Thomson Broadcast and Multimedia 8BUSD5000C 50 Watt Digital Transmitter System User Manual 10 0046 SD5000C

Thomson Broadcast & Multimedia, Inc. 50 Watt Digital Transmitter System 10 0046 SD5000C

Users Guide

SD5000C Manual

COMWAVE DIVISION

All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST.

CREATED: KAS ................................................................2/9/00 CHECKED: DMW............................................................. 2/9/00

RELEASED: DMW

........................................................... 2/9/00

Document #: DOC10-0046

REV: FEB.09.00

Figure 1: SD5000C Transmitting System.

USER’S GUIDE

47266172.00-108

SD5000C Single Channel, 50 Watt Transmitter

COMWAVE DIVISION

Warranty Information

COMWAVE DIVISION

All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST.

Document #: DOC12-0001

REV: DEC.02.99

THOMCAST COMMUNICATIONS, COMWAVE DIVISION TWO YEAR

LIMITED WARRANTY

Thomcast warrants each product of its manufacture to be free from any defect in material and workmanship for a

period of two years after delivery to, and return by the original purchaser. No returns, however, will be accepted

unless accompanied by a written factory return authorization.

The limit of liability under this warranty shall be to repair or replace any product, or part thereof, which proves to be

defective after inspection by Thomcast with the exception of tubes, semiconductor devices, lamps, fuses or

equipment (i.e. modulators) manufactured by others, which are subject to only such loss adjustment as Thomcast

may obtain for the suppliers thereof.

This warranty shall not apply to any Thomcast product which has been modified, physically or electrically damaged,

or to modules which seals have been broken, or any product which has been subjected to conditions exceeding the

applicable specifications or ratings or improper service techniques.

Thomcast will not be liable for any direct or consequential injury, loss or damage incurred through the use, or the

inability to use, any Thomcast product.

Thomcast reserves the right to make design changes to any Thomcast product without incurring any obligation to

make the same changes to previously purchased units.

This warranty is the full extent of the obligation and liability assumed by Thomcast with respect to any and all

Thomcast products. Thomcast neither makes, nor authorizes any person to make, any other guarantee or warranty

concerning Thomcast products.

SD5000C Transmitting System Manual Table of Contents

COMWAVE DIVISION

All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST.

CREATED: KAS................................................................ 1/21/00 CHECKED: DMW .............................................................2/16/00

RELEASED: PRC

..............................................................2/16/00

Document #: DOC11-0046

REV: FEB.16.00

TABLE OF CONTENTS

TITLE DOCUMENT #

Cover Sheet ............................................................................................................DOC10-0046

Warranty Information.............................................................................................DOC12-0001

SECTION 1

Provides information describing the system and how it works

Top Level Description............................................................................................DOC13-0178

Specifications .........................................................................................................47266172.00-306

SECTION 2

Provides information to assist in setting up and turning on your system

Installation Procedure.............................................................................................DOC17-0035

Cabling ...................................................................................................................DOC17-0036

External Interconnections.......................................................................................DOC30-0043

ComView Status Monitoring Interconnections ......................................................DOC30-0005

Turn-On Procedure.................................................................................................DOC26-0050

SECTION 3

Provides information to help with troubleshooting

Troubleshooting......................................................................................................DOC18-0073

Node Addresses......................................................................................................DOC22-0019

Troubleshooting Worksheet ...................................................................................DOC18-0072

Equipment Fusing and Protection...........................................................................DOC18-0075

Power Supply Plug-In Fusing and Protection.........................................................DOC18-0071

Maintenance ...........................................................................................................DOC18-0074

Inspections and Cleaning

Calibrations ............................................................................................................DOC16-0057

SECTION 4

Provides information about individual segments of the system.

We recommend you contact Thomcast1 customer service when repairs are necessary; please do not attempt

to repair any modules and/or boards by yourself.

Sub-Chassis Theory of Operation...........................................................................DOC14-0037

Microcontroller Board Description (hardware)......................................................DOC13-0175

Upconverter Plug-In Module Theory of Operation ................................................DOC14-0039

Front and Rear Panel Descriptions

Specifications .........................................................................................................47266116.00-306

Block Diagram........................................................................................................47266116.00-034

Internal Interconnect...............................................................................................47266116.00-050

U/C Plug-In Module MCU State Machine, Firmware Description ........................DOC13-0187

U/C Plug-In Module Firmware Description...........................................................DOC13-0188

1 DOC20-0001 provides detailed contact information. International phone 001-570-474-6751, USA & Canada phone 1-800-266-9283.

SD5000C Transmitting System Manual Table of Contents

COMWAVE DIVISION

All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST.

CREATED: KAS................................................................ 1/21/00 CHECKED: DMW .............................................................2/16/00

RELEASED: PRC

..............................................................2/16/00

Document #: DOC11-0046

REV: FEB.16.00

LO Plug-In Module Theory of Operation...............................................................DOC14-0038

Front and Rear Panel Descriptions

Specifications .........................................................................................................47266052.00-306

Block Diagram........................................................................................................47266183.00-034

Internal Interconnect...............................................................................................47266183.00-050

LO Plug-In Firmware Description..........................................................................DOC13-0184

Power Supply Plug-In Module Theory of Operation..............................................DOC14-0036

Front and Rear Panel Descriptions

Specifications .........................................................................................................47266099.00-306

Block Diagram........................................................................................................47266099.00-034

Internal Interconnect...............................................................................................47266099.00-050

Power Supply Plug-In Embedded Controller .........................................................DOC13-0173

System Controller Firmware ..................................................................................DOC13-0185

Power Amplifier Segment Theory of Operation.....................................................DOC14-0008

Amplifier Segment State Flow Diagram ................................................................DOC21-0006

Firmware Flowchart ...............................................................................................DOC21-0005

Internal Interconnect...............................................................................................66-306-01

SECTION 5

Provides contact & return information, as well available options.

Customer Service....................................................................................................DOC20-0001

Power Amp Segment Return Packaging.................................................................DOC20-0002

SDxxxxC Transmitter Series Top Level Description

COMWAVE DIVISION

All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST.

CREATED: KAS ................................................................1/30/00 CHECKED: PRC...............................................................1/31/00

RELEASED: PRC

............................................................. 2/10/00

Document #: DOC13-0178

REV: FEB.01.00

TOP LEVEL DESCRIPTION

The high power single channel (HPSC) transmission system generates a digitally modulated average power signal

on all MDS, MMDS, and ITFS channels. The SD2500C generates 2-25 watts average power while the SD5000C

generates 5-50 watts average power1. The system architecture is based on advanced transistor technology, low loss

power combining, and distributed control and power conversion. Some unique advantages of this new design are

flexibility/scalability, lower downtime, and lower operating costs. The modular structure of this system allows for

quick and easy replacement of malfunctioning plug-in modules, which means less downtime and convenient

scalability. The high efficiency design and small size decreases operating expenses.

The transmitting system consists of a sub-chassis, upconverter plug-in module, LO plug-in module, power supply

plug-in module, a front-end power supply, and power amplifier segments. Digital transmission techniques provide

superior performance over analog methods, with reduced susceptibility to noise and co-channel interference.

Advanced quadrature amplitude modulation provides exceptional throughput and spectral efficiency. The RF signal

path of the system is shown below in Figure 1 and the system AC/DC power distribution is depicted in Figure 3.

This upgradeable series of transmitters provides maximum space efficiency and a modular system architecture. This

allows the transmitter to be easily upgraded from 2 watts, using from one to four power amplifier segments at 12.5

watts each, to a total of 25 or 50 watts average output power, depending on model. Similarly, it may also be

downgraded; and, the power amplifier segments may be used elsewhere or kept as spares for hot replacement. As

the output power is modified, the model name and FCC identifier will change respectively. The FCC ID label will

be replaced with each upgrade, as needed; refer to Figure 2 for label location.

One of the most prevalent user benefits of this series of transmitters is hot replacement, i.e. should a power amplifier

segment be operating below parameters and need replaced, hot replacement allows the transmitter to continue

operating with only slight power loss and little to no change in the noise floor. Similarly, should a plug-in module

need replaced only a brief interruption will occur when it is removed and transmission will continue as soon as the

replacement is plugged-in.

1 For modulation scheme other than QAM the ouptut power may need to be derated to keep the spectral occupancy according the FCC rules.

SDxxxxC Transmitter Series Top Level Description

COMWAVE DIVISION

All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST.

CREATED: KAS ................................................................1/30/00 CHECKED: PRC...............................................................1/31/00

RELEASED: PRC

............................................................. 2/10/00

Document #: DOC13-0178

REV: FEB.01.00

SPLITTER

POWER

AMPLIFIER

SEGMENTS

[1 TO 4]

UPCONVERTER

MODULE COMBINER OUTPUT

COUPLER

Figure 1: System RF signal path.

SDxxxxC Transmitter Series Top Level Description

COMWAVE DIVISION

All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST.

CREATED: KAS ................................................................1/30/00 CHECKED: PRC...............................................................1/31/00

RELEASED: PRC

............................................................. 2/10/00

Document #: DOC13-0178

REV: FEB.01.00

FCC ID: CHP8BUSD2500C

MODEL SD2500C

2-25 WATTS AVG POWER TRANSMITTER

FCC ID: CHP8BUSD5000C

MODEL SD5000C

5-50 WATTS AVG POWER TRANSMITTER

FCC ID: CHP8BUSD5000C

MODEL SD5000C

5-50 WATTS AVG POWER TRANSMITTER

Figure 2: Location of FCC ID label.

DC POWER

FAN

SECONDARY

POWER SUPPLY, 10 VDC

VAC

AC POWER

FRONT END

POWER SUPPLY, 48 VDC

PS LO UP

CONVERTER

Figure 3: AC and DC power distribution.

SD5000C Transmitting System Specifications – 47266172.00

COMWAVE DIVISION

All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST.

CREATED: DMW..............................................................3/19/99 CHECKED: KAS ...............................................................2/7/00

RELEASED: AAC

............................................................. 2/8/00

Document #: 47266172.00-306

REV: P1

SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE

SD5000C TRANSMITTING SYSTEM SPECIFICATIONS

Parameter Specification Notes / Test Conditions

DIGITAL

Average Output Power 5 - 50 Watts 223-1 PN data sequence (at transmitter output)

IF Input Frequency 44 MHz Other frequency options available

Impedance/Connector

Input

Output 75 Ω/BNC-female

50 Ω/N-female

Average Input Power -15 dBm ± 0.5 dB 223-1 PN data sequence (at transmitter output)

Output Frequency 1850 - 3600 MHz In select bands

Frequency Response1≤ ±0.25 dB FC ±2.6 MHz

Measured at channel combiner output

Frequency Stability ≤ ±500 Hz

≤ ±1 Hz (Optional GPS)

Carrier to Noise (C/N) ≥ 55 dB

Hum and Noise ≤ -60 dBc

Group Delay2≤ ±15 ns FC ±2.6 MHz

Measured at channel combiner output

Digital Modulation

Error Vector Magnitude 2, 2 (EVM) ≤ 2.0% 64-QAM/8-VSB @ 5.06 Msps RMS average

over 12,500 symbols

Measured at channel combiner output

Digital Modulation

Signal to Noise Ratio 2,3 (SNR) ≥ 30 dB 64-QAM/8-VSB @ 5.06 Msps RMS average

over 12,500 symbols

Measured at channel combiner output

Magnitude Linearity

(AM-AM conversion) ≤ ±0.125 dB Measured at channel combiner output

Phase Linearity

(AM-PM conversion) ≤ ±0.75°Measured at channel combiner output

Adjacent Channel Interference3, 4

(FCC ATV Spectral Mask) Sidelobe power spectral density (PSD)

≤ -38 dB at channel edge; decreasing to

≤ -60dB at ±3 MHz from channel edge

Relative to in-band average PSD measured @

100 KHz RBW at the channel combiner output

Harmonics5≤ -60 dBc Relative to unmodulated carrier power

measured @ 100 KHz RBW at the channel

combiner output

Spurious Products6≤ -60 dBc Relative to unmodulated carrier power

measured @ 100 KHz RBW at the channel

combiner output

RF Output Regulation ≤ ± .2 dB Measured at transmitter output

SSB Phase Noise

Direct measurement of microwave LO = -85 dBc/Hz @ 10 KHz offset

= -110 dBc/Hz @ 10 KHz offset Optional

Standard (recommended for digital

transmission)

1 Upconverter amplifier drawer with optional group delay and frequency equalizer @ the output of the non-adjacent channel combiner.

2 Or equivalent threshold BER measurement.

3 Spectral occupancy per FCC ruling for both analog and digital

4 Measured with a non-adjacent channel combiner, notch filter and optional IF equalizer module.

5 Undesired signal power 2 dB higher than the nominal PSD of the adjacent spectral regions that is harmonically related to unmodulated carrier

6 Undesired signal power 2 dB higher than the nominal PSD of the adjacent spectral regions that is harmonically related to internal system

signals such as clock, LOs, etc.

SD5000C Transmitting System Specifications – 47266172.00

COMWAVE DIVISION

All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST.

CREATED: DMW..............................................................3/19/99 CHECKED: KAS ...............................................................2/7/00

RELEASED: AAC

............................................................. 2/8/00

Document #: 47266172.00-306

REV: P1

SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE

Parameter Specification Notes / Test Conditions

ANALOG

VISUAL PERFORMANCE

Output Power 15 - 150 Watts Peak Sync Adjustable from 10 to 100% of peak sync

power

Output Frequency Any 6, 7, or 8 MHz Channel 1850-3600 MHz

In select bands

Emission 5M75C3F or per CCIR

Impedance/Connector

Input

Output 75Ω/F female

50Ω/N female

Input Level Video 1 VP-P ± 6dB

IF Input Level

Impedance/Connector -8 dBm peak ± 2 dB

75O / female BNC

Frequency Stability = ± 500 Hz

= ± 1 Hz (Optional GPS)

Frequency Response7, 8, 9= ± 1 dB FCC Multiburst video pattern

Group Delay 8, 10 Per FCC 73.687(a)(3) or per CCIR Sin(x)/x video pattern

Harmonics = -60 dBc Measured in 30 KHz RBW at transmitter

output relative to visual carrier (unmodulated

carriers)

Spurious Products8= -60 dBc (out of band) Measured in 30 KHz RBW at transmitter

output relative to visual carrier using 75% color

bars video pattern

Intermodulation Distortion (IM3)10 = -60 dBc (in band) Measured in 100 KHz RBW at transmitter

output relative to visual carrier using red field

video pattern

Differential Gain8, 10 = 3% NTC-7 composite video pattern

Differential Phase8, 10 = 2°NTC-7 composite video pattern

Sync Pulse Amplitude8, 10 = ±5% NTC-7 composite video pattern

Luminance Non-linearity8, 10 = 3% NTC-7 composite video pattern

Weighted SNR8, 10 = 55 dB Quiet Line - Line 12

Hum and Noise8, 10 = 60 dB

K Factor 2T8, 10 = 2% NTC-7 composite video pattern

Incidental Carrier Phase8, 10

Modulation (I.C.P.M.) = 3°NTC-7 composite video pattern

RF Output Regulation = ± 0.2 dB

SSB Phase Noise

Direct measurement of microwave LO = -85 dBc/Hz @ 10 KHz offset

= -110 dBc/Hz @ 10 KHz offset Standard

Optional (recommended for digital

transmission)

7 Using TVM-102 modulator.

8 Spectral occupancy per FCC ruling for both analog and digital

9 Factory video/audio performance test limits may include up to 50% of the test demodulator measurement uncertainty.

10 In band intermodulation specification is based on 15 dB visual to aural ratio. Contact factory for specification change due to other ratios

SD5000C Transmitting System Specifications – 47266172.00

COMWAVE DIVISION

All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST.

CREATED: DMW..............................................................3/19/99 CHECKED: KAS ...............................................................2/7/00

RELEASED: AAC

............................................................. 2/8/00

Document #: 47266172.00-306

REV: P1

SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE

Parameter Specification Notes / Test Conditions

AURAL PERFORMANCE

Output Power11 15 dB visual/aural ratio

+0.5 dB to -2 dB Measured at transmitter output

Other ratios available upon request

IF Input Level

Impedance/Connector -23 dBm peak ± 2 dB

75O / female BNC Combined visual and aural

Emission 250KF3E or per CCIR

Inter Carrier Frequency Accuracy = ± 50 Hz relative to visual carrier

Frequency Response12, 13

Mono

Stereo = ± 1 dB 30 Hz to 15 KHz

= ± 1 dB 50 Hz to 105 KHz w/o pre-

emphasis

Pre-emphasis 50 or 75 microseconds (defeatable)

Deviation ±25 KHz (System M/N) (±50 KHz Stereo)

±50 KHz (System B/G/D/K/I) NICAM

and IRT Stereo compatible

Harmonic Distortion13, 14 = 1%

FM Noise13, 14 = -60 dB

Audio Input Level13

Mono @ ±25 KHz deviation

Mono @ ±50 KHz deviation

Stereo @ ±50 KHz deviation

-10 to +10 dBm into 600Ω

-10 to +10 dBm

GENERAL

Power Requirement 230 VAC ±10%; 50/60 Hz; =150014 VA

Operating Temperature 0°C to +50°CFrequency stability and equipment

functionality guaranteed

Specified Temperature Range 13° to +33°CAll Specified parameters guaranteed

Relative Humidity 95% non-condensing

Vertical Rack Requirement 10.5” Does not include modulator

Dimensions 10.5” H x 19” W x 29” D

26.67cm H x 48.26 cm W x 73.66 cm D

Approximate Shipping Weight 96 lb (43.5 kg) Fully loaded

TO VIEW SPECIFICATIONS OF INDIVIDUAL SEGMENTS OF THIS SYSTEM CLICK BELOW:

SUB-CHASSIS

POWER SUPPLY PLUG-IN MODULE

UPCONVERTER PLUG-IN MODULE

LO PLUG-IN MODULE

11 In band intermodulation specification is based on 15 dB visual to aural ratio. Contact factory for specification change due to other ratios

12 Using TVM-102 modulator

13 Factory video/audio performance test limits may include up to 50% of the test demodulator measurement uncertainty.

14 Switching power supply is power factor corrected.

SDxxxxC Series of Transmitters Installation Procedure

COMWAVE DIVISION

All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST.

CREATED: KAS ................................................................2/10/00 CHECKED: DMW............................................................. 2/10/00

RELEASED: PRC

............................................................. 2/10/00

Document #: DOC17-0035

REV: FEB.10.00

INSTALLATION

UNPACKING INFORMATION

While unpacking, carefully compare packing list with the equipment, checking for in-transit damage at the same time.

Should any damage be noted, notify the freight carrier at once to file a freight claim. Do not discard any packing material

until told to do so by the carrier. Also, notify Thomcast Communications Inc., Comwave Division of any damages or of

missing materials from the shipment.

Retain original boxes and internal packing materials to adequately protect equipment to be returned to

the factory for repairs, upgrades, or modifications.

ENVIRONMENTAL CONSIDERATIONS

The equipment can be safely operated in ambient temperatures of -30 to +50 degrees Celsius (-22 to +122 degrees

Fahrenheit). However, moderate temperatures generally extend equipment life. Although the equipment may be operated

with relative humidity of up to 95%, the equipment must be protected from conditions, which cause condensation within the

equipment.

If a rear door is used to secure the rack cabinet, forced ventilation through the cabinet is required (600 cfm minimum per

transmitter is recommended). An air or temperature interlock should be incorporated for protection against interruption of

ventilation. The area should be kept dry and clean.

There should be sufficient space in front of the transmitter cabinet for the serviceman and test equipment. A minimum of

36” behind the cabinet should be free for rear cabinet access and air movement. Also, ample room must be available at the

cabinet rear for cable placement.

SAFETY CONSIDERATIONS

This equipment utilizes a grounding plug on all power cords. For personal safety, do not defeat

this safety feature. As with all similar types of equipment, high voltage can be accessed when

the chassis cover is removed. Special care should be given in areas of fuses, line switches, and

power supplies.

Modern high power solid state equipment contains low output voltage power supplies with very high current capability. To

prevent severe burns, avoid contact of rings, watches etc., with these circuits. When servicing the transmission line and

antenna, care must be taken to avoid exposure to high-energy microwave.

PHYSICAL INSTALLATION

Mount the sub-chassis into the rack with the provided front panel screws; be sure to properly align the rear support. Slide

each plug-in module into its location until it’s fully seated. Once plug-in is place, tighten the front panel thumb screws to

assure that the plug-in remains securely in place and provide proper grounding. After all plug-ins are in securely in place,

connect the LO output connector of the LO plug-in to the LO input connector of the upconverter plug-in via the SMA cable

packed with the LO plug-in module.

The transmitter requires 10.5 inches of vertical rack space (not including a modulator). Generally, all equipment is mounted

in close proximity in the same rack for the convenience of cabling.

SDxxxxC Series of Transmitters Installation Procedure

COMWAVE DIVISION

All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST.

CREATED: KAS ................................................................2/10/00 CHECKED: DMW............................................................. 2/10/00

RELEASED: PRC

............................................................. 2/10/00

Document #: DOC17-0035

REV: FEB.10.00

INSTALLATION OF THE POWER AMPLIFIER SEGMENTS

The power amplifier segments slide into the sub-chassis on nylon slides and connect to the motherboard via floating

connectors. The key-lock switch, located on the segment’s front panel, must be in the OFF position in order to plug the

segment in. This is to ensure that there is no arcing between connections before the segment is fully engaged. Once the

segment is slid into place, thumbscrews on the segment’s front panel are provided to secure it to the sub-chassis and to

provide ground connection. The key-lock switch may now be turned to the ON position to apply power to the segment.

Once the key-lock switch is turned on, the segment will automatically set the gain and currents of the amplifier.

SYSTEM GROUNDING

For proper system operation, it is imperative that the system be adequately grounded. Each individual equipment rack

requires grounding to the main building ground. When bolting ground wires to racks, sand finish to remove paint ensuring a

good bond.

SDxxxxC Series Cabling

COMWAVE DIVISION

All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST.

CREATED: KAS ................................................................2/10/00 CHECKED: DMW............................................................. 2/14/00

RELEASED: PRC

............................................................. 2/14/00

Document #: DOC17-0036

REV: FEB.10.00

SDxxxxC SERIES CABLING

This section explains cabling and interconnects for this series of transmitters. Refer to document # DOC30-0043 for

pictorial.

SUB-CHASSIS REAR PANEL (TRANSMITTER):

♦ IF INPUT:

An input signal is required for operation. Connect the IF INPUT of the transmitter to the IF OUTPUT of

the modulator or other source. Use RG59/U 75 O cable.

♦ RF OUT:

Cable the RF OUTPUT signal from the transmitter to the spectral shaping assembly, channel combiner, or

notch filter. In an agile transmitter the RF OUTPUT is cabled to the spectral shaping assembly or the

broadband input of the channel combiner network. Use ½-inch super flex cable.

♦ FREQ REF IN:

An externally applied frequency reference signal is an option. This signal can originate from an optional

reference drawer or from another transmitter that contains an internal reference oscillator, which can drive

up to three additional transmitters. Use RG59/U 75 O cable.

FRONT PANELS:

Connect the LO output of the LO plug-in

module to the LO input of the upconverter

/ amplifier plug-in module.

Figure 1: Cabling the LO signal.

COMVIEW INTERCONNECTIONS

ComView interconnections are achieved through six-conductor telephone cables with RJ-11 connectors at each end.

The first cabling harness exits the PC and enters the ComView port on the rear of the transmitter, refer to DOC30-

0043 for connector location.

In systems with multiple transmitters another harness is cabled from the net output of the first transmitter to the net

input of the second transmitter. This daisy chain effect continues to the last transmitter in the rack. At the last

transmitter in the rack the termination switch is put in the “term” position. Refer to the system interconnect

diagram, document # DOC30-0005, for more detail on daisy chain cabling.

EXTERNAL INTERCONNECTIONS, SDxxxxC Series

COMWAVE DIVISION External Interconnections for the SDxxxxC Series

All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST.

CREATED: KAS 2/10/00 CHECKED: DMW 2/14/00 RELEASED: PRC 2/14/00

Document #: DOC30-0043 REV: FEB.10.00 1

SUB-CHASSIS REAR PANEL

IF Input Signal

RF Output

Super-flex cable

In from ComViewa

Out to ComViewa

Termination Switch

OPTIONAL Agile

Controller

Local RS-485

communication

Freq Ref In

NOTES: a) These are interchangeable.

COMWAVE DIVISION

All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST.

CREATED: KAS 1/18/99 CHECKED: DMW 1/18/99 RELEASED: PRC 1/18/99

Document #: DOC30-0005 REV: NOV.11.99 ECO #: 98-116 1

COMVIEW STATUS MONITORING INTERCONNECTIONS

COMWAVE

STATUS

MONITORING

SYSTEM

NOTE: Position

switch to TERM for last

drawer in the series

LAST DRAWER IN

SERIES

TO FINAL

DRAWER IN THE

SERIES

TERM

OUT

NETWORK END

TERMINATION NET NET

TERM

OUT

NETWORK END

TERMINATION NET NET

TERM

OUT

NETWORK END

TERMINATION NET NET

TERM

OUT

NETWORK END

TERMINATION NET NET

ComView Status Monitoring Interconnections

Turn-On Procedure for the SDxxxxC Series of Transmitters

COMWAVE DIVISION

All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST.

CREATED: KAS ................................................................2/10/00 CHECKED: PRC............................................................... 2/10/00 RELEASED: DMW............................................................ 2/14/00

Document #: DOC26-0050

REV: FEB.10.00

TURN-ON PROCEDURE

INITIAL TURN-ON PROCEDURE

1. Plug the AC line in.

2. Ensure all external interconnections are appropriately connected.

3. Turn the power switch on the rear of the transmitter to the “ON” position.

4. All modules perform an automatic start up program.

♦ Upconverter Plug-in Module

A lamp test operation is performed. All chassis front panel LED’s are illuminated for approximately 1

second then darkened. The lamp test allows a quick verification that all front panel LED’s are functioning.

In addition, the lamp test is a clear outward sign that the MCU board is receiving power, is executing the

firmware program, and has recovered from RESET. Shortly after the lamp test, the LED’s will display

chassis status as determined by firmware tests. Document # DOC13-0188 discusses the firmware in more

detail.

♦ LO Plug-in Module

When the LO module is turned on, the code executes an initialization process. This process provides a

lamp test, and displays the channel number on the front panel eight-segment LED display. An internal

reference is adjusted to operational frequency, and the synthesizer chip is programmed with the

operational frequency that was previously set into the microprocessor’s non-volatile memory.

Additionally, the working arrays and structures of the application are set into RAM. After the initialization

program completes, the code enters a simple state machine to judge and operate the LO module.

Document # DOC13-0184 discusses the firmware in more detail.

♦ Power Supply Plug-in Module

When power is initially supplied to the power supply module a lamp test is performed. The two front

panel LED’s will flash on then off, after which the LED’s remain lit, verifying operation.

5. Once the start up program is complete the equipment is functional.

NORMAL OPERATION

The following LED’s confirm normal operation:

LO plug-in module

ë DC POWER – continuously illuminated green

ë LO Ø LOCK - unlit

Power supply plug-in module

ë POWER - continuously illuminated green

ë DC POWER - continuously illuminated green

Refer to the troubleshooting section of this manual for more information about the above LED’s.

Turn-On Procedure for the SDxxxxC Series of Transmitters

COMWAVE DIVISION

All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST.

Document #: DOC26-0050

REV: FEB.10.00

Power Amplifier Segment

Operation is accomplished by turning the key-lock switch to the “ON/LOCKED” position.

• The locks are an added safety feature; however, the keys are interchangeable.

The POWER/FAULT LED should continuously illuminate GREEN. If the LED flashes RED, the power amplifier

segment has faulted. After three faults, a failure will occur and the segment will shut down. Turning the key-lock

switch to the “OFF/UNLOCKED” position and then back to the “ON/LOCKED” position will reset it. Should failure

occur again, hot replacement is necessary. Turn the key-lock switch to the “OFF/UNLOCKED” position and pull the

failed segment out of the rack by the handle. Slide a new power amplifier segment into the vacant space, see the

installation procedure for assistance, set the correct node address, see DOC22-0019, and turn the key-lock switch to the

“ON/LOCKED” position.

Troubleshooting for the SDxxxxC Series of Transmitters

COMWAVE DIVISION

All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST.

CREATED: KAS ................................................................2/10/00 CHECKED: AAC.............................................................. 2/15/00RELEASED: PRC .............................................................. 2/16/00

Document #: DOC18-0073

REV: FEB.16.00

SDxxxxC SERIES TROUBLESHOOTING

This series of transmitters is equipped with comprehensive diagnostic circuitry that monitors the status of each plug

in module and power amplifier segments so failures can be readily detected. Observing the front panel LED

diagnostic display, and ComView interface will inform you of the complete operational status. The following lists

explain various failure mode displays and possible solutions.

A 14-pin computer type diagnostic interface connector, labeled J1, is located on the rear of the transmitter to assist

in troubleshooting. Critical power supply, module, and motherboard voltage test points can be accessed/monitored

at this location. Should a failure occur, the combination of diagnostic LED status lights, diagnostic interface voltage

test points, and ComView should help identify the failure.

• Repair of internal modules is not recommended or advised. Contact1 COMWAVE customer support should a

failure occur.

LO PLUG-IN MODULE:

The LED’s listed below continuously illuminate GREEN during normal operation. Absence of a green LED

indicates a missing signal or parameter that results in a controlled automatic shutdown

DC POWER

(No power present)

CAUSES: CHECK FOR: REMEDY:

Plug-in module not seated

properly If LO plug-in module LED’s are unlit,

while the power supply plug-in LED’s

are lit

Remove LO plug-in and push firmly back

in place

Power supply plug-in

module malfunctioning If LO AND power supply plug-in

LED’s are unlit Remove the panel covering the front end

power supply and check the LED’s

Front end power supply

malfunctioning If the LED’s indicate a problem, refer

to Table 1

If no problem is indicated

If the fuse is bad

If the fuse is ok

Contact1 Comwave customer support for

a replacement

Check the rear panel AC fuse

Replace it

Contact1 Comwave customer support

Table 1: Front end power supply alarm indicators & control signals.

Description Signal LED Indicator

Output OK Yes Green

Supply Standby Yes Amber

Supply Fail Yes Red

Current Limit Yes Amber

Overvoltage Yes Red

Overtemp Yes Amber (same as Fan Fail LED indicator)

AC Undervoltage Yes NA

Fan Fail Yes Amber (same as Overtemp LED indicator)

1 DOC20-0001 provides detailed contact information. International phone 001-570-474-6751, USA & Canada phone 1-800-266-9283.

Troubleshooting for the SDxxxxC Series of Transmitters

COMWAVE DIVISION

All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST.

Document #: DOC18-0073

REV: FEB.16.00

The following LED’s remain unlit until a malfunction is detected then they continuously illuminate RED. Loss of

phase lock results in controlled automatic transmitter shut down.

LO Ø LOCK

(Loss of phase lock)

CAUSES: REMEDY:

Reference Level Measure the reference level at the rear of the

transmitter

If the level is low:

Check and tighten all external cables and

harnesses associated with the LO

If the level is OK or still low after checking the

cables:

Contact2 Comwave customer support for a

replacement

POWER SUPPLY PLUG-IN MODULE:

The LED’s listed below continuously operate GREEN during normal operation. Absence of a green LED indicates

a missing signal or parameter that results in a controlled automatic shutdown

POWER

(No power present from the front end power supply)

CAUSES: REMEDY:

Blown fuse, F1, in plug-in module Replace fuse

No DC input from front end power supple Check OEM power supply

Failure in plug-in module Contact2 Comwave customer support for a replacement

DC POWER

(No output power)

CAUSES: REMEDY:

Short circuit or current overload Test 48 pin connector on back plane for short circuits

Find plug-in module that is causing overload by

swapping with like plug-in modules

Failure in plug-in module Contact2 Comwave customer support for a replacement

The upconverter / amplifier plug-in module LCD display provides operating information about each plug-in module,

i.e. ‘PASS’ / ‘FAIL’, as well as a series of measurements, and user adjustments.

To view the status of each plug-in module perform the following steps:

1. Use the keypad on the upconverter / amplifier plug-in, choose select, when Status is displayed in LCD

hit enter.

2. At this point you will be able to “select” the plug-in module of your choice.

3. When you’ve chosen the appropriate module the LCD will display either ‘PASS’ or ‘FAIL’.

4. If it indicates the plug-in has failed, contact2 Comwave for a replacement plug-in, there are no user

troubleshooting steps for the plug-in modules.

2 DOC20-0001 provides detailed contact information. International phone 001-570-474-6751, USA & Canada phone 1-800-266-9283.

Troubleshooting for the SDxxxxC Series of Transmitters

COMWAVE DIVISION

All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST.

Document #: DOC18-0073

REV: FEB.16.00

If the Reflected Power measurement is high, check the following:

1. Output cable

2. Output Notch Filter (present at the output of the system)

3. Cable between Notch Filter and Channel Combiner (if present at the output of the system)

4. Connections to the antenna

If after ensuring the above are properly connected the problem persists, contact3 Comwave customer support.

If the Forward Power measurement is low, check the following:

1. Check the power amplifier segment LED’s; they should be green.

2. Check the status of each of the plug-in module via the keypad on the upconverter / amplifier plug-in front panel,

see above for steps. They should all present a PASS condition.

3. If no amplifier segment or plug-in modules indicate a FAIL condition, use the keypad and LCD to display the

IN-SIGNAL condition.

4. If the IN-SIGNAL status indicates a NO IN-SIGNAL condition, check the signal source.

5. If any power amplifiers segments and / or plug-ins have a FAIL condition, contact Comwave customer support

to report the failure and receive a replacement.

POWER AMPLIFIER SEGMENT

Hot replacement of the power amplifier segment may be required if a failure occurs. To remove a segment, turn the

key-lock switch to the OFF position, loosen the thumbscrews on the segment’s front panel and slide the failed

segment out of the sub-rack. Before the replacement segment can be installed, the node address must be set, refer to

document # DOC22-0019. A set of DIP switches is accessible through the cover of each segment directly behind

the key-lock switch. Set the DIP switches of the replacement segment to the same positions as the failed segment’s

DIP switches. Refer to the installation procedure for assistance when replacing power amplifier segments.

3 DOC20-0001 provides detailed contact information. International phone 001-570-474-6751, USA & Canada phone 1-800-266-9283.

COMWAVE DIVISION Power Amplifier Segment Node Addresses

All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST.

CREATED: KAS 9/16/98 CHECKED: DMW 10/20/98 RELEASED: PRC 10/20/98

Document #: DOC22-0019 REV: DEC.01.99 ECO #: 98-116 1

NODE ADDRESSES

1 to 16 Channels

NOTE: Do not change

node switch Settings 6, 7,

and 8. They should

remain as set by the

factory.

MODULE POSITION NODE ADDRESS NODE SWITCH SETTING

1ON

OFF

5 6

9 10

1110

SDxxxC Series Transmitter Troubleshooting Worksheet

– 47266066 Rear Panel Interface

COMWAVE DIVISION

All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST.

CREATED: AB ..................................................................2/4/00 CHECKED: KAS ...............................................................2/9/00

RELEASED: PRC

............................................................. 2/11/00

Document #: DOC18-0072

REV: FEB.09.00

TROUBLESHOOTING WORKSHEET

This troubleshooting worksheet identifies each interface pin, the associated internal test point, nominal value, and

the expected voltage range. Please fill in all blank spaces completely

J1: Rear Panel

Diagnostic Pin Function Checked Measured Voltage

1Ground

2LO / Front-End Fault

3PS Fault

4Upconv Fault

5Sys Pwr

6REFL Pwr

7+48V Fault Input

8+10V Fault Input

9P.A.S. Reset

10 P.A.S. Standby

11 Amp Seg Fault

12 +12V Output

13 Insignal for Booster

14 Ground

FILL IN ALL THE ABOVE BLANK SPACES COMPLETELY

COMPANY NAME: ________________________ CUSTOMER’S NAME: ________________________

PHONE NUMBER: ________________________ FAX NUMBER: ________________________

MODEL: __________ CHANNEL: ____________ SERIAL NUMBER (REAR PANEL): _____________

SEND RESULTS TO: THOMCAST COMMUNICATIONS, COMWAVE DIVISION

ATTENTION TECHNICAL SUPPORT

TOLL FREE PHONE (U.S.A. & Canada): 1-800-COMWAVE (1-800-266-9283)

International and U.S.A. 1-570-474-67511

FAX 1-570-474-5469

1 International calls must dial the country code before the phone number, i.e. 001-570-474-6751.

SDxxxxC Series Transmitter Fusing & Protection

COMWAVE DIVISION

All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST.

CREATED: KAS ................................................................2/10/00 CHECKED: DMW............................................................. 2/14/00

RELEASED: PRC

............................................................. 2/16/00

Document #: DOC18-0075

REV: FEB.16.00

SDxxxxC SERIES TRANSMITTER FUSING AND PROTECTION

Resettable and replaceable fuses1 are found in this system. Refer to the tables below for fuse locations and values.

Table 1: Transmitter fuse locations.

LOCATION REFERENCE VALUE

Rear Panel Interface Board - 47266066 F1 .5 ampere resettable

Rear Panel AC Input 8 amperes @ 230 VAC

Table 2: Power amplifier segment fuse locations.

LOCATION REFERENCE VALUE

Microcontroller board F1, F2 .75 amperes resettable

Microcontroller board F3 .30 amperes resettable

Microcontroller board F4 .35 amperes resettable

DC - DC converter board F1 10 amperes

Thermal Protection: Thermal protection is accomplished using temperature sensors within individual plug-in

modules. The LO module does not have a temperature sensor. When the temperature exceeds 140° Fahrenheit (60°

Celsius), the sensors inform the microcontroller which then takes the appropriate action, until the unit is sufficiently

cooled.

Interlocks: Interlocks are performed via software applications, see individual plug-in modules firmware description

for more information.

The OEM front end power supply offers the following:

Table 3: Front end power supply alarm indicators & control signals.

Description Signal LED Indicator

Output OK Yes Green

Supply Standby Yes Amber

Supply Fail Yes Red

Current Limit Yes Amber

Overvoltage Yes Red

Overtemp Yes Amber (same as Fan Fail LED indicator)

AC Undervoltage Yes NA

Fan Fail Yes Amber (same as Overtemp LED indicator)

1 Replace only with the same type and rating.

Power Supply Plug-In - Fusing and Protection

COMWAVE DIVISION

All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST.

CREATED: CTS ................................................................1/26/00 CHECKED: KAS ...............................................................1/27/00

RELEASED: CTS

.............................................................. 2/14/00

Document #: DOC18-0071

REV: JAN.27.00

POWER SUPPLY PLUG-IN FUSING AND PROTECTION

This module contains one replaceable fuse1, refer to the table below for fuse location and value.

Table 1: Transmitter fuse locations.

LOCATION REFERENCE VALUE

DC converter board F1 6 amperes @ 117/230 VAC

CURRENT AND VOLTAGE MONITORING

Current sampling is accomplished by measuring the voltage drop across a resistor in series of the load. The voltages

from both sides of the resistor are scaled down in order to keep the measured voltages from the supply voltages of

the operational amplifiers. The voltage differences are first buffered, and then applied to an operational amplifier

configured to measure the difference of the two input voltages.

The output of the differential amplifier is then applied to a non-inverting amplifier to increase the voltage near the

middle of the system controller’s 5 volt analog to digital converter’s range. An integrated circuit containing Zener

and Shottkey diodes protect the inputs of the system controller. The system controller compares this value against

previously calibrated values to determine if the power supply is operating outside of specified parameters.

The input buffers for the current sampling also provide the voltage samples; the buffer’s output is scaled down by

dividing resistors. This provides a sample voltage to the analog to digital converters that is mid-rage between zero

and five volts.

All of the power supply sections operate in a similar manner. The –12 VDC power supply section uses inverting

amplifiers (instead of buffers) with unity gain to convert the sample values to positive representations of the sampled

voltages.

The current and voltage sample outputs are applied to an analog multiplexer integrated circuit. This chip selects the

group of signals that are applied to the microprocessor from a control provided from the microprocessor.

TEMPERATURE SENSING

Temperature sensing is accomplished by a thermal sensing integrated circuit. This integrated circuit outputs an

analog voltage between 0 and 5 volts that corresponds to the relative air temperature.

This analog signal is applied to the analog to digital converter built into the embedded controller. The controller

processes this value and compares it against pre-determined values to control the sequence of events needed when

an over temperature condition arises

1 Replace only with the same type and rating.

Maintenance for the

SDxxxxC Series of Transmitters

COMWAVE DIVISION

All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST.

CREATED: KAS ................................................................2/10/00 CHECKED: DMW .............................................................2/11/00 RELEASED: PRC .............................................................. 2/11/00

Document #: DOC18-0074

REV: FEB.10.00

MAINTENANCE

COMWAVE products have been carefully designed to be maintenance free. Only periodic inspection and cleaning

is necessary.

INSPECTIONS

1. Periodically inspect cooling fans on the rear door of the rack and the heatsinks of the power amplifier segments

for heavy accumulations of dirt and/or insects. Heavy accumulation of foreign debris impedes cooling

effectiveness and could lead to premature failure. Should any debris be detected, shut down the transmitter and

follow the cleaning instructions to remove debris from transmitter.

• The agile transmitter will automatically recover the channel of the transmitter that is being cleaned.

2. After performing routine maintenance, be sure to check the tightness of all cable connections and especially the

integrity of crimp type connectors.

CLEANING

POWER SUPPLY PLUG-IN MODULE:

1. Pull the plug-in out of the sub-chassis and vacuum

the heatsink.

2. Remove the side “snap-on” cover and clean the

front panel fan.

3. Replace the cover.

4. Plug the segment back in.

• Be sure not to bend or damage the fins of the

heatsink during cleaning.

• Keep in mind that when the plug-in module is

removed there will be an interruption in service,

which will be restored immediately upon its return to

the sub-chassis.

HEATSINK

COVER

FAN

Figure 1: Power supply plug-in module.

Maintenance for the

SDxxxxC Series of Transmitters

COMWAVE DIVISION

All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST.

Document #: DOC18-0074

REV: FEB.10.00

HEATSINK

Figure 2: Power amplifier segment heatsink.

POWER AMPLIFIER SEGMENTS:

Pull each power amplifier segment one at a time from the front

of the rack and vacuum the heatsinks. Due to the hot

replacement feature, if one segment is removed at a time, the

transmitter does not need to be turned off. Plug the segment

back in after cleaning.

• Be sure not to bend or damage the fins of the heatsinks

during cleaning.

FAN:

Clean the fan on the rear of the sub-chassis,

removing the fan guard if necessary.

1. Power connection; remove the power

prior to cleaning.

2. To remove the fan guard remove these

screws. 1

Figure 3: Rear panel fan.

Calibrations for the SDxxxxC Transmitter Series

COMWAVE DIVISION

All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST.

CREATED: AAC................................................................2/14/00 CHECKED: KAS ...............................................................2/14/00

RELEASED: PRC

............................................................. 2/16/00

Document #: DOC16-0057

REV: FEB.16.00

CALIBRATIONS FOR THE SDxxxxC TRANSMITTER SERIES

This series of transmitters is designed to perform auto-calibration upon turn-on. Once this is complete if the output

power is incorrect or missing proceed as follows.

FORWARD POWER – UPCONVERTER / AMPLIFIER PLUG-IN MODULE:

1) Make connections as depicted in Figure 1 note 1.

2) Connect a PC with the application file DRIVER_PLUG_IN_CAL_&_ADJUS to the RS-232 port on the front

panel.

3) Initialize DRIVER_PLUG_IN_CAL_&_ADJUS application.

4) Through the program application, specifically in the POWER CONTROL BOX, set the POWER MODE to

MANUAL.

5) With the MANUAL POWER CONTROL sliding button, set power in order to have a reading of 20 dBm

(100mW) at the external power meter. Account for the directional coupler factor.

6) Enter the number 20 in the DRIVER FORWARD POWER SET VALUE field.

7) Press the DRIVER FORWARD POWER CALIBRATE button.

8) On the upconverter plug-in, display the Forward Power measurement by:

a) (Considering the LCD display is in its default state): SELECT (to make the STATUS option of the

STATUS / CALIBRATE screen to flash)

b) ENTER (to display PS / LO / DRIVER status screen)

c) SELECT, SELECT (to highlight the DRIVER STATUS option)

d) ENTER (to display options INSIGNAL / SYSTEM FORWARD POWER / SYSTEM REFLECTED

POWER / DRIVER FORWARD POWER under the DRIVER STATUS menu)

e) SELECT, SELECT and SELECT (to highlight the DRIVER FORWARD POWER)

f) Enter to display the measurement

9) Verify that the reading on the LCD display is consistent with the reading on the external power meter. Output

power of the upconverter plug-in is now calibrated.

10) Close DRIVER_PLUG_IN_CAL_&_ADJUS application and disconnect PC.

11) Return the system to its original interconnections.

Calibrations for the SDxxxxC Transmitter Series

COMWAVE DIVISION

All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST.

CREATED: AAC................................................................2/14/00 CHECKED: KAS ...............................................................2/14/00

RELEASED: PRC

............................................................. 2/16/00

Document #: DOC16-0057

REV: FEB.16.00

Open sub-chassis rear panel

FWD

REFL

* This item should be an N-N male extension PN UG-57B/U or equiv. Substitution of this adapter requires that its insertion loss be known for accurate power measurements.

- 30 dB

Directional

Coupler

TO SPECTRUM

ANALYZER OR TO POWER

METER

50 OHM

TERMINATION

Upconverter / Amplifier Plug-in Front panel

cable

- 30 dB

Directional

Coupler

TO SPECTRUM

ANALYZER OR TO POWER

METER

50 OHM

TERMINATION

NOTES:

1) Connection for upconverter plug-in

calibration.

2) Connection for system calibration.

Figure 1: Calibration interconnections.

FORWARD POWER – SYSTEM:

1) Make connections as depicted in Figure 1 note 2.

2) Connect a PC with the application file DRIVER_PLUG_IN_CAL_&_ADJUS to the RS-232 port on the front

panel.

3) Initialize DRIVER_PLUG_IN_CAL_&_ADJUS application.

4) Through the program application, specifically in the POWER CONTROL BOX, set the POWER MODE to

MANUAL.

5) With the MANUAL POWER CONTROL sliding button set power in order to have a reading of 44 dBm (25W)

for the SD2500C and 47 dBm (50W) for the SD5000C at the external power meter. Account for the directional

coupler factor.

6) Enter the same number as above in the SYSTEM FORWARD POWER SET VALUE field.

7) Press the SYSTEM FORWARD POWER CALIBRATE button.

8) On the upconverter plug-in, display the Forward Power measurement by:

a) (Considering the LCD display is in its default state): SELECT (to make the STATUS option of the

STATUS / CALIBRATE screen to flash)

b) ENTER (to display PS / LO / DRIVER status screen)

c) SELECT, SELECT (to highlight the DRIVER STATUS option)

Calibrations for the SDxxxxC Transmitter Series

COMWAVE DIVISION

All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST.

CREATED: AAC................................................................2/14/00 CHECKED: KAS ...............................................................2/14/00

RELEASED: PRC

............................................................. 2/16/00

Document #: DOC16-0057

REV: FEB.16.00

d) ENTER (to display options INSIGNAL / SYSTEM FORWARD POWER / SYSTEM REFLECTED

POWER / DRIVER FORWARD POWER under the DRIVER STATUS menu)

e) SELECT, SELECT and SELECT (to highlight the DRIVER FORWARD POWER)

f) Enter to display the measurement

9) Verify that the reading on the LCD display is consistent with the reading on the external power meter. Output

power of the System is now calibrated.

10) Set POWER MODE to AUTO

11) Slide AUTO POWER CONTROL to recover power to the value previously read at the external power meter (if

necessary).

12) Re-check the upconverter plug-in LCD reading.

13) Close DRIVER_PLUG_IN_CAL_&_ADJUS application and disconnect PC.

14) Return the system to its original interconnections.

SYSTEM REFLECTED POWER CALIBRATION:

1) If you haven’t already performed the system forward power calibrations do so now, as described above,

omitting steps 13 and 14.

2) Put the system in stand-by with the program application.

3) On the upconverter plug-in, display the Forward Power measurement by:

a) (Considering the LCD display is in its default state): SELECT (to make the STATUS option of the

STATUS / CALIBRATE screen to flash)

b) ENTER (to display PS / LO / DRIVER status screen)

c) SELECT, SELECT (to highlight the DRIVER STATUS option)

d) ENTER (to display options INSIGNAL / SYSTEM FORWARD POWER / SYSTEM REFLECTED

POWER / DRIVER FORWARD POWER under the DRIVER STATUS menu)

e) SELECT, SELECT and SELECT (to highlight the DRIVER FORWARD POWER)

f) Enter to display the measurement

4) Swap FORWARD and REFLECTED POWER cables coming out of the output coupler.

5) Enter the number 44 for an SD2500C system and 47 for an SD5000C system in the SYSTEM REFLECTED

POWER SET VALUE field.

6) Put the system in TRANSMIT MODE.

a) While performing steps 7 and 8 the system will shut down due to the high-reflected power simulated

measurement, this is necessary; if these steps are completed within 5 seconds this will not occur.

7) Press the SYSTEM REFLECTED POWER CALIBRATE button.

8) Verify that the reading on the LCD display is consistent with the reading on the external power meter.

Reflected power of the System is now calibrated.

9) Once the system shuts down because of the high reflected power simulated measurement. Put it in STAND-BY

mode.

10) Put the FORWARD and REFLECTED POWER cables back to their original positions.

11) Set the system mode to TRANSMIT

12) Close DRIVER_PLUG_IN_CAL_&_ADJUS application and disconnect PC.

13) Return the system to its original interconnections.

Sub-Chassis Theory of Operation - 47266170

COMWAVE DIVISION

All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST.

CREATED: AB ..................................................................2/01/00 CHECKED: KAS ...............................................................2/02/00

RELEASED: PRC

............................................................. 2/11/00

Document #: DOC14-0037

REV: FEB.02.00

SUB-CHASSIS THEORY OF OPERATION

The sub-chassis contains guide rails and houses the following components. Refer to Figure 1 for numerical

references.

1) One driver assembly, which is made up of three plug-in modules

a) LO plug-in

b) Power supply plug-in

c) Upconverter plug-in

The plug-in modules slide into the chassis on nylon card guides and connect to the driver back

plane board using a guide pin and a 48-position DIN connector.

The power supply plug-in module connects using a guide pin, 48-position DIN connector, and a 6-

position header. The header uses a DPDT push button switch to turn on the feed power only after

the plug-in module is fully inserted; this is to ensure that there is no arcing between connections

before the plug-in module is fully engaged. It also certifies that the module is properly grounded

before any voltage is applied.

2) A front-end DC power supply

This power supply is an OEM product and is hot swappable.

3) Up to four power amplifier segments

Each amplifier segment slides into the chassis on nylon slides and connects to the amplifier

motherboard via floating connectors10. The key-lock switch, located on the segments front panel,

must be in the OFF position in order to plug it in. This assures that all connections, mechanical

and electrical, are made before the amplifier is turned on.

Once the plug-in modules are in place, thumbscrews on the front panels are fastened to the sub-chassis to secure

them and provide a reliable ground connection. The key-lock switch on the amplifier segment is turned to the ON

position to apply power to the segment.

Floating OSP connectors9,10 mounted on the back plane board, the back panel of the chassis, the back of the plug-in

modules, and the back of the power amplifier segments, provide the interface for RF input and output. See

respective plug-in module theory of operation documentation for the location of the connectors.

4) Three communications boards

a) 47266064 - driver back plane board

See DOC13-0176 for more information about this board

b) 47266145 - amplifier motherboard and back plane

See DOC13-0183 for more information about this board

c) 47266165 - power supply back plane

See DOC13-0186 for more information about this board

Sub-Chassis Theory of Operation - 47266170

COMWAVE DIVISION

All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST.

CREATED: AB ..................................................................2/01/00 CHECKED: KAS ...............................................................2/02/00

RELEASED: PRC

............................................................. 2/11/00

Document #: DOC14-0037

REV: FEB.02.00

SD2500C system shown

47266170 Sub-Chassis

11c

NOTE: Boards 4b & 4c are

not visible in these photos.

(up to 4)

Figure 1: 47266170 sub-chassis.

Refer to Figure 2 for numerical references.

5) RF Splitter

This component divides the microwave signal of the driver in, up to 4, outputs to the power

amplifier segments. It can be used as a divider by 2, 3, or 4, depending on the total output power

of the equipment.

6) Power Combiner

The power combiner merges the output signal from the power amplifier segments into one

microwave output.

7) Directional Coupler

This piece of the equipment is used to measure forward and reflected power.

8) Power Detector

The power detector transforms the forward and reflected power signals from the directional

coupler into DC voltage to be processed in the upconverter / amplifier module.

Sub-Chassis Theory of Operation - 47266170

COMWAVE DIVISION

All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST.

CREATED: AB ..................................................................2/01/00 CHECKED: KAS ...............................................................2/02/00

RELEASED: PRC

............................................................. 2/11/00

Document #: DOC14-0037

REV: FEB.02.00

Open sub-chassis rear panel

Figure 2: Sub-chassis, inside rear.

FRONT AND REAR PANEL DESCRIPTION

Front panel

The sub-chassis has no front panel; see respective plug-in module theory of operation documentation for a

discussion of front panel features.

Rear panel

Refer to Figure 3 for numerical references.

1) FAN: A rear mounted 48VDC fan provides system cooling. AC fan is optional.

2) RF OUT: RF output connector (Female N type).

3) COMMUNICATION PORTS: RJ11 phone jack connectors and a termination switch from the RS-485 board used

for communication to ComView.

4) J1: Female 14 pin header for diagnostics monitoring.

5) J2: RJ11 phone jack connector for OPTIONAL Agile controller.

6) J3: RJ11 phone jack connector for Local RS-485 communication.

7) FUSE: Main line fuse - 8amperes (used for 220V system only).

8) POWER SWITCH: Turn system on and off.

9) AC INPUT: AC Line input power cord connector.

10) FREQ REF IN: 75ohm Female F connector, external 10 MHz reference signal input.

11) FCC ID LABEL: Federal Communications Commission identification label.

12) IF INPUT: 75ohm Female BNC connector, input signal from an external source.

13) Not applicable in this model.

Sub-Chassis Theory of Operation - 47266170

COMWAVE DIVISION

All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST.

CREATED: AB ..................................................................2/01/00 CHECKED: KAS ...............................................................2/02/00

RELEASED: PRC

............................................................. 2/11/00

Document #: DOC14-0037

REV: FEB.02.00

14) Not applicable in this model.

1234

FCC ID: CHP8BUSD5000C

MODEL SD5000C

5-50 WATTS AVG POWER TRANSMITTER

Figure 3: Sub-chassis rear panel.

Microcontroller Board (MCU) Description - 47266058

COMWAVE DIVISION

All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST.

CREATED: CPU................................................................12/10/99 CHECKED: KAS ...............................................................1/27/00

RELEASED: PRC

............................................................. 2/10/00

Document #: DOC13-0175

REV: JAN.27.00

MICROCONTROLLER BOARD (MCU) DESCRIPTION

An MCU (microcontroller unit) circuit board assembly is contained within each plug-in module. The MCU

assembly hardware consists of a microcontroller IC and associated memory, a CPLD IC, and various analog and

logic support circuitry; the MCU operates under the control of a firmware program executed by the microcontroller.

Each plug-in module has it’s own firmware which is discussed in separate documents that can be found in the

respective modules section of the manual.

A variety of on-chip utilities and interfaces are integrated in the MCU, easing the support circuitry requirements and

simplifying the interfacing of the MCU to other circuit board resources. See Figure 1 for a block diagram of the

board.

The MCU is operated in an expanded mode, with program and data memory external to the MCU IC. The MCU

uses a 16 bit external data bus for interfacing to the memories. The firmware operating program is stored in IC U3,

a FLASH ROM memory. The storage is arranged and accessed in word (2 byte) mode. An address bus is provided

by the MCU to access the FLASH memory. The MCU and CPLD ICs provide additional control signals.

Two RAM ICs provide run-time data storage. U6 and U8 are 512 Kbyte static RAMs. The RAMs are served by the

MCU address bus and various support signals provided by the MCU and CPLD. Each RAM provides an 8 bit data

bus for reads and writes. By joining the two RAM data busses as low and high bytes on the 16 bit data bus, full 16

bit accesses are achieved.

Various glue logic, I/O, and register support functions are provided by IC U4, an in-circuit programmable CPLD.

The CPLD contains I/O registers that allow writes to and reads from MCU board signals such as AUX_OUT_A

through AUX_OUT_F, and ANALOG_ALARM_1 through ANALOG_ALARM_3. The CPLD registers are within

the MCU memory map and are accessed by the MCU through interfaces to the MCU address and data busses.

The CPLD register signals are used for accessing various on and off-board devices see Table 1.

Table 1: CPLD register signals.

Signal name Type (I/O) Application

Upconverter Local Oscillator System Controller

CS_A through CS_F ODAC address, AGC &

ALC module control SPI user enable N/A

AUX_OUT_A through

AUX_OUT_F OPS and ALC module

control; user interface User Interface; fault

alarm N/A

Logic_in_6, 9, 10, 11 I/O IF detect, fault alarm,

remote and reflected

shutdown

Phase Lock Agile Controller

interface; back plane

interface

MUX_0, 1, 2 OAnalog mux address Analog mux address Analog mux address

Analog_alarm_0, 1, 2 IVgs testing N/A N/A

CPLD input signals Analog_alarm 0, 1, and 2 are sourced from the outputs of analog comparators IC U11A, B, and

C. The comparators test three analog signals from board connector J103 against reference voltages provided by IC

U1, a bank of multiple digital potentiometers. This system provides for the monitoring of negative voltages.

Microcontroller Board (MCU) Description - 47266058

COMWAVE DIVISION

All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST.

CREATED: CPU................................................................12/10/99 CHECKED: KAS ...............................................................1/27/00

RELEASED: PRC

............................................................. 2/10/00

Document #: DOC13-0175

REV: JAN.27.00

Positive analog voltages applied to connector J103 are conditioned and fed to the MCU A/D converter. Single ended

voltages from J103 are amplified and band-limited by op amps contained in U9 and supporting circuitry. The

outputs of these single-ended circuits are fed to A/D inputs. Differential analog voltages are amplified with fixed

gain and band-limited with op amp ICs U10, U14, U17, and supporting circuitry. These op amp circuits convert the

differential input signals to single ended signals. The single ended signals are selected for monitoring through analog

multiplexers. As each signal is selected for monitoring, it is passed to a buffer and finally to an A/D input. All A/D

inputs are protected through voltage and current limiting circuits.

The MCU assembly provides two serial communication ports. Depending on application, either two RS-232 ports or

one RS-232 and one RS-485 port may be required. Jumper JK101 is used to select the function of Port 2. When

JK101 is placed in the 1-2 position, Port 2 is an RS-232 port; in the 2-3 position, it is an RS-485 port.

Table 2: Communication Ports.

Application

Upconverter Local Oscillator System Controller

Port 1- RS-485

Port 2- RS-232 Port 1- RS-485

Port 2- RS-485

DRAWN:

RELEASED:

CHECKED:

DWG. NUMBER:

TITLE:

REV: A

A-47266058-034

BLOCK DIAGRAM,

MICRONCONTROLLER BOARD

CPU / 12/99

CPU / 2/9/00

REV Description

KAS / 2/9/00 Scale:

none Sheet

1of 1

COMWAVE DIVISION

ECO#

NAME/DATE

MCU - 68HC812A4

CPLD

RAM FLASH

ROM

To Front Panel

To local

backplane

network

Serial

address

Data (16)

Signal

Conditioning

Buffering

RS-2321

RS-485

To serial

peripherals

Analog Inputs

A/D in

Logic inputs/

outputs

Logic

RS-485

System Controller Only

To ComView

NOTES:

1. When used as system controller, no RS-232

board is used, two RS-485 boards are used.

Figure 1: MCU block diagram.

Upconverter Plug-In Module Theory of Operation - 47266116

COMWAVE DIVISION

All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST.

CREATED: AAC................................................................2/4/00 CHECKED: KAS ...............................................................2/7/00

RELEASED: PRC

............................................................. 2/11/00

Document #: DOC14-0039

REV: FEB.07.00

UPCONVERTER PLUG-IN MODULE THEORY OF OPERATION

This plug in module is joined to the main chassis via

three slide rails and two thumbscrews. Several modules

make up this plug-in and are accessible through its two

detachable covers. The covers, together with the rear

panel fan, are part of the forced-convection cooling

system.

The basic function of this plug-in is to convert an IF

input signal to the microwave frequency range,

containing the proper spectrum content and proper

power level to excite subsequent stages of amplification.

To accomplish this, the appropriate level IF signal, local

oscillator signal and power supply voltages must be

delivered to this plug-in. For detailed descriptions on

each of the plug-in modules, see respective module

documentation.

Refer to the block diagram, 47266116-034, for a

functional layout of the modules contained within the

plug-in; refer to Figure 2 and/or Figure 3 for the actual

location of referenced connectors and user accessible

interfaces.

IF and RF signals to and from the plug-in module are

sent through coaxial connectors and cables on the front

and back panels, while signals in a lower frequency

range go through a 48-pin connector located on the

back-panel. IF and RF signals are sent between modules

within the plug-in similarly, via coaxial cables. Signal

traffic other than IF/RF, such as, power supply voltages,

detected power voltages, and serial data from the MCU

board, are distributed between the modules using the

distribution board.

Figure 1: Upconverter plug-in module.

The IF signal enters the plug in and is routed to the IF linear processor where delay and frequency response are

adjusted, as needed. The processed IF signal is then delivered to the microwave converter module, where frequency

conversion takes place; filtering and power amplification follow the conversion inside this module. Embedded

between amplifier stages of the microwave converter module, the microwave pre-corrector generates

intermodulation products with opposite characteristics of those generated in the last amplifiers of the system,

minimizing the overall third and fifth order products of the system RF output. The IPA module provides a final

amplifier stage that boosts the signal before it leaves the plug-in.

Two major level closed loop controls are present in this plug-in module; one is to keep the constant 0dBm total

power at the microwave precorrector module. In this case, a power-sensing device is installed inside the module,

right before the J5 connector, the resultant proportional voltage is then fed to the distribution module where an

integrated circuit (U18) compares with a reference and driver PIN attenuators inside the IF linear processors

accordingly.

The second closed loop control is to compensate the gain variation of the amplifier chain up to the transmitter

output. Both integrators and PIN attenuators are found inside the µW precorrector module and the voltage

proportional to the power level is fed from an external detector module.

Upconverter Plug-In Module Theory of Operation - 47266116

COMWAVE DIVISION

All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST.

CREATED: AAC................................................................2/4/00 CHECKED: KAS ...............................................................2/7/00

RELEASED: PRC

............................................................. 2/11/00

Document #: DOC14-0039

REV: FEB.07.00

The distribution board also receives the voltage proportional to the temperature that is generated by a temperature

sensor module; this module is usually placed on the last power amplification stage.

The interface board is responsible for providing +24, +12, -12, and +8V to the plug-in, as well as voltages of

forward and reflected detected power for further processing. This board is also the channel through which serial data

is exchanged between this, other plug-ins, and the rest of the system.

The front panel PCB has a serial port, which can be used for testing, adjusting or controlling most of the plug-in

functions with the help of a personal computer. Together the front panel overlay keyboard and the display board

provide a user interface capable of controlling a limited number of functions inside the upconverter plug-in module;

they also allow for the presentation of a series of measurements in the LCD display.

FRONT AND REAR PANEL DESCRIPTIONS

Front Panel

Refer to Figure 2 for numerical references.

1) THUMB SCREWS: Secure module to the

sub-chassis and provide a reliable ground

connection; loosen to remove module for

replacement or repair.

2) LCD DISPLAY: Displays a series of

measurements, user adjustments, and

general status information.

3) LO INPUT: Female SMA 50O connector

used to input the LO signal from the LO

plug-in module. LO level must be 13 dBm

±1 dB.

4) UHF/IF SAMPLE: Female SMA 50O

connector used to test the signal level after

exiting the IF linear processor module.

5) RF SAMPLE: Female SMA 50O

connector used to test the output level.

6) COMM PORT: RS-232 Communications

port for communication to a PC.

7) KEYPAD: User’s selection keys:

a) SEL – select, provides user with

scrolling capabilities.

b) ENT – enter, allows user to choose an

option.

c) ESC – escape, allows user to go back

to previous screen.

d) SAVE – allows user to store new

Figure 2: Upconverter plug-in front panel.

Upconverter Plug-In Module Theory of Operation - 47266116

COMWAVE DIVISION

All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST.

CREATED: AAC................................................................2/4/00 CHECKED: KAS ...............................................................2/7/00

RELEASED: PRC

............................................................. 2/11/00

Document #: DOC14-0039

REV: FEB.07.00

settings or adjustments.

8) POTENTIOMETER: Used in conjunction with the LCD display and keypad this allows the following user

adjustments:

a) Power Level

b) Output Power

c) Frequency Response 1

d) Frequency Response 2

e) Precorrection

i) Distribution Generation

ii) Cancellation 1

iii) Cancellation 2

iv) Phase

9) HANDLE: Assists in removing module from sub chassis.

Rear Panel

Refer to Figure 3 for numerical references.

1) FAN: 18 CFM DC for plug-in module

cooling only.

2) 48 PIN DIN: Interface to the back plane,

(all power, control and diagnostics)

3) GROUND / ALIGNMENT STUD:

Ensures that proper ground is made prior

to engaging the 48 pin DIN; also aids in

the alignment of the module within the

sub-chassis.

4) IF INPUT: Male 50O blind mate

provides interface to the back plane and

allows passage for the IF input signal.

5) Not applicable in this model.

6) Not applicable in this model.

7) RF OUTPUT: Male 50O blind mate

supplies the RF output signal to the

transmitting system of amplifier cage,

depending on model type.

Figure 3: Upconverter plug-in rear panel.

Upconverter Plug-In Module Specifications – 47266116.00

COMWAVE DIVISION

All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST.

CREATED: AAC................................................................3/19/99 CHECKED: KAS ...............................................................2/7/00

RELEASED: AAC

............................................................. 2/8/00

Document #: 47266116.00-306

REV: P1

SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE

UPCONVERTER PLUG-IN MODULE SPECIFICATIONS

Parameter Specification Notes/Test Conditions

IF INPUT

Digital

Average Input Power -15 dBm ± 2 dB 223-1 PN data sequence (at transmitter output)

IF Input Frequency 44 MHz (center) Other frequency options available

Connector / Impedance Blind Mate / 75 O Mates with floating back-plane connector

Analog (Combined visual and aural)

IF Input Level -8 dBm peak ± 2 dB (Visual

Carrier)

-23 dBm peak ± 2 dB (Aural

Carrier)

Combined visual and aural

IF Input Frequency

Aural Carrier

Visual Carrier 41.25MHz

45.75MHz

Other frequency options available

Connector / Impedance Blind Mate / 75 O Mates with floating back-plane connector

RF OUTPUT

Digital

Average Output Power 20mW to 200mW Function of A.L.C. settings - 223-1 PN data sequence (at

driver output)

Output Frequency 1850 - 3600 MHz In select bands

Frequency Response ≤ ±0.25 dB FC ±2.6 MHz

Measured at Sub-rack output

IM3 (dBc) < 50 16dBm RF Output Power (64QAM) Relative to in-band

average PSD measured @ 100 KHz RBW

Carrier to Noise (C/N) ≥ 55 dB

Hum and Noise ≤ -60 dBc

Group Delay ≤ ±15 ns FC ±2.6 MHz

RF Output Connector

Digital Modulation

Error Vector Magnitude (EVM) ≤ 2.0% 64-QAM/8-VSB @ 5.06 Msps RMS average over 12,500

symbols

Measured at Sub-rack output

Digital Modulation

Signal to Noise Ratio (SNR) ≥ 30 dB 64-QAM/8-VSB @ 5.06 Msps RMS average over 12,500

symbols

Measured at Sub-rack output

Magnitude Linearity

(AM-AM conversion) ≤ ±0.125 dB Measured at Sub-rack output

Phase Linearity

(AM-PM conversion) ≤ ±0.75°Measured at Sub-rack output

RF Output Regulation ≤ ± .2 dB Measured at Sub-rack output

Connector / Impedance Blind Mate / 50 O Mates with floating back-plane connector

Analog Performance

Output Power 100mW - 1 Watt Peak Sync Adjustable from 10 to 100% of peak sync power

Output Frequency Any 6, 7, or 8 MHz Channel

1850 - 3600 MHz In select bands

Emission 5M75C3F or per CCIR

Upconverter Plug-In Module Specifications – 47266116.00

COMWAVE DIVISION

All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST.

CREATED: AAC................................................................3/19/99 CHECKED: KAS ...............................................................2/7/00

RELEASED: AAC

............................................................. 2/8/00

Document #: 47266116.00-306

REV: P1

SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE

Parameter Specification Notes/Test Conditions

IM3 (dBc) < 50 Two Tones @ 13dBm/c (∆f = 6MHz) – RF Output

Connector

RF Output Regulation = ± 0.2 dB

DC POWER REQUIREMENTS

Voltages / Currents +12 VDC ±.5 @ 2.5A max

+8 VDC ±.5 @ 1.2A max

-12 VDC ±.5 @ 150ma max

Connector 48 conductor, 3amps / circuit

minimum Interfaces to back-plane

ENVIRONMENTAL

Cooling Forced air-cooled, minimum of 18

CFM required Forced air-cooled drawing ambient air through the intake

on the front of the Up-Converter Plug-In. and exhausting

out the rear.

Operating Temperature 0°C to 50°C

Relative Humidity 0 to 95% non-condensing

ALARMS / INDICATORS / AJUSTMENTS / CONTROLS

RF Output Failure Alarm DRIVER FAILURE Low (TTL

Low) = RF Output Failure Signal available at back-plane

Over- Temperature Alarm DRIVER FAILURE Low (TTL

Low) = Over Temperature Signal available at back-plane and

Visible via LCD Display (Software/pending)

In-Signal Indicator PRESENT or NOT PRESENT Visible via LCD Display (Software/pending)

Transmit Indicator ON AIR or OUT OF AIR Visible via LCD Display (Software/pending)

Power Supply Status /

Measurements PASS or FAIL / V scale Visible via LCD Display (Software/pending)

RF Power Measurements % Scale (dBm scale option) Visible via LCD Display (option is Software/pending)

Temperature Indicator °C scale Visible via LCD Display (Software/pending)

Frequency Response (low side)

Adjustment Potentiometer allows adjustment of

low side IF frequency response Access via front panel

Frequency Response (high side)

Adjustment Potentiometer allows adjustment of

high side IF frequency response Access via front panel

Distortion Level Adjustment Potentiometer allows adjustment of

pre-distortion level Access via front panel

ALC Level Adjustment Potentiometer allows adjustment of

ALC. Access via front panel

Detector Threshold Control RS-232 interface Set via laptop computer with VB application, Access via

front panel

Input Level Control RS-232 interface Set via laptop computer with VB application, Access via

front panel

Frequency Response (low side)

Control RS-232 interface Set via laptop computer with VB application, Access via

front panel

Frequency Response (high side)

Control RS-232 interface Set via laptop computer with VB application, Access via

front panel

Distortion Level Control RS-232 interface Set via laptop computer with VB application, Access via

front panel

Linearity Cancellation 1 Control Potentiometer allows adjustment of

linearity cancellation Access via front panel

Linearity Cancellation 2 Control RS-232 interface Set via laptop computer with VB application, Access via

front panel

Upconverter Plug-In Module Specifications – 47266116.00

COMWAVE DIVISION

All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST.

CREATED: AAC................................................................3/19/99 CHECKED: KAS ...............................................................2/7/00

RELEASED: AAC

............................................................. 2/8/00

Document #: 47266116.00-306

REV: P1

SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE

Parameter Specification Notes/Test Conditions

Distortion Phase Control RS-232 interface Set via laptop computer with VB application, Access via

front panel

ALC Level Control RS-232 interface Set via laptop computer with VB application, Access via

front panel

Stand-by Control RS-232 interface Set via laptop computer with VB application, Access via

front panel

Reset Control Momentary switch to reset on-

board Microprocessor Access via front panel

Function Switch

Stand-by

Meter Off

+11V P.S.

FWD PWR

REFL PWR.

Places system in stand-by mode

No indication on analog meter

Displays proper DC voltage of the

main switching power supply

Displays forward power on analog

meter

Displays reflected power on analog

meter

Access via front panel

Analog Meter

+11V P.S.

FWD PWR

REFL PWR

Indicates proper DC voltage of the

main switching power supply

Indicates forward power

transmitted

Indicates reflected power

transmitted

Visible via front panel

PHYSICAL

Mechanical Dimensions 4.75”H x 4.2”W x 17.5”D1

12.07 cm H x 10.67 cm W x 44.45 cm D

Weight 6 lbs. (3Kg)

Front Panel Color Matches Sherwin William’s Paint

No.

Light Gray ……..F63TXA2555

Medium Gray ….F63TXA4841

Paint mix number 4303 identifies store location when

added to Paint No.

Lexan overlay color matched as indicated

1 Measured without ground pin on rear panel and front panel handle; add approximately 2” for these.

Microwave Precorrector - 47266073

Front Panel Board - 47266086

Distribution board - 47266084

AGND

VGS_MON_2

VGS_MON_3

-12V

IPA_DETECTED_PWR

DRIV_FIN_AMP_CURR

GND

AGND

DRIVER_RF_MEASURE

+12V

+12v

LCD Display board - 750063

DIGITIAL GND

+5VDIGITAL

VDC

R/W

LED +

LED -

Microwave

Converter

47266075

VGS_MON_1

MIX_AMP_CURR

-12V

AGND

UW_CONVERTER_PWR

OUT_AMP_CURR

RF_CORR_DET_IN

AGND

OUT_AMP_CURR

INTER_AMP_CURR

DRAWN:

RELEASED:

CHECKED:

DWG. NUMBER:

TITLE:

REV: P2

A-47266116-050

INTERCONNECT, DRIVER PLUG-IN MODULE

AAC 02/14/00

Name / date

???????? Scale:

none Sheet

1 of 2

COMWAVE DIVISION

REV Description ECO#

NAME/DATE

DIGITAL GND

+5V DIGITAL

10 USERPOT

SELECT

RS232_TXD

RS232_RXC

ENA_RS232

SAVE

ESC

ENTER

J2 P2

DIGITAL GND

SELECT

ENTER

ESC

SAVE

Front Panel

Overlay -

47266003

P1P1

P2P2

DRIV_FIN_AMP_CURR

IPA -

47266077

ADAPT_CANCEL

ALC_INT_EXT_CTRL

PWR_LIMIT

ALC_MAN_CTRL

PHASE

CANC2

DIST_GEN

CANC1

ALC_ON_OFF

ALC_AUTO_CTRL

Distribution board - 47266084

ENCODER_GAIN_CTL

+12V

GND

RS485_LOCAL_T-

FWDPWR_1

REMOTE_SHDN

GND

BOOSTER_INSIGNAL

+8V

+12V

+24V

RS485_LOCAL_R-

RS485_LOCAL_T+

RFLTDPWR_1

+8V

+12V

IF Linear Processor -

47266081

AGND

IF_THRESHOLD

IF_ATT

FREQ_RESP#2

+12VA

AUX_ATT_2

FREQ_RESP#1

+12VA

DRAWN:

RELEASED:

CHECKED:

DWG. NUMBER:

TITLE:

REV: P2

A-47266116-050

INTERCONNECT, DRIVER PLUG-IN MODULE

AAC 02/14/00

Name / date

???????? Scale:

none Sheet

2 of 2

COMWAVE DIVISION

REV Description ECO#

NAME/DATE

GND

+5VA

TEMPERATURE

Temperature Sensor

- 47266203

Fan

J4P1

J2J1

IN_SIGNAL

-12V

RS485_LOCAL_R+

GND

AGC_LEVEL

DRIVER_FAULT

GND

Interface Board - 47266149

DRIV_FIN_AMP_CURR [3,4]

GND

SYS_FWD_DET_PWR [4]

SYS_RFL_DET_PWR [2,4]

USER_POT [5]

ADAPT_CORR [5]

VDD_IO [3]

OUT_AMP_CURR [3,4]

DRIVER_RF_MEAS [4]

+8v [3.5]

MIX_AMP_CURR [3,4]

INTER_AMP_CURR [3,4]

AGC_LEVEL [4,5]

ADAPT_CANCEL [4]

TEMP [3]

VGS_MON_1 [4]

VGS_MON_2 [4]

VGS_MON_3 [4]

8VSW [3]

DAC_2_CS [1]

GND

DO [5]

D1 [5]

D2 [5]

D3 [5]

DAC_1_CS [1]

D7 [5]

DAC_3_CS [1]

D4 [5]

D5 [5]

D6 [5]

AGC_ON_OFF [2]

ALC_ON_OFF [2]

AGC_INT_EXT_CTRL [2]

ALC_INT_EXT_CTRL [2]

EN [5]

RS [5]

R/W [5]

20 E [5]

J102

J103

Microcontroller Board - 47266058

DRIVER_FAULT [5]

GND

ENTER [5]

ESC [5]

CH [5]

ENA_RS232 [5]

ENCODER_GAIN_CTRL [5]

REMOTE_SHDN [5]

SAVE [5]

SELECT [5]

IN_SIGNAL [4,5]

FST_RLCTD_SHTD [2]

SS [1]

LC_DAC [1]

MOSI [1]

CLOCK [1]

SUPPLIES_EN [3]

20 ALC_LOOP_SELECT_2 [2,4]

J101

GND

RS485_LOCAL_R- [5]

RS485_LOCAL_T+ [5]

RS485_LOCAL_T- [5]

RS485_LOCAL_R+ [5]

RS232_TXD [5]

RS232_RXD [5]

-12V [3,4,5]

+12VA [2,3,4,5]

20 +12VA [2,3,4,5]

J100

Microcontroller Board - 47266058

Upconverter Plug-In Module, MCU State Machine

Firmware Description – 47266058.00

COMWAVE DIVISION

All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST.

CREATED: CPU................................................................1/10/00 CHECKED: KAS ...............................................................2/9/00

RELEASED: PRC

............................................................. 2/11/00

Document #: DOC13-0187

REV: FEB.09.00

UPCONVERTER PLUG-IN MCU STATE MACHINE,

FIRMWARE DESCRIPTION

The MCU assembly and its firmware monitor various parameters, conditions, and commands in the plug-in module.

The firmware uses the pass/fail states of the parameters to determine the operating state of the plug-in.

In the normal AUTO mode of operation, the operating state of the plug-in is used to determine the control settings

for the plug-in. Following a RESET, the firmware enters an INIT (initialization) state, in which the initialization of

registers and network operations is performed, DOC13-0188 discusses this in more detail. Following INIT, the plug-

in enters the STANDBY state. In STANDBY, the RF power output of the upconverter plug-in is disabled, and

settings for the various internal modules are set for minimum gain.

Unless commanded to remain in STANDBY, the plug-in will enter the STABILIZE state, allowing the unit to come

up to desired operating power without transient failures. After a short stabilization period, the plug-in enters the

OPERATE state. In this state, full output power is produced, and pre-correction and gain controls are operational.

As the conditions of the measured parameters change, the state is modified accordingly. For example, if signal

presence is lost, the plug-in will enter the STANDBY state and will remain in that state until the signal returns. Once

signal returns, if no other failure conditions exist, the plug-in will transition through STABILIZE to the OPERATE

state. If a reflected power sample is found outside of the passing range while the plug-in is in OPERATE, the state is

changed to LIMP to attempt to provide reduced output power, thereby reducing the reflected power.

Other failures that may result in unsafe operation or damage to the plug-in or system cause the plug-in to enter the

FAILED state. The firmware may perform multiple tests of a failing parameter before deciding to enter FAILED to

reduce the effects of transients. In the FAILED state, RF output power and DC supply to the plug-in output

amplifiers are disabled. The firmware cannot exit the FAILED state without user intervention.

During factory calibration or customer site installation, the plug-in may be operated in MANUAL mode. In

MANUAL mode, the operating state is continually updated, but the state is not used to determine the control settings

of the plug-in. The control settings remain set as they were when the MANUAL mode was entered until overridden

by user commands. The user may adjust key plug-in settings to optimize plug-in performance and modify behavior,

and the settings may be stored in non-volatile memory or discarded.

Upconverter Plug-In Firmware Description – 47266116.00

COMWAVE DIVISION

All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST.

CREATED: CPU................................................................1/10/00 CHECKED: KAS ...............................................................2/9/00

RELEASED: PRC

............................................................. 2/11/00

Document #: DOC13-0188

REV: FEB.09.00

UPCONVERTER PLUG-IN FIRMWARE DESCRIPTION

The microcontroller (MCU) assembly and its operating program (firmware) handle internal monitoring functions in

the plug-in. The flow of execution of the program used in this chassis is described below. The firmware program is

contained in non-volatile memory on the MCU board.

The firmware begins execution after a RESET or power-up. The firmware instructs the MCU to initialize various

MCU registers and hardware ports, including the A/D converter. Following this, a lamp test operation is performed.

All chassis front panel LED’s are illuminated for approximately 1 second then darkened. The lamp test allows a

quick verification that all front panel LED’s are functioning. In addition, the lamp test is a clear outward sign that

the MCU board is receiving power, is executing the firmware program, and has recovered from RESET. Shortly

after the lamp test, the LED’s will display chassis status as determined by firmware tests.

Following the lamp test, program variables and measurement records are initialized. The initialization assures

integrity of records used to hold test data and communication messages. Following the initialization, the firmware

starts the MCU network functions. This process configures the MCU communication port, and instructs the MCU

how handle incoming messages. The firmware also checks an internal memory register to determine whether an RS-

485 network node address for this MCU assembly has been set. The network node address will either be the value

found in this register, or if no value has been set, a default value.

All aforementioned tasks are performed once after RESET. Following these tasks, a program loop is entered that

handles monitoring and communications tasks, as described below. The loop may be temporarily interrupted by

incoming communication messages. RESET ends the loop and restarts program execution.

The firmware determines the condition of key parameters such as reflected power and signal presence by taking

samples of signals of interest applied to the MCU board. Analog signals are measured using the MCU A/D

converter, while logic inputs are monitored with either the MCU or CPLD . The samples are tested against

numerical limits, and a pass/fail status is determined for each monitored signal. The firmware uses the pass/fail

states of the parameters to determine the operating state of the plug-in. The operating state of the plug-in is used to

determine the control settings for the plug-in. See documents DOC13-0187 and DOC21-0021 for a description of

the firmware state machine and its effect on the control of the plug-in.

The measurements of parameters and other operating information (status) are compiled by the firmware in a

memory table. This status table may be sent as a communication message to the System Controller or to a PC-based

user interface application. The System Controller or the user application sends a status query message to the plug-in

and receives the status table in response.

At any time during firmware execution, a communication message may be received by the MCU. This results in an

interruption of program execution, allowing the firmware to quickly collect and store the incoming message.

Firmware execution then returns to the point following the interruption. After a complete message has been

collected by the firmware, a response is constructed by the firmware and sent by the MCU under firmware

command.

In addition to the status query, other commands may be issued to the plug-in:

• STANDBY command - causes output power to be disabled

• ON AIR command - re-enables the plug-in output power

• RESET command - causes the firmware to restart execution

Additional commands are used during factory alignment and customer site installation to optimize equipment

performance. The commands provide calibration settings that are stored by the MCU in non-volatile memory. The

calibration settings are accessed during firmware operation to set the various plug-in systems into the calibrated

operating condition after a RESET.

LO Plug-In Module Theory of Operation - 47266183

COMWAVE DIVISION

All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST.

CREATED: DMW..............................................................2/02/00 CHECKED: KAS ...............................................................2/02/00

RELEASED: DMW

........................................................... 2/02/00

Document #: DOC14-0038

REV: FEB.02.00

LO PLUG-IN MODULE THEORY OF OPERATION

The LO plug-in module consists of a microwave

synthesizer, microcontroller board, distribution

board, and display board. It determines the

microwave upconverter mixer input and

transmitter output operating frequency. The

operating frequency is determined by

programming of the phase locked loop

frequency synthesizer. Miniature DIP switches

SW1 and SW2 set N counter and A counter PLL

programming inputs. A 10 MHz input reference

signal3 determines the frequency stability of the

PLL, see Figure 2 for numerical reference.

Figure 1: LO plug-in module.

The synthesizer module uses a microwave prescaler, dual modulus prescaler, and internal dividers to reduce the 10

MHz reference and microwave voltage controlled oscillator (VCO) frequencies to 25 kHz for the 09-049 series and

09-093 version; 125 KHz for the 09-073 series, 09-097 & 09-098 versions; or 200 KHz for the 09-092 version.

These signals are applied to separate inputs of a phase detector. Input signals of equal phase generate no change in

output. Should the VCO deviate in frequency, a phase shift is detected causing an integrator/low pass filter to

generate a DC control voltage proportional to the offset frequency. This control voltage is applied to the microwave

VCO to return it to the selected frequency.

The microwave local oscillator frequency is derived by adding (or subtracting in certain cases) the desired

transmitter channel frequency to the incoming IF frequency:

EXAMPLE: Visual Output Frequency +Visual IF =Microwave LO Frequency

2501.25 MHz +45.75 MHz =2547 MHz

Aural Output Frequency +Aural IF =Microwave LO Frequency

2505.75 MHz +41.25 MHz =2547 MHz

LO Plug-In Module Theory of Operation - 47266183

COMWAVE DIVISION

All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST.

CREATED: DMW..............................................................2/02/00 CHECKED: KAS ...............................................................2/02/00

RELEASED: DMW

........................................................... 2/02/00

Document #: DOC14-0038

REV: FEB.02.00

FRONT AND REAR PANEL DESCRIPTIONS

Front panel

Refer to Figure 1 for numerical

references.

1) CHANNEL SELECTION

INDICATOR: Not applicable in this

model.

2) PROGRAMMING KEYPAD: Not

applicable in this model.

3) LO SAMPLE: Not applicable in this

model.

4) LO OUTPUT: Provides LO Drive to

the upconverter plug-in module.

5) COMM PORT: Phone jack connector

from the RS 485 Board used for

communication to ComView Network.

Not applicable in this model.

6) LED DISPLAY PANEL:

a) DC POWER: Indicates that

+12V DC Power is present to the

module.

i) GREEN = power present

ii) UNLIT = no power –

denotes a problem

b) LO LEVEL: Not applicable in

this model.

c) UHF LEVEL: Not applicable in

this model.

d) REFERENCE: Not applicable in

this model.

Figure 2: LO plug-in front panel.

e) LO ∅ LOCK: Indicates phase lock of the synthesizer or DRPLO module.

i) UNLIT = phase lock present

ii) RED = loss of phase lock

f) UHF ∅ LOCK: Not applicable in this model.

7) HANDLE: Assists in removing module from sub chassis.

8) THUMBSCREWS: Secure module to the sub-chassis and provide a reliable ground connection; loosen to

remove module for replacement or repair.

LO Plug-In Module Theory of Operation - 47266183

COMWAVE DIVISION

All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST.

CREATED: DMW..............................................................2/02/00 CHECKED: KAS ...............................................................2/02/00

RELEASED: DMW

........................................................... 2/02/00

Document #: DOC14-0038

REV: FEB.02.00

Refer to Figure 2 for numerical

references.

1) 48 PIN DIN: Interface to the back

plane, (all power, control and

diagnostics)

2) GROUND / ALIGNMENT STUD:

Ensures that proper ground is made

prior to engaging the 48 pin DIN;

also aids in the alignment of the

module within the sub-chassis.

3) FREQ REFERENCE INPUT: Male

50O blind mate provides interface to

the back plane and allows passage for

the 10 MHz reference signal.

4) Not applicable in this model.

5) Not applicable in this model.

6) Not applicable in this model.

Figure 3: LO plug-in rear panel.

LO Plug-In Module Specifications – 47266052.00

COMWAVE DIVISION

All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST.

CREATED: DMW..............................................................3/19/99 CHECKED: KAS ...............................................................2/7/00

RELEASED: DMW

........................................................... 2/8/00

Document #: 47266052.00-306

REV: P1

SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE

LO PLUG-IN MODULE SPECIFICATIONS

Parameter Specification Notes/Test Conditions

REFERENCE INPUT

Frequency 10MHz External , internal reference optional

Level 0 dBm ± 5 dB ( +48 dBmV) ± 5 dB

Stability

Internal

External ±1.5PPM minimum

1x10-7 PPM minimum

After five minute warm up

Connector / Impedance Blind Mate / 50 O Mates with floating back-plane connector

RF OUTPUT

Frequency Tuning Range 1.8 to 3.7GHz In select bands

Tuning Step Size 50KHz Other options available

Power Level + 7dBm or +17dBm, ±2dB

Harmonics -20dBc minimum

Non-Harmonic Spurious 100Hz < ƒoffset < 10KHz , -70dBc

10KHz < ƒoffset < 100KHz , -60dBc

Stability Based on frequency reference

SSB Phase Noise Option 1

SSB Phase Noise Option 2

≤110 dBc/Hz @ 10 KHz offset

≤85 dBc/Hz @ 10 KHz offset

Option 1 Standard (recommended for digital

transmission)

Other options available

Connector / Impedance SMA female / 50 O Mates with upconverter module LO input connector

Local Oscillator Front Panel

Sample 20dB below output level Access via front panel

Sample Connector /

Impedance SMA female / 50 O Should be terminated when unused

DIGITAL TUNING

Format Serial (parallel only with p/n47266183)

Number of bits Varies Depends addressed component

Level TTL

Latch Enable Required (not required with

p/n47266183)

Latch Enable pulsewidth 3.5 ns minimum

DC POWER REQUIREMENTS

Voltages / Currents +24 VDC ±.5 @ 50mA max

+12 VDC ±.5 @ 750mA max

-12 VDC ±.5 @ 100mA max

+8 VDC ±.5 @ 100mA max

VCO supply &

Support circuits

Connector DIN connector. 48 conductor, 1amp /

circuit minimum Interfaces to back-plane

ENVIRONMENTAL

Operating Temperature -30°C to 50°C

Relative Humidity 0 to 95% non-condensing

LO Plug-In Module Specifications – 47266052.00

COMWAVE DIVISION

All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST.

CREATED: DMW..............................................................3/19/99 CHECKED: KAS ...............................................................2/7/00

RELEASED: DMW

........................................................... 2/8/00

Document #: 47266052.00-306

REV: P1

SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE

Parameter Specification Notes/Test Conditions

ALARMS / INDICATORS / AJUSTMENTS / CONTROLS

LO Fault TTL Low = fault condition Signal available at back-plane

Level Normal Indicator Green LED, ON= Normal Level Visible via front panel, not available w/ part #

47266183

DC PWR Presence Indicator Green LED, ON= DC power present Visible via front panel

Phase (∅) Lock Indicator Red LED, ON= Loss of ∅ Lock Visible via front panel

Frequency reference

Indicator Red LED, ON = Frequency reference

fault Visible via front panel, not available w/ part #

47266183

Channel Selection Indicator Green 7-segment display (2-digit) Visible via front panel, not available w/ part #

47266183

Output level Control RS-232 interface- allows adjustment of

LO Level Attenuator, Range 15dB Set via laptop computer with VB application, Access

via front panel, not available w/ part # 47266183

Channel up/down control Momentary switch key pad Access via front panel, not available w/ part #

47266183

Frequency Control RS-232 interface Set via laptop computer with VB application, Access

via front panel, not available w/ part # 47266183

PHYSICAL

Mechanical Dimensions 5.03”H x 1.47”W x 17.5”D

12.78 cm H x 3.73 cm W x 44.45 cm D

Weight 3 lbs. (1.36Kg)

Front Panel Color Matches Sherwin William’s Paint No.

Light Gray ……..F63TXA2555

Medium Gray ….F63TXA4841

Paint mix number 4303 identifies store location when

added to Paint No.

Lexan overlay color matched as indicated

OPTIONAL UHF UPCONVERTER STAGE

INPUT

IF Input -15dBm avg. or –8dBm peak ± 2 dB 44 MHz center frequency standard

Connector / Impedance Blind Mate / 50 O Mates with floating back-plane connector

OUTPUT

UHF Output -15dBm avg. or –8dBm peak ± 3 dB 351 MHz center frequency standard

UHF Connector / Impedance Blind Mate / 50 O Mates with floating back-plane connector

LO Output +7dBm ± 2 dB 395 MHz LO frequency standard

SSB Phase Noise ≤100 dBc/Hz @ 10 KHz offset Standard (recommended for digital transmission)

Other options available

ALARMS / INDICATORS / AJUSTMENTS / CONTROLS

Level Normal Indicator Green LED, ON= Normal Level Visible via front panel

Phase (∅) Lock Indicator Red LED, ON= Loss of ∅ Lock Visible via front panel

EXT REF.

DRAWN:

RELEASED:

CHECKED:

DWG. NUMBER:

TITLE:

REV: A

A-47266183-034

BLOCK DIAGRAM,LO PLUG-IN MODULE

DMW / 2-2-00

PRC / 2-11-00

REV Description

KAS / 2-2-00 Scale:

none Sheet

1of 1

COMWAVE DIVISION

ECO#

NAME/DATE

Front Panel LO Output

Front Panel LO sample

Microwave Synthesizer

09-097

Front Panel Overlay

GND

DN SW

LED 6

UP SW

LED 1

LED 2

LED 3

LED 4

LED 5

Microcontroller

Distribution board

+8V

+12V

GND

+24V

-12V

GND

RS485 Local R-

RS485 Local R+

RS485 Local T-

RS485 Local T+

LO/FRONT END FAULT

GND

+12V

-12V

CLOCK

LATCH ENABLE A

REF TRIM ADJ

DN SW DB

DATA

UP SW DB

LED 1

REFERENCE LEVEL OK

UHF LO LEVEL

VARIABLE FLTR CONTROL 1

ALC REF ADJ

LATCH ENABLE B

LATCH ENABLE C

LATCH ENABLE D

LED 2

LED 4

LED 3

LED 5

LED 6

RS 232

VARIABLE FLTR CONTROL 2

VARIABLE FLTR CONTROL 3

VARIABLE FLTR CONTROL 4

MICROWAVE LO LEVEL

SPDT LOW PASS FLTR CONTROL 1

SPDT LOW PASS FLTR CONTROL 2

EXT REFERENCE PRESENCE

UHF LOCK

MICROWAVE LOCK

VARIABLE ATTEN CONTROL

UHF LEVEL DETECT

RS485 Local R-

RS485 Local R+

RS485 Local T-

RS485 Local T+

LO/FRONT END FAULT

Display board

GND

+12V

CLOCK

LATCH ENABLE D

DATA

DN SW DB

UP SW DB

TXD_RS 232

RXD_RS 232

ENA__RS 232

Synthesizer 09-073-02 OR 09-097-02

GND

N/A

+12V

N/A

MICROWAVE LOCK

UHF Upconverter

OPTIONAL

GND

+12V

VARIABLE ATTEN CONTROL

UHF LEVEL DETECT

LATCH ENABLE C

UHF LO LEVEL

UHF LOCK

CLOCK

DATA

SPARE

GND

DRAWN:

RELEASED:

CHECKED:

DWG. NUMBER:

TITLE:

REV: A

A-47266183-050

INTERCONNECT,LO PLUG-IN MODULE

DMW / 2-02-00

PRC / 2-11-00

KAS / 2-02-00 Scale:

none Sheet

1of 1

COMWAVE DIVISION

REV Description ECO#

NAME/DATE

N/A

LO Plug-In Firmware Description - 47266052

COMWAVE DIVISION

All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST.

CREATED: CTS.................................................................1/24/00 CHECKED: KAS ...............................................................2/02/00 RELEASED: PRC .............................................................. 2/11/00

Document #: DOC13-0184

REV: FEB.02.00

LO PLUG-IN FIRMWARE DESCRIPTION

The firmware controls and monitors the performance of the Local Oscillator plug-in module. Additionally, it

provides status and control capabilities to RS-485 and RS-232 network ports. This firmware is designed to interface

with a calibration program that programs the LO’s frequency and output power into memory, and the firmware sets

the output power and frequency in accordance with these calibration points.

TURN-ON PROCESS

When the LO module is turned on, the code executes an initialization process. This process provides a

lamp test, and displays the channel number on the front panel eight-segment LED display. An internal

reference is adjusted to operational frequency, and the synthesizer chip is programmed with the operational

frequency that was previously set into the microprocessor’s non-volatile memory. Additionally, the

working arrays and structures of the application are set into RAM. After the initialization program

completes, the code enters a simple state machine to judge and operate the LO module.

STATE MACHINE

Reference Level

The first step of the state machine is to weigh the 10 MHz source that is applied to the synthesizer. If the

reference level is acceptable, that state machine advances to the synthesizer lock state.

If the power from this source is not sufficient to assure reliable operation of the synthesizer, the LO ALC

level is minimized, and the state machine enters the failed state.

Synthesizer Lock

The synthesizer PLL chip is tested for lock. If the synthesizer is locked, the LO ALC level is adjusted to

the specified output level, and the Operating State is entered.

If the synthesizer is not locked, the failed state is selected.

Operating

During the operating state, all operational characteristics of the synthesizer are monitored. If the reference,

LO lock, or LO output power falls outside of specified operating parameters, the failed state of the state

machine is selected. Otherwise, the state machine remains in the operate mode.

Failed The state machine enters the failed condition when ever a test of the above states are not met.

Upon entering this state, the firmware reduces the LO level, and resets the programmable chips to their

initial operational points. After a short delay, the state machine is restarted from the beginning to attempt

to bring the LO module into normal operation.

REMOTE MONITORING

The Local Oscillator has provisions for remote monitoring and control. Two networks, an RS-485 and RS-

232 provide the ability to control and status query the module.

The RS-485 port is directed to a local RS-485 network located on the back plane board of the driver sub-

chassis. This network allows for the monitoring and performance of the LO module from the ComView

remote monitor and control program.

The RS-232 port, accessed on the front panel, allows for quick access to a desktop calibration program, and

is primarily used for initial calibration and factory setting of the module.

Power Supply Module Theory of Operation - 47266099

COMWAVE DIVISION

All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST.

CREATED: CTS ................................................................1/26/00 CHECKED: KAS ...............................................................1/27/00

RELEASED: PRC

............................................................. 2/11/00

Document #: DOC14-0036

REV: JAN.27.00

POWER SUPPLY MODULE THEORY OF OPERATION

The power supply module uses the latest technology and

is equipped with the following features:

• Single-chip embedded microcontroller

monitoring and control.

• RS-232 front panel connector for quick

interface to desktop computer.

• Modular, hot swap assembly.

The above features offer quick and simple monitoring

functions and provide expedient assembly and repair

time.

Figure 1: Plug-in power supply module.

The DC power supply module receives 48 VDC from an external front end power supply and converts it into the

working voltage and power requirements necessary to operate the driver. Additionally, the power supply houses the

system controller CPU card that organizes network messages between the driver modules, power amplifier

segments, and the ComView monitor and control system. See DOC13-0175 for a more detailed discussion of the

system controller card, DOC13-0185 for a discussion of the system controller cards firmware, and DOC13-0173 for

a discussion of the embedded controller.

The power supply module contains a single chip embedded controller, it constantly monitors the performance of the

power supply and external controls. The embedded controller processes this information and decides the operational

control of the module then informs the system controller of the power supply's operational status.

The power supply is cooled by a single fan, and is mounted in an extrusion designed to dissipate the heat generated

from the components within. The fans of the sub-chassis also ventilate the power supply plug-in module; for

additional protection, the embedded controller monitors the temperature of the plug-in. If the plug-in module is

operating over temperature, controlled shut down of the power supplies within will occur.

The plug-in module consists of three circuit boards, the converter board with the embedded controller, system

controller board, and display board, which needs no further explanation. A brief discussion of each board's task(s)

follows:

The core of the module is the DC converter PCB. The DC converter board mounts overtop a DC to DC

converter module, which transforms the 48VDC input voltage into +12VDC. The DC converter PCB

produces the remaining voltages needed to operate the driver from the 12 VDC.

The embedded controller mounted on the DC converter PCB, monitors the voltages and currents from the

power supply and controls the output based upon voltage and current measurements. It will switch off the

Power Supply Module Theory of Operation - 47266099

COMWAVE DIVISION

All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST.

CREATED: CTS ................................................................1/26/00 CHECKED: KAS ...............................................................1/27/00

RELEASED: PRC

............................................................. 2/11/00

Document #: DOC14-0036

REV: JAN.27.00

positive voltages to the driver when a loss of negative voltage is detected in order to protect amplifier

devices that are located within the upconverter / amplifier plug-in.

Mounted directly above the DC converter PCB is the system controller PCB. It receives its operating

power directly from the DC converter PCB. Additionally, the DC converter PCB routes the RS-485

communication networks between the system controller to the back plane connector in the rear of the

chassis and eventually to other modules within the driver, as well as the ComView monitoring system.

The power supply module can be divided into the following five major categories:

1. The power supplies provide the operating voltages needed to power the driver.

2. The power supply enables turn the power supply voltages on and off when commanded by the embedded

controller.

3. The current and voltage monitoring circuit samples the operating parameters of each power supply and

conditions them into the required voltage range within the analog to digital converters of the embedded

controller.

4. A temperature sensor provides input to the microcontroller proportional to the ambient temperature of the

module.

5. The embedded controller controls and monitors the performance of the module.

More detailed discussions of the above categories can be found in subsequent documents.

FRONT AND REAR PANEL DESCRIPTIONS

Front Panel

Refer to Figure 2 for numerical references.

1) COMM PORT: RS-232 Communications

port for communication to a PC.

2) LED's: Status monitoring LED's which

provide visual indication of operating

parameters.

a) Power

i) GREEN = receiving power from

the front end power supply

ii) UNLIT = no power from the front

end power supply

b) DC Power

i) GREEN = output power is present

ii) UNLIT = no output power

3) FAN: 18-CFM DC for plug-in module

cooling only.

4) THUMB SCREWS: Secure module to the

sub-chassis and provide a reliable ground

connection; loosen to remove module for

replacement or repair.

5) HANDLE: Assists in removing module

from sub chassis.

Figure 2: Power supply module front panel.

Power Supply Module Theory of Operation - 47266099

COMWAVE DIVISION

All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST.

CREATED: CTS ................................................................1/26/00 CHECKED: KAS ...............................................................1/27/00

RELEASED: PRC

............................................................. 2/11/00

Document #: DOC14-0036

REV: JAN.27.00

Rear Panel

Refer to Figure 2 for numerical references.

1. 48 PIN DIN: Interface to the back plane, (all

power, control and diagnostics)

2. POWER CONNECTOR: 6-pin header, for

power from the front-end power supply.

3. HEATSINK: Aids in dissipation of heat

generated within the plug-in module.

4. GROUND / ALIGNMENT STUD: Ensures

that proper ground is made prior to engaging

the 48 pin DIN; also aids in the alignment of

the module within the sub-chassis.

Figure 3: Power supply module rear panel.

Power Supply Plug-In Module Specifications – 47266099.00

COMWAVE DIVISION

All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST.

CREATED: CTS ................................................................3/19/99 CHECKED: KAS ...............................................................2/7/00

RELEASED: CTS

.............................................................. 2/8/00

Document #: 47266099.00-306

REV: P1

SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE

POWER SUPPLY PLUG-IN MODULE SPECIFICATIONS

Parameter Specification Notes/Test Conditions

INPUT

Input Voltage 48 VDC

Input Current 4 amps maximum @ low line, full rated power

Peak Inrush Current ≤ 6 amps

Efficiency 85% typical @ full load

OUTPUT

Output Voltage Main Output

12VDC ±.5

+8VDC ±.5

+24VDC ±.5

-12VDC ±.5

All voltages are fixed.

Output Current Main Output

+12V @ 4amps

+8V @ 3.0 amps

-12V @ .4amps

+24V @ .3amps

Power from the supplies is interrupted when

the power supplies are overloaded.

Output Power Main Output

+12V @ 60Watts

+ 8V @ 24 Watts

-12V @ 5Watts

+24V @ 7Watts

Power from the supplies is interrupted when

the power supplies are overloaded.

Ripple & Noise ≤200mv pp 20MHz BW

Line Regulation .4% over entire AC input range

Load Regulation .4% no load to full load

PROTECTION

Over Voltage The power supply will shut off if the

voltage exceeds the nominal voltage by

20%.

Over Current The power supply will shut off if the current

exceeds the maximum value.

Over Temperature The power supply will shut of if the

temperature exceeds 70°C. Restart is

automatic when power supply returns to

normal operating temperature.

Power Input Interlock Interlock system assures power disconnects

during module insertion or extraction.

ENVIRONMENTAL

Cooling Forced air-cooled, minimum of 15 CFM

required Forced air-cooled drawing ambient air

through the intake on the front of the power

supply and exhausting out the rear.

Operating Temperature 0°C to 50°C

Relative Humidity 0 to 95% non-condensing

Power Supply Plug-In Module Specifications – 47266099.00

COMWAVE DIVISION

All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST.

CREATED: CTS ................................................................3/19/99 CHECKED: KAS ...............................................................2/7/00

RELEASED: CTS

.............................................................. 2/8/00

Document #: 47266099.00-306

REV: P1

SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE

Parameter Specification Notes/Test Conditions

ALARMS / INDICATORS / AJUSTMENTS / CONTROLS

DC Output Failure Alarm TTL Low = DC Output Failure Signal available at back-plane

DC-OK Indicator Green LED, ON= DC OK Visible via front panel

AGENCY COMPLIANCE

Safety Meets UL and CSA approvals (pending)

PHYSICAL

Weight 4 lbs. (1.81Kg)

Front Panel Color Matches Sherwin William’s Paint No.

Light Gray ……..F63TXA2555

Medium Gray ….F63TXA4841

Paint mix number 4303 identifies store

location when added to Paint No.

Lexan overlay color matched as indicated

Mechanical Dimensions 4.75”H x 3.0”W x 17.5”D

12.07 cm H x 7.62 cm W x 44.45 cm D

COMWAVE DIVISION

Power Supply Plug In Module Block Diagram

All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST.

CREATED: CTS 1/26/00 CHECKED: KAS 1/27/00 RELEASED: PRC 2/11/00

Document #:47266099-034 REV: A 1

DC to DC

converter, 12

Volts output

DC inverter, -

12 Volts

output

Positive

Voltage

Switch

Negative

Voltage

Switch

24 Volt

Supply

8 Volt

Supply

Local Micro Controller

Output Voltage and Current Monitoring

Master Micro Controller

Driver Back Plane connector

48V DC

input

power

5 Volt

Supply

POWER SUPPLY PLUG-IN MODULE BLOCK DIAGRAM

DRAWN:

RELEASED:

CHECKED:

DWG. NUMBER:

TITLE:

REV: A

B-47266099.02-050

CTS / 8-24-99

PRC / 2-11-00

REV Description

KAS / 1-27-00 Scale:

none Sheet

1 of 2

COMWAVE DIVISION

ECO#

NAME/DATE

Global MCU

Display

Interface

Fan

J3 J1

1 2

GND

+12 V

GND

Power

DC OK

RS-232 R

RS232 ENABLE

RS-232 T

Interconnection, Power Supply Module

w/ DC Font end.

Front Panel

Overlay

GND

Power

DC OK

Purchased part

DC converter board

+12 Volts

Power Supply Module - Embedded Microcontroller

COMWAVE DIVISION

All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST.

CREATED: CTS ................................................................1/26/00 CHECKED: KAS ...............................................................1/27/00

RELEASED: CTS

.............................................................. 2/14/00

Document #: DOC13-0173

REV: JAN.27.00

POWER SUPPLY MODULE EMBEDDED CONTROLLER

Reset Circuitry

Two integrated circuits monitor the condition of the 5VDC power source; additionally they monitor the closure of the

reset jumper. When the jumper is shorted, or the 5VDC power supply falls below a preset threshold, a reset line goes

low.

The reset line is tied directly to the reset input of the controller. When this voltage transitions from TTL high, to

TTL low, and returns high, the embedded controller will reset and begin executing instructions from the designed

initial turn on procedures.

Node Address Switches

Node address switches located on the DC converter PCB apply TTL high and low signals into the embedded

controller’s input port C. The controller reads the settings of the switches to determine the node address that the

module will report to as a node device within the RS-485 network.

Alternately, the node address can be directly programmed into the firmware or EEPROM of the embedded

controller, and the node address switches can be used to set operational characteristics of the module for diagnostic

aids.

RS-485 Communications

Communications between the embedded controller and the RS-485 network are handled via a Universal

Asynchronous Receiver-Transmitter (UART). The UART communicates with the microcontroller via the Serial

Peripheral Interface (SPI) built into both devices. When a byte from the message arrives on the RS-485, the UART

stores the information in memory, and generates an interrupt to the embedded controller. The embedded controller

services the interrupt by transferring the byte from the UART to the microprocessor. The microprocessor assembles

the message, byte by byte within its own memory.

To send a message to the RS-485 network, the microprocessor sends a byte of the message to the UART through the

SPI. The UART sends the byte onto the network. This process is completed, byte by byte, until the entire message

is sent across the RS-485 network.

RS-232 Communications

The communication from and to the RS-232 port is handle via the Serial Communications Interface (SCI) of the

microcontroller, and an RS-232 line driver. The RS-232 line driver conditions the SCI signals for output onto the

RS-232 network, and in turn returns an RS-232 logic signal to the TTL logic required for the SCI to process the

message. The SCI within the microcontroller assembles the byte and generates an internal interrupt within the

microprocessor. The microprocessor then stores the byte with memory to assemble the message.

To send a message to the RS-232 network, the message is written byte by byte onto the RS-232 register, and this

sends the messages onto the network.

Front and Rear Panel indicators

The embedded controller writes status information into a latching line driver. The outputs of this latching line driver

drive the positive and negative power supply enables. Additional outputs from the line driver supply the power to

illuminate the LED’s installed within the front panel overlay, also a rear-panel fault alarm is provided to the rear

panel.

System Controller Firmware Description - 47266099

COMWAVE DIVISION

All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST.

Document #: DOC13-0185

REV: FEB.16.00

SYSTEM CONTROLLER FIRMWARE

The system controller firmware is responsible for monitoring the operational parameters of the chassis with the

network. The system controller routinely services each module within the driver, and the status of the module is

determined. A table of information is kept for the status of each device within the driver, and an overall status is

determined for the driver chassis as an entity. When the ComView remote monitoring program queries the status of

the driver, the system controller returns the status of the operational parameters to ComView

MODES OF OPERATION

Scan mode

The normal mode of operation for the system controller is the scan mode. The controller takes charge of

the local RS-485 bus, and operates network messaging.

When the firmware is in the scan mode, the system controller sends out a status request to each module

sequentially, each module then responds with its current status; the system controller stores and processes

this information. This cycle repeats until all of the modules in the network are serviced, the scanning

process is then repeated.

When ComView requests the status of the driver chassis, the controller provides the information that was

gathered and determined from each module.

Service mode

This mode of operation applies when the ComView application is suspended, and a calibration program is

launched from a desktop PC.

The calibration application works with one module at a time within the driver. When this mode of

operation is active, the system controller stops the scanning process. Messages from the calibration

program are received from the remote RS-485 network, and relayed onto the local RS-485 network; the

system controller does not modify this message. When the module processes the message routed through

the system controller, it replies to the controller through the local RS-485 network. The system controller

then relays this message to the remote RS-485 network, which, in turn relays it back to the desktop PC

running the calibration application.

In this mode of operation the system controller appears transparent to both the module and the Desktop PC.

Local RS-485

The local RS-485 bus is the network that all of the modules within a system controller connect to and

utilize for intercommunication during normal operation.

Remote RS-485

The remote RS-485 bus is the network that the driver provides to the outside world.

This network is primarily used for the remote monitoring and control provided by ComView. This port can

also be used for calibrations and system settings that mirror each module’s front panel RS-232 connector.

Power Amplifier Segment Theory of Operation - 04-294, 04-333

COMWAVE DIVISION

All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST.

CREATED: KAS...................................................................9/15/98CHECKED: DMW................................................................9/18/98 RELEASED: PRC.................................................................10/20/98

Document #: DOC14-0008

REV: DEC.08.99

ECO #: 98-116

POWER AMPLIFIER SEGMENT THEORY OF OPERATION

The power amplifier segments of the high

power single channel transmitter series or

broadband booster series use the latest

technology in power FET’s. The transistors

provide high output power, as well as more

linearity and higher efficiency.

Mechanically, the power amplifier segments

have a plug-in architecture that allows hot

replacement. In addition to hot

replacement, the architecture of the

amplifier enables flexibility to tailor the

system to higher output power levels and

can be easily upgraded.

The power amplifier segment consists of a

microwave amplifier2, control board1, DC to

DC converter

, and a front panel. A

microcontroller system, located on the

control board, supervises and controls the

power amplifier segment in each of its

functions. The DC to DC converter reduces

48 V

front-end power supply input to the

nominal amplifier voltage of 10.5 V. The

front panel displays the status of the

amplifier segment and interfaces the control

board to a computer by means of a serial

RS-232 port

. See Figure for numerical

references.

FRONT VIEW

SIDE VIEW

Figure 1: Power amplifier segment.

OPERATION

The amplifier segment is equipped with a

key lock switch on the front panel to retain

it in place. When pushing-in or pulling-out

the Segment, turn the key lock switch to the

OFF position. After plugging the amplifier

segment into the sub-rack and tightening

the front panel thumbscrews, turn the key-

lock switch to the ON position. The 10

secondary power supply will start up

the control board, which applies a negative

voltage to the gates of the FET’s and turns

the DC to DC converter on. It also adjusts

the transistor’s current and releases the

input signal to the microwave amplifier.

The airflow passes through the heatsink

from the front to the rear of the sub-rack.

The airflow loss to the other power

amplifier segments during hot replacement

is negligible.

POWER AMPLIFIER SEGMENT BLOCK DIAGRAM

Microwave Amplifier

Rear Panel

Connector

DC to DC Converter

Control Panel

Front Panel

Connector & Key

Lock Switch

Document #: DOC15-0013 REV: C, ECO #: 98-116

Created by: KAS 9/15/98

Checked by: DMW 9/18/98

Released by: PRC 10/29/98

Figure 2 : DOC15-0013 power amplifier segment block diagram.

Power Amplifier Segment Theory of Operation - 04-294, 04-333

COMWAVE DIVISION

All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST.

Document #: DOC14-0008

REV: DEC.08.99

ECO #: 98-116

POWER AMPLIFIER SEGMENT SPECIFICATIONS

Table 1: DOC19-0014, REV D.

PARAMETER SPECIFICATION

Primary Voltage 48 VDC

Primary Current 4.9 A

Secondary Voltage 10 ±0.5 VDC

Secondary Current 400 mA

Communication Port RS-232 and RS-485

Input Power

Digital

Analog 12.0 dBm

17.5 dBm (@ POut1dB)

Output Power

Digital

Analog

41.5 dBm

47.0 dBm (@ POut1dB)

DC Connector Floating Molex p/n 15-06-0141

Impedance / RF Connector 50 O / Blindmate

Operating Temperature 0° to 50° C

Dimensions 10.3” H x 2.1” W x 17.1” D

26.16 cm H x 5.33 cm W x 43.43 cm D

Approximate Weight110 lbs (4 Kg)

• SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE.

1 Weight doesn’t include shipping material.

AMPLIFIER SEGMENT STATE FLOW DIAGRAM

Amplifier Segment State Flow Diagram

Document #: DOC21-0006

REV: A

Created by: Kimberly Simeone 11/23/98 Released by: Donald Wike 11/23/98Checked by: Christian Smith 11/23/98

All information contained in this document is confidential

and proprietary to COMWAVE and shall not be disclosed

without the prior written permission of COMWAVE.

RESET

COLD

STANDBY

FAILED

TRANSMIT

RAMP

Front panel

switch on

driver placed

out of

standby

Completion of

ramp up delay

loop. Transistors

at nominal current.

Established AGC at

nominal power

Normal State Progression

Standby control active

Module failure

Arrow Key

COMWAVE DIVISION

All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST.

CREATED: KAS 11/20/98 CHECKED: CTS 11/23/98 RELEASED: DMW 11/23/98

Document #: DOC21-0005 REV: DEC.08.99 1

FIRMWARE FLOWCHART

START

Initialize module, network and

operational mode

Begin main loop

Update the operational

parameters of the module

Test the operational parameters

against programmed limits to ensure

valid operation of the module

Determine the operational

state of the module

Record invalid operational

parameters into EEPROM for

later analysis

Control gate and ALC functions of

the module based on current state.

Check for and

communicate over the

RS-485 network

Firmware Flowchart Power Amplifier Segment

Customer Service

COMWAVE DIVISION

All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST.

CREATED: KAS ............5/6/99 ECO #: 99-035, 3/25/99 CHECKED: DMW..............................................................1/18/99 RELEASED: PRC .............................................................. 1/18/99

Document #: DOC20-0001

REV: FEB.09.00

CUSTOMER SERVICE

CONTACT INFORMATION

DURING BUSINESS HOURS

Inquiries may be directed to Thomcast Communications, Comwave Division during business hours, 8 am to 5

pm Monday through Friday. When the automated attendant answers you will be given the option of dialing

your party direct or speaking with the operator.

AFTER BUSINESS HOURS

If you need emergency assistance due to equipment shutdown or malfunction, customer support personnel are

available 24 hours a day. Call Comwave at one of the numbers listed below; when the automated attendant

answers press 6, leave your name, company name, phone number, equipment model number(s), and a brief

description of the problem you’re encountering. When you hang up the system will automatically page the on-

call technician who will then return your call in a timely manner. You can listen to the message prompt for

other options as well, however, for emergency assistance you MUST use option 6.

Thomcast Communications, Comwave Division

Crestwood Industrial Park, 395 Oakhill Road

Mountaintop, PA 18707

1-800-266-9283 USA & Canada

1-570-474-6751 International1 & USA

(Please note, as of 12/98, our area code changed from 717 to 570)

1-570-474-5469 FAX

(Please note, as of 12/98, our area code changed from 717 to 570)

COMMENTS/SUGGESTIONS

Please forward comments regarding documentation content and/or layout, or suggestions to improve Comwave

publications to ksimeone@thomcastcom.com.

EQUIPMENT RETURNS

If the equipment requires return for factory service, please follow the guidelines listed. Thomcast cannot be

held responsible for damaged equipment received due to improper packing; contact Thomcast with any

questions or concerns.

1. Contact Comwave: Call Comwave to report the problem and to obtain a “Return Authorization”

number2 (RA). This enables accurate tracking and identity of returned equipment for prompt and efficient

service.

2. Obtain packaging materials: Use original boxes and packing materials when returning any equipment.

This will safeguard against most in-transit damages. If original boxes and packing materials are not available,

contact Thomcast to obtain replacement materials prior to shipping, they are provided at a nominal cost.

3. Pack equipment: Use original packing materials and directions provided. Most equipment is packed in a

box within another box; this varies with each product. Double boxing provides maximum protection.

Caution: Do not pack equipment using “PEANUTS” as filler it does NOT provide sufficient protection

during shipping. Rough handling by the carrier may cause permanent damage to the equipment.

Thomcast cannot be held responsible for damaged equipment received due to improper packing.

1 International calls must dial the country code before the phone number, i.e. 001-570-474-6751.

2 If you do not obtain an RA number prior to returning equipment Thomcast cannot be held responsible for delays in repair and return

time.

Return Packaging of the Power Amplifier Segment

COMWAVE DIVISION

All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST.

CREATED: KAS ................................................................10/21/98 CHECKED: SB.................................................................. 10/22/98

RELEASED: DMW

........................................................... 10/22/98

Document #: DOC20-0003

REV: DEC.06.99

ECO #: 98-116

RETURN PACKAGING OF THE POWER AMPLIFER SEGMENT

1. Start with an empty power amplifier

segment box, shown in Figure 1. If

you don’t have one please inform

Comwave customer service when you

contact them for a return authorization

(RA) number, which you MUST do

prior to returning ANY equipment.

2. Place the power amplifier segment into

the box, as shown in Figure 2. The

heatsink should always face up and the

connectors on the rear of the power

amp segment rest against the soft gray

foam for protection.

Figure 1: Empty power amplifier segment box.

HEATSINK

REAR

Figure 2: Boxed power amplifier segment.

3. Fold the edges of the inner box in and

close.

4. Place the inner box into the 4-pack

master (outer box), being sure to

include three empty power amplifier

boxes for a secure fit, as shown in

Figure 3. The power amplifier

segments are generally packed 4 per

master box and shipped. When

returning segment(s) please pack them

the same way, ALL boxes will be

returned to you. If you need to

assemble a master box, use 2” clear

box tape over the bottom seam, using

three layers to assure strength. Then

put 4 pieces of fiberglass strapping

tape over the edges.

Return Packaging of the Power Amplifier Segment

COMWAVE DIVISION

All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST.

CREATED: KAS ................................................................10/21/98 CHECKED: SB.................................................................. 10/22/98

RELEASED: DMW

........................................................... 10/22/98

Document #: DOC20-0003

REV: DEC.06.99

ECO #: 98-116

5. Close the 4-pack master box and seal

the top seam with 2” clear box tape,

using three layers to assure strength.

Then put 4 pieces of fiberglass

strapping tape over the edges. Clearly

mark the RA number on the outside of

the box before shipping.

Figure 3: Power amplifier segments ready to ship.

Thomson Broadcast and Multimedia 8BUSD5000C 50 Watt Digital Transmitter System User Manual 10 0046 SD5000C

Thomson Broadcast & Multimedia, Inc. 50 Watt Digital Transmitter System 10 0046 SD5000C

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