Comtech EF Data SDM-650B Installation And Operation Manual page 12

Table of Contents
3.1.1.7 Utility Defaults ................................................................................................................................3-5
3.1.2 Remote Interface Specification...............................................................................................................3-6
3.1.3 M&C Theory of Operation .....................................................................................................................3-6
3.2 Digital Interfaces ..........................................................................................................................................3-7
3.2.1 RS-422 and MIL-STD-188-114 Interface ..............................................................................................3-7
3.2.1.1 Functional Description ....................................................................................................................3-7
3.2.1.2 Connector Pinouts .........................................................................................................................3-12
3.2.1.3 Specification..................................................................................................................................3-13
3.2.2 V.35 Interface .......................................................................................................................................3-14
3.2.2.1 Functional Description ..................................................................................................................3-14
3.2.2.2 Connector Pinouts .........................................................................................................................3-18
3.2.2.3 Specification..................................................................................................................................3-19
3.2.3 DS-1 Interface.......................................................................................................................................3-20
3.2.3.1 Functional Description ..................................................................................................................3-20
3.2.3.2 Connector Pinouts .........................................................................................................................3-23
3.2.3.3 Specification..................................................................................................................................3-23
3.2.4 G.703, 2048 kbit/s Interface .................................................................................................................3-24
3.2.4.1 Functional Description ..................................................................................................................3-24
3.2.4.2 Optional EXT CLK .......................................................................................................................3-26
3.2.4.3 Switch Configuration for G.703 2048 kbit/s Interface ..................................................................3-27
3.2.4.4 Connector Pinouts .........................................................................................................................3-27
3.2.4.5 G.703 2048 kbit/s Connector Board Option..................................................................................3-28
3.2.4.6 External Reference (J3) .................................................................................................................3-30
3.2.4.7 Send Data (J4) ...............................................................................................................................3-30
3.2.4.8 Receive Data (J5) ..........................................................................................................................3-30
3.2.4.9 Specification..................................................................................................................................3-31
3.2.5 Asynchronous Overhead Interface........................................................................................................3-31
3.2.5.1 Functional Description ..................................................................................................................3-31
3.2.5.2 Terrestrial Interface .......................................................................................................................3-32
3.2.5.3 Multiplexer ....................................................................................................................................3-35
3.2.5.4 Demultiplexer ................................................................................................................................3-35
3.2.5.5 Plesiochronous Buffer ...................................................................................................................3-36
3.2.5.6 Remote Interface Specification .....................................................................................................3-36
3.2.5.7 Interface Connector Pinouts ..........................................................................................................3-37
3.2.5.8 Asynchronous Interface Specifications .........................................................................................3-38
3.2.6 Asynchronous Breakout Panel..............................................................................................................3-39
3.3 Doppler Buffer............................................................................................................................................3-40
3.3.1 Buffer Setup..........................................................................................................................................3-44
3.3.1.1 Buffer Size.....................................................................................................................................3-46
3.3.1.2 Doppler..........................................................................................................................................3-46
3.3.1.3 Plesiochronous ..............................................................................................................................3-47
3.3.1.4 Frame/Multiframe Length .............................................................................................................3-47
3.3.1.5 Total Buffer Length.......................................................................................................................3-48
3.3.1.6 Converting .....................................................................................................................................3-48
3.4 Doppler Buffer Specification.....................................................................................................................3-49
3.5 I/O Connectors ...........................................................................................................................................3-49
3.6 Interface Clocking Options .......................................................................................................................3-50
3.6.1 Master/Slave .........................................................................................................................................3-50
3.6.1.1 Master/Slave RS-422 or V.35 .......................................................................................................3-51
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SDM-650B Satellite Modem
Rev. 5