Comtech EF Data SDM-300A - Manual (Page 80)

SDM-300A Satellite Modem Revision 6
External Connections MN/SDM300A.IOM
4–2
Table 4-1. Modem Rear Panel Connectors
Name Ref. Desig.
Connector Type
Function
TX/IF OUTPUT CP1 BNC RF Output
RX/IF INPUT CP2 BNC RF Input
EXTERNAL REF CP3 BNC Input for EXT REF clock
REMOTE J6 9-pin D Remote Interface
FAULT J7 9-pin D FORM C Fault Relay Contacts
DATA I/O J8 25-pin D
34-pin
37-pin D
50-pin D
50-pin D
100-pin D
15-pin D & BNC Data Input/Output (standard modem)
V.35
RS-422
Data Input/Output (modem with
D&I/ASYNC/AUPC/IDR/IBS option)
Without Overhead Card
MUX option only
G.703 T1, E1/ASYNC Interface Adapter
AUX 1 J9 9-pin D (TTL) Faults
Satellite Clock
Demod I/Q
Automatic Gain Control (AGC) Out
ALARMS J10 9-pin D FORM C Alarm
Relay Contacts
AC INPUT NONE IEC Modem Power
GROUND NONE 10-32 Stud Grounding
Note: The European EMC Directive (EN55022, EN50082-1) requires using properly shielded
cables for DATA I/O. These cables must be double-shielded from end-to-end, ensuring a
continuous ground shield.