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SDM-309B Satellite Modem
4.2.1.8 IBS Interface Specification................................................................................................................ 4-15
4.2.1.9 IBS Interface Breakout Panel ............................................................................................................ 4-17
4.2.1.9.1 IBS Terrestrial Interface (J1) ..................................................................................................... 4-19
4.2.1.9.2 RS422 Interface (J2) .................................................................................................................. 4-19
4.2.1.9.3 V.35 Interface (J3) ..................................................................................................................... 4-20
4.2.1.9.4 Engineering Service Channel..................................................................................................... 4-20
4.2.1.9.5 G.703 Interface (J5) ................................................................................................................... 4-21
4.2.1.9.6 External Reference Clock (J6) ................................................................................................... 4-21
4.2.1.9.7 Send Data (J7)............................................................................................................................ 4-21
4.2.1.9.8 Receive Data (J8) ....................................................................................................................... 4-22
4.2.1.9.9 Alarm Outputs (TB1) ................................................................................................................. 4-22
4.2.2 Drop & Insert Interface............................................................................................................................. 4-24
4.2.2.1 Functional Description ...................................................................................................................... 4-24
4.2.2.2 Data Interface .................................................................................................................................... 4-25
4.2.2.3 Transmit Multiplexer......................................................................................................................... 4-25
4.2.2.4 Receive Demultiplexer ...................................................................................................................... 4-25
4.2.2.5 Plesiochronous Buffer ....................................................................................................................... 4-26
4.2.2.6 Engineering Service Channel (ESC) ................................................................................................. 4-26
4.2.2.7 Backward Alarm................................................................................................................................ 4-26
4.2.2.8 Drop & Insert Interface Connector Pinouts ....................................................................................... 4-32
4.2.2.9 Drop & Insert Interface Specification ............................................................................................... 4-32
4.2.2.10 Drop & Insert Breakout Panel ......................................................................................................... 4-34
4.2.2.10.1 Drop Data Input, Insert Data Output, and Ext. Ref Clk (J1) .................................................... 4-36
4.2.2.10.2 Drop Data Output (J2).............................................................................................................. 4-36
4.2.2.10.3 Insert Data Input (J3) ............................................................................................................... 4-36
4.2.2.10.4 Insert Data Output (J4)............................................................................................................. 4-37
4.2.2.10.5 Drop Data Input (J5) ................................................................................................................ 4-37
4.2.2.10.6 Drop Data Output (J6).............................................................................................................. 4-37
4.2.2.10.7 Insert Data Input (J7) ............................................................................................................... 4-37
4.2.2.10.8 Insert Data Output (J8)............................................................................................................. 4-37
4.2.2.10.9 External Reference Clock (J9) ................................................................................................. 4-37
4.2.2.10.10 ESC Channel (J10)................................................................................................................. 4-38
4.2.2.10.11 Faults (J11) ............................................................................................................................ 4-38
4.2.2.10.12 Data Interface (J12)................................................................................................................ 4-38
4.2.2.11 Rear Panel Switches ........................................................................................................................ 4-39
4.2.2.11.1 Drop Data Input ....................................................................................................................... 4-39
4.2.2.11.2 Drop Data Output..................................................................................................................... 4-39
4.2.2.11.3 Insert Data Input....................................................................................................................... 4-39
4.2.2.11.4 Insert Data Output.................................................................................................................... 4-40
4.2.2.11.5 External Reference Clock ........................................................................................................ 4-40
4.2.2.11.6 Drop Output/Insert Input (SW4) .............................................................................................. 4-40
4.2.2.11.7 Drop Data Output DCE/DTE Select (SW5)............................................................................. 4-40
4.2.3 External Channel Unit Interface ................................................................................................................ 4-45
4.3 Interface Clocking Options ........................................................................................................................... 4-45
4.3.1 Master/Slave ............................................................................................................................................. 4-45
4.3.1.1 Master/Slave RS422 or V.35............................................................................................................. 4-45
4.3.1.2 Master/Slave G.703 ........................................................................................................................... 4-46
4.3.1.3 Master/Slave X.21 ............................................................................................................................. 4-46
4.3.1.4 Master/Slave External Station Clock................................................................................................. 4-46
4.3.2 Master/Master ........................................................................................................................................... 4-46
4.3.2.1 Master/Master (Customer Clock) ...................................................................................................... 4-47
4.3.2.2 Master/Master (Station Clock) .......................................................................................................... 4-47
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