External Modem Connections; Table 2-1. Modem Rear Panel Connectors - Comtech EF Data SDM-300A Installation And Operation Manual

Installation
2.3

External Modem Connections

When a breakout panel, such as the UB-300, is not required, the rear panel connectors
provide all necessary external connections between the modem and other equipment.
Table 2-1 lists these connectors, and Figure 2-2 through Figure 2-6 show their locations.
Notes:
1. Refer to the Comtech EFData UB-300 Universal Breakout Panel Installation
2. Refer to the Comtech EFData UB-54 Breakout Panel Installation and Operation
Name
TX/IF OUTPUT
RX/IF INPUT
EXTERNAL REF
REMOTE
FAULT
DATA I/O
AUX 1
ALARMS
AC INPUT
GROUND
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.
2–4
and Operation Manual for connecting the UB-300 breakout panel.
Manual for connecting the UB-54 breakout panel in a MUX option
configuration.

Table 2-1. Modem Rear Panel Connectors

Ref. Connector Type
Desig.
CP1 BNC
CP2 BNC
CP3 BNC
J6 9-pin D
J7 9-pin D
J8 25-pin D
34-pin
37-pin D
50-pin D
50-pin D
100-pin D
J9 9-pin D
J10 9-pin D
NONE IEC
NONE 10-32 Stud
SDM-300A Satellite Modem
Function
RF Output
RF Input
Input
Remote Interface
FORM C Fault Relay Contacts
Data Input/Output (standard modem)
V.35
EIA-422
Data Input/Output (modem with
ASYNC/AUPC/IDR/IBS option)
Without Overhead Card
MUX option only (Refer to Appendix A)
(TTL) Faults
Satellite Clock
Demod I/Q
Automatic Gain Control (AGC) Out
FORM C Alarm
Relay Contacts
Rev. 4