Advanced Signal SIGPRO Paging Data Receiver User Manual Operational Manual

Advanced Signal Corporation Paging Data Receiver Operational Manual

Operational Manual

Version 1.8.0.4 July, 1999 General Information 1 - 1FCC ID: NKO-SIGPROGeneral InformationProduct Warranty InformationAdvanced Signal products are warranted to be free from defects in material and workmanship for a period ofONE (1) YEAR from the date of shipment. Parts will be replaced free of charge for the full warranty period. Thelabor to repair products, or replace defective parts, will be covered on a return-to-factory basis only for the fullwarranty period. For warranty service or repair, products must be returned to Advanced Signal, paid bycustomer. Modifications made to products not manufactured by Advanced Signal are warranted to be free fromdefects in material and workmanship for a period of NINETY (90) DAYS from the date of shipment.Limitation on DamagesTHE ABOVE WARRANTIES ARE PURCHASER’S EXCLUSIVE WARRANTIES AND NO OTHER WARRANTY,EXPRESS OR IMPLIED, SHALL APPLY. ADVANCED SIGNAL SPECIFICALLY DISCLAIMS THE IMPLIEDWARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. ADVANCEDSIGNAL’S LIABILITY TO PURCHASER FOR ANY CAUSE WHATSOEVER SHALL BE LIMITED TO THEPURCHASE PRICE PAID TO ADVANCED SIGNAL FOR THE PRODUCTS THAT ARE THE SUBJECT OFPURCHASER’S CLAIM. IN NO EVENT WILL ADVANCED SIGNAL BE LIABLE FOR ANY DAMAGESRESULTING FROM LOSS OF DATA OR USE, LOST PROFITS OR ANY INCIDENTAL OR CONSEQUENTIALDAMAGES. THESE LIMITATIONS AND DISCLAIMERS ARE NOT MADE BY ADVANCED SIGNAL WHEREPROHIBITED BY LAW.Other DisclaimersNon-Advanced Signal manufactured products and batteries are excluded from this warranty. Non-AdvancedSignal manufactured products are subject to the warranty provided by their manufacturers. Advanced Signalreserves the right to use reconditioned or refurbished parts. These reconditioned or refurbished parts arewarranted as new.Computer Software CopyrightsAdvanced Signal warrants that its software and firmware designed by Advanced Signal will execute itsprogramming instructions when properly installed. Advanced Signal does not warrant that the operation of theinstrument, or software, or firmware will be uninterrupted or error free. Advanced Signal products may includecopyrighted Advanced Signal computer programs stored in semiconductor memories or other media. Laws inthe United States and other countries preserve for Advanced Signal certain exclusive rights for copyrightedcomputer programs, including the exclusive right to copy or reproduce in any form the copyrighted computerprogram. Accordingly, any copyrighted Advanced Signal computer programs contained in the Advanced Signalproducts may not be copied or reproduced in any manner without the express written permission of AdvancedSignal. Furthermore, the purchase of Advanced Signal products shall not be deemed to grant either directly orby implication, estoppel, or otherwise, any license under the copyrights, patents or patent application ofAdvanced Signal, except for the normal non-exclusive, royalty free license to use that arises by operation of lawin the sale of a product.Service Warranty InformationReturn Of EquipmentIf a product malfunctions or fails in normal use within the Warranty period: (a) the purchaser shall promptly notifyAdvanced Signal of the problem and the serial number of the defective product. Advanced Signal shall, at itsoption, either resolve the problem over the telephone or issue a Return Authorization Number to the purchaser.The purchaser shall, at its cost, ship the product to Advanced Signal at the time the Return AuthorizationNumber is issued;(b) the return authorization number must be shown on the label attached to each product returned. Adescription of the fault must accompany each product returned. The returned product must be properly packed,and the insurance and shipping charges prepaid;
Version 1.8.0.4 July, 1999 General Information 1 - 2(c) Advanced Signal shall either repair or replace the returned product. The replacement product may be newor refurbished; where refurbished, it shall be equivalent to new in operation. When a returned product isreplaced by Advanced Signal, the returned product shall become the property of Advanced Signal;(d) Advanced Signal shall, at its cost, ship the repaired product or replacement to the purchaser. If thepurchaser has requested Express Shipping, the purchaser shall pay the cost of the shipping; and(e) Products which are repaired or replaced by Advanced Signal shall be free of defects in material andworkmanship that would prevent compliance in all material respects with the corresponding documentation forthe remainder of the original Warranty or 90 days from the date of repair or replacement, whichever is longer; allother terms of this Warranty apply to such repairs or replacements.CautionImproper use of your SIGNALpro may violate the provisions of the Electronic Communications Privacy Act of1986 through intentional unauthorized use of protected radio communications. Every effort is made to limit thesale of SIGNALpro to genuine radio paging operators and law enforcement agencies. Advanced Signalunequivocally assumes no responsibility for any laws that may be broken, intentionally or otherwise, through thedirect or indirect use of this, or any associated product.This device complies with part 15 of the FCC rules. Operation is subject to the condition that this device doesnot cause harmful interference. Changes or modifications to this equipment not expressly approved by AdvancedSignal are prohibited and may result in loss of the use of the device.Technical SpecificationsSystem Requirements:A paging channel receiver and a Windows 3.1X or WIN95 personal computer are required for operation.Power:Universal AC: 90 - 132VAC, 175 - 264 VAC, 47-63Hz automatic switchingInternal DC BatteryFront Panel DC InputPaging Formats:FLEX 1600 to 6400 bps, 2 and 4 levelReFLEX25/50InFLEXionPOCSAG 512/1200/2400GSCGuard tones 75/331/750/1500 baudAnalog Input:1 input per DSP Input ±7.00 V Peak (AC + DC), 200 millivolt minimum signalParallel I/O:10 Out Trig 1A trigger is produced every 0, 15, 30, and 45 seconds past the minute. When the unit is synchronized to GPSthis trigger can be used to display the start of the 1 second pulse as well as the start of a FLEX frame (providedthat the system frames are sync’d to GPS). This may be used to obtain readings on the relative phasingbetween transmitters that cannot otherwise be measured by the control system.Place one scope probe on the audio signal, a second on the one pulse per second output, and a third on trigger1. Set the scope’s trigger for channel 3, DC coupled, falling edge, 2.0V, single trigger, no filtering. Arm thetrigger just before the top of the minute. At the top of the minute the scope will trigger displaying the timedifference between the start of the one pulse and the start of the FLEX frame.Speaker:
Version 1.8.0.4 July, 1999 General Information 1 - 3Built-in audio monitor speaker, audio selected via the GUIPhysical Dimensions:8.25”W x 5.0”H x 12.75” D, approximately 13.0 lbs.Temperature 0 - 50° C with unrestricted ventilationPC Requirements:Minimum 486/66 MHz cpu, Windows 3.1x or WIN 95/98, 16MB RAM, 10MB disk space recommended for singlechannel decodingThe SIGNALpro software is stored in FLASH memory that can be upgraded by the user through the PCGraphical User Interface.Specifications subject to change without notice.Options & AccessoriesThe basic configuration of your SIGNALpro contains the SIGNALpro chassis. When ordering a SIGNALpro youmust decide on the following three items.1) You can select up to four DSP input cards to provide paging channel decoding of up to four channelssimultaneously.2) In addition, an internal GPS receiver option can be selected to provide precise location information such aslatitude, longitude, time, and satellite status, a 1 pulse per second timing reference, and real-time differentialcapability. The GPS option allows you to determine if FLEX is being transmitted at exactly the same time frameafter frame. The GPS receiver option includes a mag mount antenna and antenna cable.3) You may also select from a variety of AC input cords depending on your specific needs.OptionsThe following are wideband internal receivers that ordered for your SIGNALpro. The IF is 15.0 kHz and can beused for standard 4.8 kHz deviation paging.SP - 917RX- WB 917-950 MHzSP - 320RX- WB 322-329 MHzSP - 280RX- WB 276-286 MHzSP - 167RX- WB 167-175 MHzSP - 159RX- WB 159-167 MHzSP - 151RX- WB 151-159 MHzSP - 143RX- WB 143-151 MHzSP - 135RX- WB 135-143 MHzThe following is a narrow band internal receiver that can be ordered for your SIGNALpro. The IF is 7.5 kHz andcan be used for standard 2.4 kHz deviation paging.SP - 917RX- NB 917-950 MHzSP - 890RX- NB 890-915 MHzSP - SQCA PCB relay allows the SIGNALpro to switch between an internal narrowband receiver and an external scanner.The SQC software allows the user to measure and display InFLEXion Signal Quality Calibration (SQC)measurements.SP - R8500Used with SP-SQC. An ICOM R8500 scanner is modified to provide AMSSB audio to the SP-SQC.
Version 1.8.0.4 July, 1999 General Information 1 - 4SP - CASEA carrying case can be purchased for your SIGNALpro providing an easy method for transporting or carryingyour unit. The case contains two side pockets for the AC input cord, GUI console cable, GPS antenna andcable, user’s guide, and other miscellaneous items.SP - HCASEA hard-side case can be purchased for your SIGNALpro providing a protective environment for shipping, ortransporting the unit to and from different locations.SP - TCASEThis hard-side shipping case contains a handle and wheels for easier transport. Because of size it must bechecked for airline travel.SP - DSP2This option allows you to return your SIGNALpro to the factory to have the unit upgraded to the DSP2 inputcard(s).SP - GPSThis option allows you to return your SIGNALpro to the factory to have an internal GPS receiver installed. ThisGPS receiver option includes an active mag mount antenna and antenna cable.SP - MAINTEach SIGNALpro is sold with the first year’s software maintenance plan provided. In subsequent years, you mayselect this option which provides another year of software maintenance. This option applies to individualSIGNALpro units.SP - MAIN - EXTEach SIGNALpro is sold with the first year’s software maintenance plan provided. This option allows you toextend the coverage of the software maintenance plan for the functional lifetime of your SIGNALpro. This optionapplies to individual SIGNALpro units.SP - HWMAIN - 5Each SIGNALpro is sold with a one-year hardware warranty. You may select this option which provides up to fiveyears hardware warranty coverage. This option applies to individual SIGNALpro units.SP - HWMAIN - LEach SIGNALpro is sold with a one-year hardware warranty. You may select this option which provides hardwarewarranty coverage for the functional lifetime of the unit. This option applies to individual SIGNALpro units.RX-MODThis option can be purchased to have Advanced Signal modify an external receiver to use with your SIGNALpro.Please consult Advanced Signal prior to purchasing a unit.SP- NIUThis cable option allows you to connect an external NIU to the Parallel I/O connector of your SIGNALpro. Thisprovides both 2 and 4 level FSK directly from the transmitter controller when it is not connected to a livetransmitter.SP- C2KThis cable option allows you to connect a C2000 to the Parallel I/O connector of your SIGNALpro. This providesboth 2 and 4 level FSK directly from the transmitter controller when it is not connected to a live transmitter.SP- CLOOPThis option is for the Closed Loop System Test program that allows you to generate, and reconcile, test pages orsimulated paging traffic.SP- MAP
Version 1.8.0.4 July, 1999 General Information 1 - 5Atlas GIS mapping package allows you to take BER, CWER, and Peak Edge Error Measurements collectedfrom a SIGNALpro and creates Simulcast Performance Maps. This applies to U.S. customers only.SP- MAP - STREETStreet maps for specific MSAs or counties in the U.S.SP- MAP- STATEStreet maps for specific states in the U.S.SP- MAP - REGStreet maps for specific regions of the U.S.SP- MAP- NWStreet maps for the entire U.S.Accessories• SIGNALpro User’s Guide• 6’ PC Cable to connect your PC to your SIGNALpro• One BNC to RCA Phono Jack Connector per DSP input card• Two Jumpers per DSP input card that can be used with the parallel I/O• Cigarette lighter adapter• Cable(s) for connecting the Rx Audio Out to the Slot X Input.• Antenna(s) for internal receiver(s)• 4” Jumper Cable for each DSP Input Card
Version 1.7 July, 1999 Hardware 2 - 6HardwareSIGNALpro Front and Rear Panel FeaturesDC/DC Converter CardBatteryChargePowerVolumeDCInputOnOff(Green = battery is at full charge, Amber = lessthan full charge, Red = the battery is neardischarge)(Green = the unit is operating from any powersource, and not lit when the power switch is off)(this control knob adjusts the volume level of therear speaker output)(this dc input jack is used to connect a cigarettelighter adapter with tip positive polarity; 11-15VDC)(this switch turns the unit on or off)NOTE: Battery life can be reduced if the battery is subjected to multiple deep discharge cycles. Topreserve battery life, discontinue use of your SIGNALpro when the battery charge LED is red. If thebattery completely discharges the Power LED will have no color and the Battery Charge LED could be anycolor.OSC_GPS Card10MHzIn/OutLocalExt.GPSAnt10MHz(this jack accepts a 10 MHz sine wave input whenthe 10 MHz switch is ext, or provides an outputwhen the 10 MHz switch is Local)(this slide switch allows you to select betweenusing an internal or external 10 MHz reference, theunit will not operate properly if this switch is set forexternal and no 10 MHz is provided)(this jack provides a connection for the GPSreceiver antenna provided with the internal GPSoption)
Version 1.7 July, 1999 Hardware 2 - 7Host CPU CardStatusOSC LockSpareOutputs1PPSConsoleGUI(LED indications provided below)(LED indications provided below)(These outputs are currently inactive.)(This output provides a 1pps reference that canused as a time reference. In GPS mode this 1ppswithin 500 nsec of the GPS 1pps.)(This DB9 connector provides the connectionyour personal computer running the GUI, use thecable provided with your unit.)3412Status LEDSlow Flashing GreenIf the GPS RX is present and in use, this indicates that the GPS receiver is tracking 4 or moreGPS satellites. If GPS is not in use, it indicates the unit is ready for use.Slow Flashing AmberThe GPS RX is present, in use, and currently tracking two or three GPS satellites.Fast Flashing AmberThe GPS RX is present but it is either not responding or is currently tracking only one GPSsatellite.Fast Flashing RedGPS self test failedOSC LEDSolid GreenOSC is currently locked and aligned with GPS one pulse per second.Slow Flashing AmberOSC is in the process of aligning and locking to the GPS one pulse per secondFast Flashing AmberOSC is rapidly changing in order to align and lock to the GPS one pulse per second. All DSPdecoding is disabled during this time.Slow Flashing RedOSC is rapidly changing to align with the GPS 1PPSWhen the Status and OSC LEDs are both fast flashing red, your SIGNALpro is running from internalROM. If you encounter this situation contact Advanced Signal for assistance.
Version 1.7 July, 1999 Hardware 2 - 8DSP Input CardRx AntFmtRateRxAudioOutSlot XInput4LevelOutParallelI/OBERSyncThis is an external antenna connection for the internal receiver.LED definitions are provided below.This RCA jack is the audio output from the internal RX. This outputshould be connected to the SLOT X input below. Use the jumperprovided.This RCA jack is an audio input. You may an internal RX or externalRX.This RCA jack is an audio output. It is a reconstructed audio signalfrom the MSB/LSB connections made to the parallel I/O. Use thejumper provided to connect this output with the SLOT X audio input.Currently available outputs are listed below.Format:Green = POCSAG, Amber = FLEX, Red = Golay, off during guard tone decodingRate:Green = 512/1600/Golay, Amber = 1200/3200, Red = 2400/6400. This LED will also illuminate if guardtone is detected. Green = 75/331/750, Amber = 1500.BER:Amber = 1 or 2 bit errors detected in a codeword, Red = Codewords received with unrecoverable errors,off = no errors detected.Sync:Green = sync received and decoded, FLEX sync error < 500 usec, Amber = error > 500 usec, Red = error> 1.5 msec.LED Examples:1. Format AmberRate AmberBER OFFSYNC GreenThis indicates FLEX 3200 bps was received in-sync with previous FLEX transmissions, and no bit errors.2. Format GreenRate RedBER AmberSYNC GreenThis indicates POCSAG 2400 bps was received with correctable bit errors.
Version 1.7 July, 1999 Hardware 2 - 9NOTE: If you are operating in the RSSI only mode the Fmt LED will be Green and the Sync LED willFlash Green one second on, one second off.Parallel I/O Outputs:10 Output Trig 1 See page 1-29 Output Trig 2 See page 1-38GND7 Input Invert Audio active low ground this input using the 2 position jumper to pin 7& 8 if the audio from the receiver needs to be inverted.6 Output +5VDC - current limited by 25 ohms of resistance5 Output +5VDC - current limited by 25 ohms of resistance4 Input Symbol LSB3 Input Symbol MSB2GND1GNDNote: The DSP Input Card will fail to achieve Sync if the audio provided represents inverted data.The following information provides detailed connections between the DSP2 and various controlequipment. Please note that there is not a connection method identified for the Motorola products usingthe internal NIU.DSP2 Parallel I/O Pin out:Pin 1 GroundPin 3 Symbol MSBPin 4 Symbol LSBExternal NIU w/Generic I/OTB4-2 RXFQ1 (LSB)TB4-3 RXFQ2 (MSB)C2000 Exciter ConnectorJ4-3 TDA+ (MSB)J4-34 TDB+ (LSB)J4-10 GroundExternal NIU w/Generic I/O:TB4-2 RXFQ1 (LSB)TB4-3 RXFQ2 (MSB)Data connections for Glenayre equipment can be made at the exciter I/O board independent of controlequipment type as follows:Universal Exciter:Access to the data inputs are available at screw terminals on the I/O board, D1 (LSB) and D2. (MSB)DSP Exciter:Connections to the DSP Exciter vary depending on the type of interface board installed in the exciter.Refer to your equipment documentation to determine the configuration of the equipment to be interfaced.QT-1000 Interface:Data LSB - J1-7Data MSB - J2-1Standard Interface:
Version 1.7 July, 1999 Hardware 2 - 10Data LSB - J4-17Data MSB - J4-5C2000 Interface:Data LSB - J2-5Data MSB - J2-7INSTALLATION VERIFICATIONThe C2000 transmitter controller provides a test feature that may be used to verify installation. Thecontroller can be taken off-line and placed in the test mode to generate a periodic test pattern. This willproduce an ascending staircase on the data output of the 4 level converter.The NIU provides a test pattern using the "test txd" command and a data byte of 0x1e to produce anascending staircase pattern. Refer to the appropriate equipment manual to utilize these test features.After connecting the transmitter controller to the parallel I/O you must place the audio connector on the 4Level Out and Slot X Input connections.Rear Panel:AC Input90 - 132 VAC175 - 264 VAC47 - 63 Hz120 VA maxfuse = 2AASCII serial portDVANCEDSIGNALMADE IN U.S.A. WARNING! No operator serviceableParts inside, refer service toservice trained personnel.This is for connectingyour AC input powercord.This connection provides anASCII interface to a "dumb"terminal. Currently not used.SpeakerFanReceiver InformationReceiver RequirementsThe receiver(s) must provide DC coupled, demodulated audio to the DSP input card(s) of yourSIGNALpro. The maximum peak audio input level is ± 7.00V (AC plus DC). The AC (or signal) portionof the audio should be greater than 200 millivolts peak-to-peak. The audio signal must be DC coupledfrom the receiver for reliable data decoding.Receiver ConfigurationsThe following list of receivers is approved for use with your SIGNALpro. We strongly recommend that youuse a modified pager for field applications and a non-pager receiver for in-house testing. Some receivers
Version 1.7 July, 1999 Hardware 2 - 11require slight modifications in order to perform properly with your SIGNALpro. If you have a receiver thatis not listed below, please contact Advanced Signal’s Customer Support for guidance.Internal ReceiversSP-917RX-WB 917-950 MHz, 15 kHz IF, 4.8 kHz deviationSP-917RX-NB 917-950 MHz, 7.5 kHz IF, 2.4 kHz deviationSP-890RX-NB 890-915 MHz, 7.5 kHz IF, 2.4 kHz deviationSP-320RX-WB 322-329 MHz, 15 kHz IF, 4.8 kHz deviationSP-280RX-WB 274-286 MHz, 15 kHz IF, 4.8 kHz deviationSP-167RX-WB 167-175 MHz, 15 kHz IF, 4.8 kHz deviationSP-159RX-WB 159-167 MHz, 15 kHz IF, 4.8 kHz deviationSP-151RX-WB 151-159 MHz, 15 kHz IF, 4.8 kHz deviationSP-143RX-WB 143-151 MHz, 15 kHz IF, 4.8 kHz deviationSP-135RX-WB 135-143 MHz, 15 kHz IF, 4.8 kHz deviationIf you want to use the internal receiver’s audio you must use the short cable supplied with your unit thatconnects the RX Audio Out to the Slot X Input. If the cable is not connected the internal receiver will stillprovide RSSI information to the console program. If you use the 900 MHz internal receivers a jumperis required on pins 7 & 8 on the Parallel I/O of your DSP input card(s) to compensate for invertedaudio. Other internal receivers do not require this inversion.Motorola, NEC, and other Pagers (consult factory for applicable models).Radio Shack Pro-60 or equivalent (handheld scanner)The modifications required should be made by Advanced Signal in order to ensure proper operation withyour SIGNALpro. A jumper is required on pins 7 & 8 on the Parallel I/O of your DSP input card(s) tocompensate for inverted audio if you are monitoring VHF or 450 MHz paging frequencies. For best resultsuse this scanner while operating off batteries. The AC supply causes the BER and CWER readings to beskewed.Realistic Pro-2037 & 2042 or equivalent (desktop scanners)The modifications required should be made by Advanced Signal in order to ensure proper operation withyour SIGNALpro. A jumper is required on pins 7 & 8 on the Parallel I/O of your DSP input card(s) tocompensate for inverted audio if you are monitoring VHF or 450 MHz paging frequencies.NOTE: All scanner modifications route the audio output to the ear phone jack. The audio cableprovided with the modification should be placed in this jack. The other end (RCA phonoconnector) is placed in the Slot X Input on the DSP Input Card.Motorola External NIUThe TXDATA and GND can be used to provide 2-level data to the SIGNALpro. When used with the SP-4L-INT or SP-4L-NIU the NIU can provide a direct four-level interface to the SIGNALpro.Glenayre Universal ExciterThis can be used to provide 2-level data only to the SIGNALpro. Please contact Advanced Signal formore information. When used with the SP-4L-INT the Glenayre Universal Exciter can provide a directfour-level interface to the SIGNALpro.Glenayre DSP ExciterThis can be used to provide 2-level data only to the SIGNALpro. Please contact Advanced Signal formore information. When used with the SP-4L-INT the Glenayre DSP Exciter can provide a direct four-level interface to the SIGNALpro. Please contact Advanced Signal for further information.Glenayre C2000When used with the DSP2 Input Card, SP-4L-INT or SP-4L-C2000 the C2000 can provide a direct four-level interface to the SIGNALpro. Please contact Advanced Signal for further information.RS232
Version 1.7 July, 1999 Hardware 2 - 12This can be used to provide 2-level data only to the SIGNALpro. Please contact Advanced Signal formore information.Receiver Performance CharacteristicsThe bit error rate calculated by a DSP Input Card in your SIGNALpro will approximate the bit error ratethat a pager would experience while listening to the same RF channel. Advanced Signal does not makeany claims that the performance of a receiver connected to your SIGNALpro DSP Input Card is equal tothe performance of a pager. Pagers are able to limit their decoding task to a specific rate and format.Your SIGNALpro must be ready to switch to any other format quickly so it does not miss data containedwithin the new transmission. This forces your SIGNALpro to use rather stringent rules when deciding tocease decoding the current format.You should experiment with the placement of your modified pager or handheld scanner. At 900 MHz, afew inches may mean the difference between a local null and sufficient signal for the DSP Input Card todecode. The speaker on your SIGNALpro can be set to listen to a specific slot. Using a modified pager,and this setting, for the specific slot will allow you to hear the channel even if your SIGNALpro has ceaseddecoding. Listen for areas of weak signal as you move the unit around. Field use has shown thathandheld receivers are susceptible to high bit error rates while moving, or when there are bodies in motionin close proximity to the receiver. If your SIGNALpro is in an area of high RF levels (greater than –40dBm) you may need to place an attenuator on the RX Input connector.If you are conducting any type of testing other than simple capcode/message collection we strongly urgethat you use an internal receiver, or a direct connection between the transmitter controller and yourSIGNALpro instead of a modified scanner. These devices have very wide front ends and are quitesusceptible to noise.GPS ReceiverGeneral Information:The GPS receiver option includes an 8-channel receiver module and an active mag mount antennamodule. An 18 ft. cable is provided to connect the receiver inside your SIGNALpro to the Antenna.Acquisition Time (Time ToFirst Fix) It takes approximately 2 minutes for two satellites to be acquired with agood view and relatively clear sky. Another two minutes are requiredfor the oscillator to pull within 50 microseconds of the GPS 1PPS.During this time the OSC LED is Fast Flashing Amber. Finally, anadditional five to ten minutes is needed for the oscillator to pull within500 nanoseconds of the GPS 1PPS. During this time the OSC LED isSlow Flashing Amber. When locked and aligned the OSC LED is SolidGreen.Positioning Accuracy Less than 25 meters, SEP (without SA) [DoD] may invoke SelectiveAvailability (SA), potentially degrading accuracy to 100 mTiming Accuracy (1PPS) 130 nanosec. Observed (1σ) with SA onDuring certain periods of the day there may be limited GPS satellites accessible that could prohibit youfrom being able to obtain accurate positioning readings.Operating Information:The following information applies if you have the internal GPS Receiver option installed in your SIGNALproand choose to activate it. At power-up, the Host CPU programs each DSP input card and attempts tocommunicate with the internal GPS receiver.If the GPS receiver is detected the unit will wait for the GPS receiver to acquire at least two satellites.While in the wait mode the Status LED will fast flash amber. Once the GPS receiver acquires at least twosatellites the unit halts all DSP activity and begins to acquire GPS time and GPS 1PPS from the receiver.
Version 1.7 July, 1999 Hardware 2 - 13Once GPS time is acquired the unit shifts its time base ± the Greenwich Mean Time (GMT) correctionfactor (see page 3-10 for additional information) and begins to lock the oscillator to the GPS 1PPS. TheDSP card(s) continue to hold until the SIGNALpro 1PPS is within 50 microseconds of the GPS 1PPS. TheOSC Lock LED will be slow Flash Red and Fast Flash Amber during this time shift and locking period.When your SIGNALpro is within the 50 microsecond window it programs the new time and allows the DSPcard(s) to begin operating with the new time and the GPS 1PPS. SIGNALpro will continue to pull itsoscillator until it is within 500 nanoseconds of the GPS 1PPS. The OSC Lock LED should be a SlowFlashing Amber. Once the 500 nanosecond threshold is met the OSC Lock LED will turn green.The time associated with received data on all displays will now be the GPS time ± the GMT correction.Once four or more satellites are acquired the Status LED will turn flashing green.It takes approximately 2 minutes for two satellites to be acquired with a good view and relatively clear sky.Another two minutes are required for the oscillator to pull within 50 microseconds of the GPS 1PPS.Finally, an additional five to ten minutes is needed for the oscillator to pull within 500 nanoseconds of theGPS 1PPS.Special Note: It may take fifteen minutes or more for the GPS receiver to acquire an almanac. Longeracquisition times may also take place if the unit is moved a significant distance from its last knownposition. If you wish to discontinue using the GPS option and continue to use your SIGNALpro for“absolute sync” measurements, you should wait to make sure the OSC LED is green before disconnectingthe GPS antenna. This will ensure continuity between measurements made using the GPS receiver andmeasurements made while disconnected. If the OSC LED is not green the internal 10 MHz oscillator isnot locked and aligned with the GPS 1PPS. If you are only interested in relative measurements this willnot matter.Power ConnectionsInstalling SIGNALpro is very simple; connect it to an AC or external DC power source and turn it on.Power requirements are labeled on the unit’s rear panel. SIGNALpro does not require you to change anyexternal voltage settings for AC operation.For AC power: connect the power cord that came with your SIGNALpro to the rear panel AC inputconnection. Plug the other end of the power cord into a receptacle supplying AC power within the rangeprinted on the unit’s rear panel.While the unit is operating from AC power the internal battery will charge. Once fully charged, the internalbattery provides DC battery power for approximately 2 hours of operation for one DSP input card, 1 hourfor two DSP input cards, and less than 1 hour for three or four DSP input cards. Please consider anexternal battery pack for extended battery use.The front panel DC input can be used with the car cigarette lighter adapter that was provided with yourunit. Using this source will not charge the internal battery.Case HandleThe case handle is inserted into the side groove of the case in a position that provides optimum clearancewhile carrying the unit. The handle is locking at 90° above or below the case, and the carrying positionhas a slight detent only. The handle does not lock in the carrying position.

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