Comtech EF Data SMS-458B - Manual (Page 99)

SMS-458B Modem Protection Switch Revision 2
Cable Configuration MN/SMS458B.IOM
A–3
A.2 SDM-2020 Modulator (TX only) with G.703 Data Interface
Perform the following installation procedures.
1. Install SMS-458B Modem Protection Switch in a rack. Secure the switch in
place.
2. Ensure cable assemblies are available for installation, refer to Figure A-1
Table A-2. Cable Assembly
QTY Part No. Nomenclature
1 CA/0755 Cable Assy, Control
5 CA/0813-4 Cable Assy, BNC
1 CA/0953 Ground Cable, Strap
5 CA/7706-1 Cable Assy, Interface (50-to-9-Pin)
2 WI/17250 Power Cord
3. Connect cable assemblies are specified in Table A-3.
Table A-3. Cable Connection
Cable Part No. SMS-458B SDM-2020M
CA/0755 Modem Control J3 Remote J1
CA/0813-4 Prime Mod Inputs J18 through J21 CP1 TX-IF
CA/0813-4 Backup Mod Input J26 CP1 TX-IF
CA/0953 Ground J39
CA/7706-1 Prime Modem J6 J5 AUX
CA/7705-1 Backup Modem J3 J5 AUX
WI/17250 Power Input J27 and J38
CA/0813-4 Prime TX Data G.703 DATA OUT J4
CA/0813-4 Backup TX Data G.703 DATA OUT J4