFIER COMMON MODE BALANCE3.1 Set the Audio generator to output 1000Hz @ 0.0 dBm3.2 Scope TP1 and adjust R22 for minimum signal @ 1000Hz. This should be less than 20 millivolts.3.3 Turn the Controller / Monitor AC Distribution power switch OFF3.4 On the Audio PCB move the jumpers JP1 to 1-2 and JP2 to 1-24.0 AUTOMATIC GAIN CONTROL4.1 Connect a calibrated Modulation monitor to the transmitters output RF line4.2 Turn the Controller / Monitor AC Distribution power switch ON4.3 Click POWER ON4.4 Set the RF POWER level to 25 Watts4.5 Set the Mode to CARRIER4.6 Set the Signal Generator to output 1000Hz @ -28Dbm4.7 Scope TP3 and adjust R24 until it just switches to +12V(high)4.8 Increase The Signal generator output to -17 dBm 4.9 Temporarily adjust R29 until 95% modulation is read on the Modulation monitor4.10 Verify AGC capture takes place indicated by no further increase in Modulation percentage as the signal generators output is increased up to +10dBm. 4.11 Set the Audio Generator to -17dBm4.12 Adjust R29 for Zero modulation.4.13 On the PC switch the Mode to CONTINUOUS4.14 Adjust R2 until the Monitor reads 20% modulation4.15 Reduce the Audio Generator output to -30 dBm4.16 Verify the Keyer Tone modulation level returns to 95% within 5 seconds4.17 Increase the Audio Generator output to +10 dBm4.18 Adjust R29 until the composite modulation reads 95%. If only a scope is available, adjust the modulation valleys to just touch the zero (gnd) baseline and then back off the adjustment 1/2 turn.4.19 On the PC click on Power off.4.20 Turn All Power switches OFF4.21 Replace the Digital I/O PCB in its Slot4.22 Audio PCB alignment is Complete.
SD SERIES TRANSMITTER106 • • • •••SOUTHERN AVIONICS COMPANY4.3 TRANSMITTER4.3.1 PA POWER SUPPLY ALIGNMENT (PAPS)Safety Note: Dangerous voltages are present on this PCB during power on tests. Be very careful when working on this board. When power is removed dangerous voltage will still be present on the HV cap bank. A built in HV Bleeder on the mother board will discharge the HV cap bank in about 30 seconds. Red LED DS1 will be on if power is present. Another LED on the mother board will also indicate HV presence. Verify this with a meter check at either end of R69 until you are personally confident the bleeder circuit and associated indicators are operating correctly.Note: To be able to successfully complete this alignment without using special loading fixtures we rely on a normal load being presented to the supply by the RF Power Amplifier PCB and Filter PCB. Therefore it is important that those PCBs be aligned and in good working order. 1.0 PRELIMINARY CHECKS AND ADJUSTMENTS1.1 Verify that all ac and dc power switches are turned off .1.2 Connect a PC to the Controller / Monitor local port with an RS232 null modem cable. 1.3 Turn the PC on and Load and Run the Controller / Monitor user Software supplied with the System1.4 Remove the RF power amplifier PCB which removes the load from the PAPS1.5 Remove the PAPS PCB and place it on the extender fixture.1.6 Adjust R32,R38,R15, R41, R43, R48 and R66 fully clockwise (CW)1.7 Adjust R4, R7, and R40 fully counterclockwise (CCW)1.8 Adjust R45 and R46 for middle range1.9 Toggle the Manual HV switch S3 to the OFF position (actuator thrown toward the front of the PCB)1.10 Move jumper JP1 to 3-4 (lower position) enabling local power control 2.0 DC CONTROLLER SECTION LOW VOLTAGE ALIGNMENT2.1 Turn the main power AC switch on. . Caution! Input HV is on!2.2 Turn the AC distribution switch for Transmitter 1 or Transmitter 2 on depending on where the extender is being used.2.3 Verify the presence of +50vdc on TP1 of the RF motherboard in use.2.4 Adjust R43 for 12.00 ±0.1 vdc at TP112.5 Adjust R48 for 12.00 ±0.1vdc at TP13 2.6 Press the manual reset buttons S1 and S22.7 Adjust r4 for 4.00 ±0.01vdc at TP12.8 Initially adjust R7 for approximately 2.7vdc at TP5 2.9 Scope TP2 and further adjust R7 until an approximate 50% duty cycle 75khz square-wave is seen. A loose feel to the adjustment is normal since HV feedback which stabilizes the signal is not yet present. 2.10 Read TP2 with a calibrated frequency counter and adjust R20 for 75 kHz ±500 Hz. Note that this frequency is not critical but is optimum for the inductor used in the buck converter.
SD SERIES TRANSMITTER 107 • • • •••SOUTHERN AVIONICS COMPANY SECTION 42.11 Connect channel 2 of the scope to TP3 and verify that the two signals are 180 degrees out of phase and have approximately 250 nano-seconds dead time between them. Dead time is here defined as that period when both signals are low at the transition point between one being high and the other being low.2.12 Connect scope channel 1 and 2 to the gates of Q1 and Q2 and verify the 75khz signals are 180 degrees out of phase.2.13 Important! Adjust R7 fully CCW3.0 DC-DC CONVERTER LOW VOLTAGE ALIGNMENT3.1 Scope TP12 and adjust R45 for 75kHz ±500Hz . Then adjust R46 for 50% duty cycle. 3.2 Scope The Gates of Q4 and Q5 and readjust R46 until the 75 kHz signal is at a 50% duty cycle. Some readjustment between R45 and R46 may be necessary. 3.3 Remove the scope leads3.4 Adjust R57 until TP16 is at 2.50 ±0.01VDC . This sets the DC-DC HV shut down level to 250V or more. Built in hysteresis will cause the supply to slowly discharge to 220VDC and again turn on if no current is being drawn by the RF Power Amplifier.3.5 Meter TP14 and adjust R66 for 3.75 ±.01 VDC This sets the DC-DC over-current shut down point equivalent to 250W @125% Modulation. This setting is good for all power ranges.4.0 DC CONTROLLER HV ALIGNMENT , UNLOADED4.1 Adjust R82 for 1.30 volts at TP17. This sets the inrush limiter to drop out at 130 Volts 4.2 Using the manual HV switch S3 turn on High Voltage. Be Aware of any unusual behavior and be ready to shut off main power.4.3 Relay K1 will be heard activating immediately followed by K2 a short time later. This is the inrush sequence. The first time HV is turned on, two (2) distinct relay closures should be heard as the HV caps charge up. If the Cap bank is already charged both relays will pull in simultaneously. Verify that DS1 illuminates as well as the LED on the mother board.Note: It is important to realize that the HV ON/OFF switch does not bleed off the HV cap bank. The bleeder turns on only when 50V turns off. This means AC and DC power must both be removed.4.4 Verify 250VDC at TP2 on the RF Motherboard. 4.5 Meter TP6 And slowly Adjust R7 (power output calibration control) observing the voltage gradually increasing.4.6 Depending on the maximum power the transmitter will be operating at continue to adjust R7 until the nominal output DC voltage for that power is reached as listed below:
SD SERIES TRANSMITTER108 • • • •••SOUTHERN AVIONICS COMPANY4.7 The PAPS is now calibrated for Maximum normal output based on an expected 4.0V feed from Controller / Monitor. Do not disturb the R7 setting again until it is connected to the RF Amplifier it will feed, at which time fine adjustments may be required.4.8 Adjust R4 (manual power control) fully CCW. In the future any manual test power control will be done with this pot only.4.9 Meter TP8 and Adjust R32 to read 1.90 ±0.05 VDC setting the DC Controller over-voltage fault level to 190VDC4.10 Meter TP9 and adjust R38 to read 0.59V. This sets the Maximum peak current to a value similar to that drawn when running 250 Watts and over-modulating 120% ( This setting should be set slightly higher than the RF PA shutdown setting allowing better diagnostic analysis)4.11 Turn off all power switches4.12 Switch OFF HV manual control switch S34. 1 3 A ll o w a n y H V t o Bl e ed off e ns u ri ng H V i nd i ca to r LE D DS 1 i s ex ti n gu is h ed . 5.0 DC CONTROLLER HV ALIGNMENT WITH RF POWER AMPLIFIER INSTALLED5.1 Move JP1 the jumper to 1-2 (the upper position) enabling Controller / Monitor control5.2 Install The RF Power Amplifier PCB 5.3 Ensure that the Filter/Bridge PCB is installed and strapped for the Frequency of operation5.4 On the RF Mother PCB remove F1 and connect a 10 Amp Current meter across the fuse-holder. 5.5 Connect Channel 1 of the Scope across the 50 Ohm NI dummy load.5.6 Turn on Main AC power and switch on Controller / Monitor power5.7 On PC click on the ID CONFIG button and set the frequency of operation for the filter installed. Close the window when done. 5.8 Turn on Transmitter 1 AC power distribution switch .5.9 On the PC Click on the POWER ON button and verify the HV led illuminates.5.10 On the PC click on the CONTROL button opening the Power/Modulation control window5.11 Set the RF power level to the 25% of the maximum power allowed on site. Verify the correct RF power output on the Scope. Pout = (RFVPP ÷ 2.828)² ÷ R dummy load5.12 Increase Carrier power until maximum allowed power is reached as indicated on the monitoring Scope on the dummy load.Maximum Power DC Controller Output250 Watts 160 VDC100 Watts 100 VDC50 Watts 72 VDC25 Watts 50 VDC
SD SERIES TRANSMITTER 109 • • • •••SOUTHERN AVIONICS COMPANY SECTION 45.13 Set the modulation level to 100%5.14 Meter TP10 Set R41 fully CW and adjust R40 until the voltage equals the current in Amps on the current meter.. ( Example: 2.7 amps = 2.7volts at TP10 )5.15 In the PC control window, set the RF Carrier power to Zero.5.16 Turn the DC Input power switch on.5.17 In the PC control Window again adjust RF Carrier Power output to Maximum allowed output as read by the scope.5.18 Turn OFF the Transmitter AC power distribution switch and verify that Controller / Monitor automatically folds-back the RF Power to 80% of Maximum allowed output. This fold-back feature helps preserve battery life in an emergency situation.5.19 Turn Transmitter AC Distribution Switch back on and verify Full legal power levels are re-established. 5.20 Turn the DC input supply switch OFF5.21 On the PC Control Panel window, set RF output and Modulation % to Zero5.22 Close the control Window on the PC and Click on Power OFF, at which time HV relay drop-out should be heard5.23 Click on the CLOSE PORT button6.0 PA POWER SUPPLY ALIGNMENT IS COMPLETE6.1 Turn the Transmitter's AC Power off and allow HV to discharge6.2 Turn Controller / Monitor's AC power OFF6.3 Remove the PA Power Supply from the extender fixture.6.4 Disconnect the Current meter connected to F1 fuse holder on the RF Mother Board and replace F16.5 Re-install the PA Power supply in the RF Module.4.3.2 RF POWER AMPLIFIER ALIGNMENT (PA)Safety Note: Dangerous voltages are present on this PCB during power on tests. Be very careful when working on this board. When power is removed dangerous voltage will still be present on the HV cap bank. A built in HV Bleeder on the mother board will discharge the HV cap bank in about 30 seconds. On The PA Power supply PCB Red LED DS1 will be on if power is present. Another LED on the mother board will also indicate HV presence. Verify
SD SERIES TRANSMITTER110 • • • •••SOUTHERN AVIONICS COMPANYthis with a meter check at either end of R69 until you are personally confident the bleeder circuit and associated indicators are operating correctly.Note: To be able to successfully complete this alignment without using special loading fixtures we rely on a normal load being presented to the RF Power Amplifier by the Filter/Bridge PCB. Therefore it is important that the Filter/Bridge PCB be optioned for the correct frequency and in good working order.1.0 PRELIMINARY SET-UP1.1 Verify that all ac and dc power switches are turned off 1.2 Connect a PC to the Controller / Monitor local port with an RS232 null modem cable. 1.3 Turn the PC on and Load and Run the Controller / Monitor user Software supplied with the System1.4 Remove the RF Amplifier PCB and place it on the extender fixture.1.5 Set JP1 jumper to connect 1-21.6 Adjust R38 fully CCW1.7 Adjust R14,R20, and R28 fully CW 1.8 Turn The Main AC power switch ON 1.9 Turn the Controller / Monitor AC distribution switch ON1.10 On the PC screen Click on OPEN PORT 1.11 Click on ID CONFIG and set up for the proper Site RF frequency and Tone1.12 Click on Power OFF 2.0 RF Power Amplifier low level alignment2.1 Turn the Transmitter (1 or 2) AC Power Distribution Switch ON 2.2 Meter TP1and Adjust R38 CW to read 12.0 ± 0.01 vdc2.3 ON the PC click on Power ON2.4 Scope TP10 and verify the presence of 5V square-wave RF at the previously selected Frequency. If an outside user source of RF is being used it should have a minimum level of 1Vpp2.5 Scope TP9 and adjust R31 for a 10 Vpp RF signal at the same frequency2.6 Scope TP11 and adjust R37 for a 50% duty-cycle 2.7 Scope TP12 and verify a 50% duty cycle 30Vpp RF signal at the same frequency2.8 Using 2 channels Scope the Phase of the Gate signals at Q4,5,6 and 7.2.9 Verify that Q4 and Q7 are in phase. 2.10 Verify that Q5 and Q6 are in phase2.11 Verify that Q4 and Q5 are 180 deg. Out of phase2.12 Attach the Dual Scope probes to TP2 and TP32.13 Verify TP2 is a +12Vpk 75kHz square-wave with a 45% duty cycle2.14 Verify TP3 is a +12Vpk 75Khz square wave 180 degrees out of phase with TP2
SD SERIES TRANSMITTER 111 • • • •••SOUTHERN AVIONICS COMPANY SECTION 42.15 Be sure of the above Verification! TP2 and TP3 must be correct and out of phase or serious damage to the PA will result when HV is applied in the subsequent steps.2.16 Turn Transmitter (1 or 2) AC Power Distribution switch OFF3.0 RF Power Amplifier high level adjustments.3.1 Connect an RF Ammeter in series at JP1 the large current jumper.3.2 Turn Transmitter (1 or 2) AC Power Distribution switch ON3.3 On the PC click on POWER ON.3.4 On the PC, click on Control opening the Power/Modulation page3.5 In the PC Control window Set the mode to CARRIER3.6 Set the RF power control to 10 watts and click on set.3.7 Scope the RF output at the dummy-load and verify the power output is 10 ± 0.5 Watts. Also verify the waveform is a clean sinewave.3.8 On the PC increase the RF power output, being careful not to exceed the test meter rating, to the maximum allowable output and verify it at the dummy load. If this power is too much for the meter range select the highest power you can read on scale3.9 Read the current displayed on the RF Ammeter. (@100W 2.7Amps is typical) ,divide the Ammeter value by two (2) and record the value.3.10 Connect a Meter between TP4 and TP8 then fine Adjust the duty cycle with R37 until the meter reads Zero volts3.11 Adjust R14 until TP4 reads the recorded value3.12 Adjust R28 until TP8 reads the recorded value3.13 Check The PC and verify that the Controller / Monitor PAI 1 & 2 current readings agree with the values set at TP4 and TP83.14 On the PC set the RF power control to Zero 0 watts and click on set.3.15 On the PC click on POWER OFF3.16 Turn Transmitter (1 or 2) AC Power Distribution switch OFF3.17 Disconnect the Ammeter and Reinstall the JP1 jumper.3.18 Remove the RF Power Amplifier from the extender fixture and re-install it in the RF section.3.19 Turn Transmitter (1 or 2) AC Power Distribution switch ON3.20 On the PC click on POWER ON3.21 Meter TP7 and on the PC set the RF power for 5 watts.3.22 Scope the output to the Dummy load and verify The power output is correct ± 5% 3.23 Verify the PAV being reported by the Controller / Monitor agrees with the TP7 reading3.24 Continue checking the power accuracy across the allowed power range in 5 watt intervals to 50 watts , 10 watt intervals to 250 watts. Check that Controller / Monitor PAV readings agree with TP7 3.25 On the PC set the RF power control to the maximum allowable output and click on set.
SD SERIES TRANSMITTER112 • • • •••SOUTHERN AVIONICS COMPANY3.26 On the PC set Mode to Continuous3.27 On the PC set and increase modulation in steps from 10 to 100% verifying a proper sinusoidal modulation envelope. 3.28 With Modulation at 100%, scope the output at the Dummy load and adjust R20 CCW until the shutdown occurs. the Controller / Monitor should indicate a fault condition.3.29 Back off R20 and reset the fault on the PC. Verify Modulated output returns.3.30 Increase Modulation to 120% and adjust R20 CCW again slowly until a shutdown occurs.3.31 On the PC adjust the Modulation to 95%, then set the Mode to IDENT.3.32 Monitor the output for one minute and verify no faults occur3.33 The RF Power Amplifier Alignment is complete4.3.3 FILTER / BRIDGE ALIGNMENT (FB)Safety Note: Dangerous RF voltages are present on this PCB during power on tests. Be very careful when working on this board. 1.0 PRELIMINARY SET-UP1.1 Verify that all ac and dc power switches are turned off 1.2 Connect a PC to the Controller / Monitor local port with an RS232 null modem cable. 1.3 Turn the PC on and Load and Run the Controller / Monitor USER Software supplied with the System1.4 Remove the Filter/Bridge PCB from the RF Section and place it on an extender fixture1.5 Adjust R7 and R11 fully CW1.6 Set jumper JP13 and JP14 to B1.7 Set jumpers JP1 thru JP12 according to the Frequency Band Chart on the Filter/Bridge Schematic (SEP10002 / 0x ) sheet 1 of 3. 2.0 POWER BRIDGE BALANCE 2.1 Turn The Main AC power switch ON 2.2 Turn the Controller / Monitor AC distribution switch ON2.3 Turn the Transmitter (1 or 2) AC distribution switch ON2.4 On the PC screen Click on OPEN PORT 2.5 Click on ID CONFIG and set up for the proper Site RF frequency and Tone2.6 Click on Power ON and observe the HV lamp on the PAPS comes on2.7 Click on Control and when the window opens select CARRIER MODE2.8 Set the Carrier Power level to 25 watts
SD SERIES TRANSMITTER 113 • • • •••SOUTHERN AVIONICS COMPANY SECTION 42.9 Meter TP1 and adjust R21 for a minimum reading . This reading should be close to zero volts.2.10 On the PC click on Power OFF 2.11 Turn the Transmitter (1 or 2) AC distribution switch OFF. Wait as the HV lamp slowly extinguishs2.12 Set Jumper JP13 and JP14 to A2.13 Turn the Transmitter (1 or 2) AC distribution switch ON2.14 Click on Power ON and observe the HV lamp on the PAPS comes on2.15 Again, set the Carrier Power level to 25 watts2.16 Meter TP2 and adjust R22 for a minimum reading . This reading should typically be approximately 0.160VDC.2.17 Meter TP1. The reading should typically be approximately 2.0vdc2.18 The Bridge is now balanced. Leave all jumpers where they are and continue with the procedure.3.0 FAULT SET-UPNote:Forward and reflected power can also used to trigger fast fault interrupts rather than the slower routine monitoring the controller / monitor accomplishes. It is up to the USER how these should best be set up but the following default settings are factory standard.3.1 The fault lamp on the Digital I/O PCB (DS3) must be monitored for the following steps. If an optional OP-Panel is installed it must be removed to observe this lamp.3.2 On the PC set the power to Zero RF Output and temporarily disconnect the Dummy Load3.3 Slowly increase the RF power output until the Controller / Monitor reports 20% of the Maximum Allowed Level as reflected power. 3.4 Adjust R11 until the Digital I/O fault LED-DS3 just illuminates.3.5 RF output should immediately turn off. 3.6 Back off R11 and On the PC click on reset (this can also be done manually on the Filter/Bridge PCB) and observe the Digital I/O fault LED DS3 extinguishes and RF power comes back on.3.7 Again very slowly adjust R11 until the fault just triggers and Digital I/O fault LED-DS3 comes on.3.8 Decrease Power output and click on reset. Increase the power again to 20% of the Maximum Allowed Level, verifying a fault trigger occurs at that level. Re-adjust R11 if necessary .3.9 On the PC set the RF Power to Zero3.10 Re-attach the Dummy Load3.11 On the PC set the RF Output to the Maximum Allowed Level. Click on CONTINUOUS tone output.3.12 Set the Modulation to 115 %3.13 Adjust R7 until the Digital I/O fault LED-DS3 illuminates.3.14 Verify that RF Power output ceased immediately .3.15 Back off R7 , reset the fault and repeat the adjustment slowly to obtain an accurate trigger point3.16 On the PC set the Mode to IDENT, the Modulation to 95%3.17 Click on Power OFF and turn the Transmitter (1 or 2) AC power OFF
SD SERIES TRANSMITTER114 • • • •••SOUTHERN AVIONICS COMPANY3.18 Remove the PCB from the extender and re-install it in the RF Section3.19 Turn the Transmitter (1 or 2) AC power ON3.20 Click on Power ON.3.21 Monitor the System for 2 minutes and verify no faults or shutdowns occur.3.22 Filter /Bridge Alignment is complete.
SD SERIES TRANSMITTER 115 • • • •••SOUTHERN AVIONICS COMPANY SECTION 55 ANTENNAS:The range of a beacon and antenna depends on many variables and cannot be guaranteed. Thefield strength can be calculated if the ground conductivity is known, but the field strength neededdepends on the background environmental noise which depends on location. A field strength of70V/m is generally adequate in the United States and Europe but may not be sufficient in latitudesbetween 30N and 30S. Range figures given in the following sections are based on average groundconductivity and a field strength of 70V/m.The resistance of the antenna is dependent on many conditions over which the manufacturer hasno control. The ground condition, for example, is extremely important. In a high conductivityground region, the resistance will be fairly low. This is especially true on offshore oil rigs wherethe ground system consists of a large metal structure over salt water. On the other hand, if theground conductivity is low, the resistance can become quite large. For example, permafrost inAlaska generally makes a very poor ground and in most cases a special counterpoise system mustbe used. Without a special counterpoise system, the antenna resistance may be as high as 50ohms and the antenna efficiency will be very low.THE MAST ANTENNA, "H" ANTENNA, AND 50-FOOT GUYED MAST ANTENNA AREHIGH Q, NARROW BANDWIDTH ANTENNAS. THEY SHOULD NOT BE USED FORVOICE MODULATION. THE SYMMETRICAL "T" ANTENNA IS THE ONLY ANTENNARECOMMENDED FOR VOICE MODUATION.5.1 Mast AntennaThe Mast Antenna is a short vertical monopole with capacitive top loading and inductive centerloading. It was designed for use where space is severely limited such as on offshore structures. Itis centerloaded to be resonant at approximately 500 KHz for operation between l90 and 415 KHzand at approximately 900 KHz for operation between 415 and 625 KHz. Tuning below the reso-nant frequency is accomplished with the antenna coupler. There are two versions of this antenna;one designed to be mounted on land, the other on drilling platforms or ships. Neither antennarequires guying. A capacitive hat at the top of the 34-foot Mast Antenna consists of six 8-footradials. These can be shortened if necessary for clearance on drilling platforms. The counter-poise system used for land installations consists of sixteen 60-foot radials made of #10 copperwire with 6-foot ground rods at each end and one in the center. The offshore version of the MastAntenna uses the platform structure and the water for the ground system.The range with the Mast Antenna and this transmitter depends on ground condition, frequency,the ADF, and atmospheric noise which in turn depends on location and time. Range for mostlocations in the United States with one of the lower priced ADF's is from 50 to 70 miles for fre-quencies above 250 KHz except over low conductivity ground. SAC does not recommend this
SD SERIES TRANSMITTER116 • • • •••SOUTHERN AVIONICS COMPANYantenna for land installations at frequencies below 250 KHz. The "T" Antenna is far superior atall frequencies and should be used whenever space permits. The 50-foot Guyed Mast is recom-mended for land installations where the "T" cannot be used. Calculated range over sea water withthe Mast Antenna and this transmitter is 40 miles at 200 KHz, increasing to 100 miles at 400 KHz.Ideally, this antenna should be in a clear area; however, this is very seldom feasible on offshorestructures. Large obstacles close to the antenna will affect the directional properties and the tun-ing of the antenna. If possible, the antenna should be installed with a clear area in the direction ofthe most traffic.The Mast Antenna is electrically very similar to a 200 pF capacitor in series with a small resistor.See the figure at the end of this section for a plot of the capacitive reactance. 5.2 "H" AntennaThe "H" Antenna is used on the helipad of offshore structures where there is no clear area toinstall the Mast Antenna. It is a wire structure that is installed on the perimeter of the helipad.The transmitter is mounted directly beneath it so that the vertical portion of the antenna is the off-shore structure itself. Electrical characteristics vary, depending mostly on the size of the helipadbut are generally similar to the Mast Antenna. Range is also comparable with the Mast in mostcases.5.3 50-Foot Guyed Mast AntennaThis antenna is a guyed vertical monopole with capacitive top loading that was designed for landinstallations where space is limited. The capacitive top hat consists of six 8-foot radials. Thecounterpoise system consists of sixteen 60-foot radials made of #10 copper wire with 6-footground rods at each end and one in the center. The antenna is guyed at the top and center.The calculated range with the Guyed Mast Antenna exceeds the Mast Antenna but is less than the"T" Antenna under the same conditions. This antenna is recommended for land installation wherespace does not permit use of the "T" Antenna.The Guyed Mast Antenna is electrically very similar to a 300 pF capacitor in series with a smallresistor. See the figure at the end of this section for a plot of the capacitive reactance.5.4 Symmetrical "T" AntennaThe Symmetrical "T" Antenna is recommended if sufficient land is available. This antennarequires a plot of ground approximately 150 feet by 350 feet.
SD SERIES TRANSMITTER 117 • • • •••SOUTHERN AVIONICS COMPANY SECTION 5The calculated range with the "T" Antenna and this transmitter for most locations in the UnitedStates and with one of the lower priced ADF's is from 80 to 100 miles except over low conductiv-ity ground.These range figures are for the standard "T" Antenna with a height of 55 to 60 feet. A long range"T" Antenna with a height of 80 to 85 feet has a range of 100 to 120 miles. If even more range isdesired, SAC can supply "T" Antennas with heights up to 200 feet.The standard "T" is electrically very similar to a 1000 pF capacitor in series with a small resistor.See the fiqure at the end of this section for a plot of the capacitive reactance.649 - DIAGRAM, ANTENNA REACTANCE
SD SERIES TRANSMITTER118 • • • •••SOUTHERN AVIONICS COMPANY6 PARTS LISTSSLF31002/00 - ASSY, TRANSMITTER, SD SERIES DUAL (BASIC)REFERENCEDESIGNATOR COMPONENT DESCRIPTION01 SLE10031 ASSY, FINAL TRANSMITTER DUAL (COLDFIRE)1A1A3 SLP10003 ASSY, PCB, PA POWER SUPPLY1A1A4 SLP10001 ASSY, PCB, RF POWER AMPLIFIER4A1A3 SLP10003 ASSY, PCB, PA POWER SUPPLY4A1A4 SLP10001 ASSY, PCB, RF POWER AMPLIFIER5A1A3 SLP10007 ASSY, PCB, CF CONTROLLER5A1A4 SLP10005 ASSY, ANALOG I/O AND AUDIO5A1A5 SLP10009 ASSY, PCB, DIGITAL I/O AND PWM5A1A6 SLP10009 ASSY, PCB, DIGITAL I/O AND PWM5A1A7 SLP10005 ASSY, ANALOG I/O AND AUDIO5A1A8 SLP10007 ASSY, PCB, CF CONTROLLER5A2 SLE10004 ASSY, LOAD CENTER (COLDFIRE)
SD SERIES TRANSMITTER 119 • • • •••SOUTHERN AVIONICS COMPANY SECTION 6SLE10004 - ASSY, LOAD CENTER (SD SERIES)REFERENCEDESIGNATOR COMPONENT DESCRIPTIONA1 SLP10006 ASSY, PCB USER INTERFACECB1 9C350021 CIRCUIT BREAKER, 1 POLE, 227 VAC / 65 VDC, 15 AMPCB2 9C350019 CIRCUIT BREAKER, 2 POLE, 277 VAC, 50/60 HZ, 10.0 AMPFL1 9F345000 FLTR LINE 2STG 3A FASTONFL2 9F345001 FLTR LINE 2STG 10A FASTONFL3 9F345001 FLTR LINE 2STG 10A FASTONFL4 9F345001 FLTR LINE 2STG 10A FASTONJ1 9R180001 RCPT 110VS1 9S900005 SWITCH, DPSTS2 9S900005 SWITCH, DPSTS3 9S900005 SWITCH, DPSTTB1 50000011 CONN, BARRIER TERM BLK, 8POS, 142 SERIES
SD SERIES TRANSMITTER120 • • • •••SOUTHERN AVIONICS COMPANYSLE10031 - ASSY, FINAL TRANSMITTER DUAL (SD SERIES)REFERENCEDESIGNATOR COMPONENT DESCRIPTION01 SLM10001 ASSY, TRANSMITTER ENCLOSURE (COLDFIRE)1A1 SLE10033 ASSY, TRANSMITTER (6U) COLDFIRE4A1 SLE10033 ASSY, TRANSMITTER (6U) COLDFIRE5A1 SLE10032 ASSY, CONTROL MONITOR DUAL (3U), (COLDFIRE)J68 56000004 CONN, COAX, PANEL MOUNT, RECPT
SD SERIES TRANSMITTER 121 • • • •••SOUTHERN AVIONICS COMPANY SECTION 6SLM10001 - ASSY, TRANSMITTER ENCLOSURE (SD SERIES)REFERENCEDESIGNATOR COMPONENT DESCRIPTION15 4A000000 TERM COPPER "D" 14 AWG SOLID, 4 AWG STRD18 9F580002 WEATHER STRIP, 1/4THK X 5/8W, BLACK FOAM19 9R360001 RIVET 3/16" DIA. 1/4"-3/8" GRIP POP CLOSED SS
SD SERIES TRANSMITTER122 • • • •••SOUTHERN AVIONICS COMPANYSLM10005 - ASSY, CONTROL MONITOR PANEL WITH APPLIQUEREFERENCEDESIGNATOR COMPONENT DESCRIPTIONA1 SLP10016 ASSY, CONTROL MONITOR PCB (COLD FIRE)XJ1 9J021001 MOUNTING HARDWARE, D-SUB .81 LGTH 4-40 JACK SCREW KIT
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