CHP8BUSDA2500C25 Watt Frequency Agile Digital Transmitter System

1 SDA2500C 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................................................................3/7/00CHECKED: DMW.............................................................3/7/00RELEASED: DMW...........................................................3/7/00 Document #: DOC10-0048 REV: MAR.07.00 Figure 1: SDA2500C transmitting system. USER’S GUIDE 47266213.00-108 SDA2500C Agile 25 Watt Transmitter COMWAVE DIVISION This is an unpublished work protected by United States copyright laws and is proprietary to Thomcast Communications, Inc. Disclosure, copying, reproduction, merger, translation, modification, enhancement or use by anyone other than authorized employees or licensees of Thomcast Communications, Inc. without the prior written consent of Thomcast Communications, Inc. is prohibited. Copyright (c) 2000 Thomcast Communications, Inc. All rights reserved This copyright notice should not be construed as evidence of publication. 1 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. 1 SDA2500C 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................................................................3/8/00CHECKED: DMW.............................................................3/8/00RELEASED: PRC..............................................................3/8/00 Document #: DOC11-0048 REV: MAR.08.00 TABLE OF CONTENTS TITLEDOCUMENT # Cover Sheet............................................................................................................DOC10-0048 Warranty Information.............................................................................................DOC12-0001 SECTION 1 Provides information describing the system and how it works Top Level Description............................................................................................DOC13-0178 Specifications.........................................................................................................47266213.00-306 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 Thomcast 1 customer service when repairs are necessary; please do not attempt to repair any modules and/or boards by yourself. Sub-Chassis Theory of Operation.…

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1 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................................................................3/8/00CHECKED: DMW.............................................................3/9/00RELEASED: name............................................................date Document #: DOC10-0007 REV: FEB.23.00 Agile Synthesizer Drawer Technical Manual COMWAVE DIVISION Figure 1: Agile sythesizer drawer. COMWAVE DIVISION PRELIMINARY USER’S GUIDE DOC33-0037 Agile Synthesizer Drawer This is an unpublished work protected by United States copyright laws and is proprietary to Thomcast Communications, Inc. Disclosure, copying, reproduction, merger, translation, modification, enhancement or use by anyone other than authorized employees or licensees of Thomcast Communications, Inc. without the prior written consent of Thomcast Communications, Inc. is prohibited. Copyright (c) 2000 Thomcast Communications, Inc. All rights reserved This copyright notice should not be construed as evidence of publication. 1 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. 1 Agile Synthesizer Drawer 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................................................................3/8/00CHECKED: DMW.............................................................3/8/00RELEASED:...................................................................... Document #: DOC33-0037 REV: MAR.08.00 TABLE OF CONTENTS TITLEDOCUMENT # Cover Sheet...........................................................................................................................DOC10-0007 Warranty Information...........................................................................................................DOC12-0001 SECTION 1 Provides information describing the system and how it works Top Level Description..........................................................................................................DOC13-0189 Block Diagram......................................................................................................................DOC15-0068 Specifications........................................................................................................................DOC19-0139 SECTION 2 Provides information to assist in setting up and turning on your system Installation Procedure...........................................................................................................DOC17-0030 External Interconnections.....................................................................................................DOC30-0044 Turn-On Procedure...............................................................................................................DOC26-0053 SECTION 3 Provides information to help with troubleshooting Troubleshooting Equipment Fusing and Protection ..........................................................................DOC18-0076 Maintenance Inspections and Cleaning........................................................................................DOC18-0002 Calibrations...........................................................................................................................DOC16-0058 SECTION 4 Provides information about individual segments of the system. We recommend you contact Thomcast 1 customer service when repairs are necessary. Theory of Operation..............................................................................................................DOC14-0040 Front and Rear Panel Descriptions Power Supply Board.............................................................................................................DOC13-0192 IF Linear Processor...............................................................................................................DOC13-0106 UHF Upconverter Module...........................................................................................…

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All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST. PO Box 69, 395 Oakhill Road, Mountaintop, PA 18707 570-474-6751; FAX 570-474-5469 COMW AV E DIV ISIO N March 7, 2000 CERTIFICATION OF DATA FCC Section 2.909 (d) Having personally conducted the tests contained in this report, I certify that the statements and data submitted are true and correct to the best of my knowledge. Paulo Correa Director of Engineering Thomcast Communications, Comwave Division

1 COMW AV E DIV ISIO N All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST. PO Box 69, 395 Oakhill Road, Mountain Top, PA 18707 570-474-6751 or 1-800-266-9283 FAX 570-474-5469 March 7, 2000 Federal Communicatio ns Co mmission Equipment Approval Services P.O. Box 358315 Pittsburgh, PA 15251-5315 CONFIDENTIALITY REQUEST RE: FCC I.D. CHP8BUSDA2500C Gentle me n: As indicated in Section 3 of FCC Form 731, we desire to file a request for confidentiality relevant to the following sche ma tic pages: Table 1: Driver confide ntial sche matics. Drawing NumberDescription 47266015Broad Band RF Precorrector 47266017Broad Band RF Precorrector 47266058Microcontroller Board 33-435-01IF Linear Processor Table 2: Power Amplifier Segment confidential sche matics. Drawing NumberDescription 32-002-01DC-DC converter PCB for the PS module 34-010-01Microcontroller PCB for the PS module The schematic pages are attached to this report for submission to the FCC for review with our Application for Equipment Authorization as per FCC CRF Section 0.459. This request is being made due to the competitive nature of the ITFS/MMDS industry and the new level of technology used in the microcontroller interface, RF precorrector, IF linear processor, & power amplifier segment of our model SDA2500C. Our technical manual provides our customer with a substantial amount of information. Therefore, we feel it would be in the best interest of Thomcast that the aforementioned schematics, which are not included in the technical manual, be kept confidential. Your consideration of this request would be greatly appreciated. If yo u have a ny q uestio ns regarding this request, please do not hesita te to co ntac t me. Respectfully, Paulo Correa Director of Engineering Thomcast Communications, Comwave Division PC/kas

All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST. PO Box 69, 395 Oakhill Road, Mountaintop, PA 18707 570-474-6751; FAX 570-474-5469 COMW AV E DIV ISIO N March 7, 2000 Federal Communications Commission Equipment Approval Services P.O. Box 358315 Pittsburgh, PA 15251-5315 Gentlemen: The enclosed form and engineering report are submitted for certification of Thomcast's model SDA2500C, 25-watt frequency agile digital transmitter system for television transmission under parts 2, 21, and 74 of the FCC rules. Enclosed are an engineering report with required test results and a technical manual with circuit diagrams/theory of operation. If further information is required, please contact me at (570) 474-6751. Sincerely, Paulo Correa Director of Engineering Thomcast Communications, Comwave Division PC/kas

1 COMW AV E DIV ISIO N All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST. EXTERNAL PHOTOS Figure 1: SDA2500C transmitting system (SD2500C with Agile Synthesizer Drawer). .............................................. 1 Figure 2: Sub-chassis rear panel..................................................................................................................................... 2 Figure 3: Agile synthesizer drawer rear panel................................................................................................................ 2 Figure 4: Power supply plug-in module front panel....................................................................................................... 3 Figure 5: Power supply plug-in module rear panel. ....................................................................................................... 3 Figure 6: LO plug-in module front panel. ...................................................................................................................... 3 Figure 7: LO plug-in module rear panel......................................................................................................................... 3 Figure 8: Upconverter module front panel. .................................................................................................................... 4 Figure 9: Upconverter module rear panel....................................................................................................................... 4 Figure 10: Power amplifier segment front panel. ........................................................................................................... 4 Figure 11: Power amplifier segment rear panel.............................................................................................................. 4 Figure 1: SDA2500C transmitting system (SD2500C with Agile Synthesizer Drawer). 2 COMW AV E DIV ISIO N All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST. Figure 2: Sub-chassis rear panel. Figure 3: Agile synthesizer drawer rear panel. 3 COMW AV E DIV ISIO N All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST. Figure 4: Power supply plug-in module front panel.Figure 5: Power supply plug-in module rear panel. Fig ure 6: LO pl ug-i n mo dule front pa ne l. Fig ure 7: LO pl ug-i n mo dule re ar pa ne l. 4 COMW AV E DIV ISIO N All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST. Figure 8: Upconverter module front panel. Figure 9: Upconverter module rear panel. Figure 10: Power amplifier segment front panel. Figure 11: Power amplifier segment rear panel.

All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST. PO Box 69, 395 Oakhill Road, Mountaintop, PA 18707 570-474-6751; FAX 570-474-5469 COMW AV E DIV ISIO N March 8, 2000 IDENTIFICATION LABEL FCC Section 2.925, 2.926 FCC ID: CHP8BUSDA2500C MODEL SDA2500C 2-25 WAT TS AVG PO WER TRANSMITTE R FCC ID: CH P8BUSDA2500C M O DE L SD A2500 C 2 - 25 WAT TS AVG P OWE R TR A NSM I T TER NO TE : W hen us ing a Q AM mod ul ati on scheme w it h 3 carriers th e average p ow er w il l be 2 -2 0 Watt s. Figure 1: Location of FCC ID label. FCC ID: CHP8BUSDA2500C MODEL SDA2500C 2-25 WATTS AVG PWR TRANSMITTER

1 COMW AV E DIV ISIO N All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST. OPERATIONAL DESCRIPTION DESCRIPTION OF EQUIPMENT FCC Section 2.1033 1) Type of Emission: (c)(4)64/256 QAM; 6M00D7W 2) Frequency Range: (c)(5)2000-2700 MHz in select bands 3) Operating Range: (c)(6)2 – 25 w atts; 2 - 20 w atts 4) Power Rating: (c)(7)25 watts average QAM mod ulation; 20 watts average QAM modulation with three equally spaced 2 MHz carriers 5) Variation of output power (c)(6)See calibration section, document # DOC16-0057 of technical manual 6) E & I on Final: (c)(8) Drain voltage 10V Drain current 7A each 7) Tune-up Procedures: (c)(9)See calibration section, document # DOC16-0057 of technical manual 8) Function of Active Devices: (c)(10) A list of active devices in the RF chains of the SDA2500C transmitter can be found in the tune-up section. The relative position of each device may be found by referring to the block diagrams and schematics found in the technical manual. ❖ Frequency Stability Devices:See technical manual, docume nt # DOC13-0020 ❖ Spurious Suppression Circuits[k5]:Not applicable ❖ Describe Limiters: Modulation: Not applicable Power: See technical manual, document # DOC13-0177

1 Tune-Up Information COMW AV E DIV ISIO N All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST. PARTS LIST/TUNE UP INFO Table 1: List of active devices. UPCONVERTER PLUG-IN - 47266116.01 W Precorrector Module 47266073IF Linear Processor Module 47266082.01 Board 47266015Board 33-435-01 U1, U7Monolithic AmpD1 - D4, D7, D8 Pin Diodes U2, U3, U4Monolithic AmpU1IF Amplifier U6Monolithic AmpD5, D6Schottky Diodes D1 - D7Pin DiodeQ3 - Q6Transistors D8, D9Varactor Diode Board 33-442-01 W Converter Module 47266075 U2Filter Board 47266013 U3Mo nolithic A mp U1Mi xe r U2Mo nolithic A mp Intermediate Power Amplifier Module 47266077 U4, U5Mo nolithic A mp Board 47266019 U8, U9Log AmpQ1, Q2GaAs FET U11, U12Power Amp MMIC DETECTOR MODULE- 47266119 Board 47266141 U2, U4Log Amp Detectors POWER AMPLIFIER SEGMENTS - 04-333-02 Board 40-240-02 U1SPDT Switch D1 - D3Diodes Q1 – Q5GaAs FET 2 Tune-Up Information COMW AV E DIV ISIO N All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST. AGILE SYNTHESIZER DRAWER – 20-379-02 Synthesizer Module 09-075-02 Board 35-078-02Board 33-360-02 U1Dual Modulus PrescalerU1Voltage Controller Oscillator U2SynthesizerU2RF Amplifier U3ComparatorU3Operation Amplifier U4RegulatorU4Microwave Prescaler U5, U7DividersU65 V Voltage Regulator U6Operational AmplifierU7Shunt Regulator UHF Upconverter Module 09-062-02 Board 34-007-02 U1Co mpa r a tor U2Divider U3Synthesizer U4Dual Comparator U5Prescaler U6Operational Amplifier U8Vol ta ge Co ntr ol l e r Os c i ll a tor U125 V Vol ta ge Re gul a tor D1 - D3Diodes U9Power Splitter/Combi ner Board 33-323-02 U1Mi xe r U3, U4Transistor

1 Schematic List for the SD(A)xxxxC Series of Transmitters COMW AV E DIV ISIO N 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 ...................................................................2/14/00CHECKED: DMW................................................................2/14/00RELEASED: PRC.................................................................2/14/00 Document #: DOC11-0047REV: FEB.14.00 SCHEMATICS FOR THE SD(A)xxxC SERIES OF TRANSMITTERS SD2500C /SDA2500C / SD5000C / SDA5000C SINGLE CHANNEL (AGILE) TRANSMITTER MODULE/BOARDNAMESCHEMATIC 47266165Power supply backplane board47266165 SUB-CHASSIS - 47266170 MODULE/BOARDNAMESCHEMATIC 47266145Amp, backplane board47266145 47266066Interface board47266066 47266064Backplane board47266064 47266119Basic upconverter module Log Amp Detector w/Refl Pwr Fault Front panel PCB47266141 33-304-02RS-485 communications board33-304-01 UPCONVERTER / AMPLIFIER PLUG-IN – 47266116.00; 47266117.00 (AGILE) MODULE/BOARDNAMESCHEMATIC 47266071; 47266072 (AGILE)Basic upconverter module Distribution board Front panel PCB Interface PCB 47266084 47266086 47266149 47266075.00Microwave converter low level LO module Upconverter single / multi channel low LO lvl bd Upconverter distribution board 47266013 47266011 47266077IPA module Interim pwr amp 1.8 – 3.6 GHz bd assy Distribution board for interim pwr amp 47266019 47266021 47266081 IF Linear Processor Control Panel PCB33-472-02 2 Schematic List for the SD(A)xxxxC Series of Transmitters COMW AV E DIV ISIO N 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 ...................................................................2/14/00CHECKED: DMW................................................................2/14/00RELEASED: PRC.................................................................2/14/00 Document #: DOC11-0047REV: FEB.14.00 LO PLUG-IN – 47266183.00 (AGILE VERSIONS USE THE AGILE SYNTHESIZER DRAWER, SEE DOC11-0049 FOR SCHEMATICS IN THE EXTERNAL DRAWER) MODULE/BOARDNAMESCHEMATIC 47266049 LO base module Distribution board47266027 47266023.00Display board47266023 09-073-2g60-02 35-077-02 33-360-02 Synthesizer module Syn w/50KHz step PCB (digital) Syn w /50KH z step P CB (analo g/ VC O) 35-063-01 33-291-01 POWER SUPPLY PLUG-IN – 47266099.01 MODULE/BOARDNAMESCHEMATIC 47266098 Power supply base module Display board DC converter board 47266070 47266096 POWER AMPLIFIER SEGMENT – 04-333-02 33-352-02RS-232 communications board33-352-01

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1 Schematic List for the Agile Synthesizer Drawer COMW AV E DIV ISIO N 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 ...................................................................3/8/00CHECKED: DMW................................................................3/8/00RELEASED: PRC.................................................................3/8/00 Document #: DOC11-0049REV: MAR.07.00 SCHEMATICS FOR THE AGILE SYNTHESIZER DRAWER SDA2500C / SDA5000C AGILE TRANSMITTER AGILE SYNTHESIZER DRAWER – 20-379-02 (AGILE TRANSMITTERS ONLY) MODULE/BOARDNAMESCHEMATIC 09-075-2g60-02 35-078-02 33-360-02 Synthesizer module Syn w/50KHz step PCB (digital) Syn w /50KH z step P CB (analo g/ VC O) 35-063-01 33-291-01 04-305-02 40-228-02 ALC module for the agile synthesizer ALC LO PCB40-228-01 35-071-02Power supply PCB35-071-01 34-015-02Precorrector calibration control PCB34-015-01 09-062-02 34-007-02 UHF upco nverter mod ule UHF s ynthesizer/ upconver ter PCB34-007-01

1 COMW AV E DIV ISIO N All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST. PO Box 69, 395 Oakhill Road, Mountaintop, PA 18707; 570-474-6751; FAX 570-474-5469 FCC CERTIFICATION REPORT FOR THE SDA2500C, 25 WATT FREQUENCY AGILE DIGITAL TRANSMITTER SYSTEM THOMCAST COMMUNICATIONS, COMWAVE DIVISION P.O. Box 69 Oakhill Road Mountaintop, PA 18707 570-474-6751 2 COMW AV E DIV ISIO N All information contained in this document is confidential and proprietary to THOMCAST and shall not be disclosed without the prior written permission of THOMCAST. PO Box 69, 395 Oakhill Road, Mountaintop, PA 18707; 570-474-6751; FAX 570-474-5469 TABLE OF CONTENTS 1.0INTRODUCTION ...........................................................................................................................................................3 2.0TEST EQUIPMENT .......................................................................................................................................................3 3.0MEASUREMENTS .........................................................................................................................................................3 !RF POWER OUTPUT ...................................................................................................................................................3 !MODULATI ON CHARACTERISTICS..........................................................................................................................3 ❖GROUP DELAY ............................................................................................................................................................8 !OCCUPIED BANDWIDTH & FREQUENCY RESPONSE ..........................................................................................9 ❖OCCUPIED BANDWIDTH...........................................................................................................................................9 ❖SPURIOUS EMISSIONS AT ANTENNA TERMINALS ...............................................................................................11 ❖FIELD STRENGTH OF SPURIOUS RADIATION .....................................................................................................12 ❖FREQUENCY STABILITY...........................................................................................................................................13 4.0 SUMMARY..........................................................................................................................................................................16 TABLE OF FIGURES Figure 1: 64-QAM Constellation Diagram....................................................................................................................................4 Figure 2: Digital modulation occupancy. ......................................................................................................................................6 TABLE OF PLOTS PLOT 1: Demodulation performance of the 64 QAM transmitter. ...............................................................................................7 PLOT 2: Demodulation performance of the 256 QAM transmitter. .............................................................................................7 PLOT 3: Frequency response and group delay of the 64 QAM transmitter. ................................................................................8 PLOT 4: Frequency response and group delay of the 256 QAM transmitter. ..............................................................................9 PLOT 5: Occupied bandwidth of the 64 QAM transmitter. ........................................................................................................10 PLOT 6: Occupied b…

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