Comtech EF Data CDM-600/600L - Manual (Page 66)

CDM-600/600L Open Network Satellite Modem Revision 3
Rear Panel Connector Pinouts MN/CDM600L.IOM
3–6
3.3.3 P4A Audio Connector, DB-9F
The 9-pin ‘D’ Type female (DB-9F) P4A Audio connector is used for the two
32 kbps ADPCM audio inputs and outputs (600
Ω transformer coupled,
balanced signals). These can be used for both ESC voice circuits in IDR mode,
or as the primary data (FAST option).
P4A Audio Connector (DB-9F)
Pin # Signal Function Direction
1 Tx Audio 1 + In
6 Tx Audio 1 - In
2 Rx Audio 1 + Out
7 Rx Audio 1 - Out
8 Tx Audio 2 + In
4 Tx Audio 2 - In
9 Rx Audio 2 + Out
5 Rx Audio 2 - Out
3 Common
3.3.4 G.703 Connectors
3.3.4.1 P7 Balanced G.703 Interface Connector, DB-15F
The 15-pin ‘D’ Type female (DB-15F) P7 Balanced G.703 connection is used
for balanced operation at the G.703 data rates of T1 (1.544 Mbps), E1 (2.048
Mbps), or T2 (6.312 Mbps).
P7 Balanced G.703 Interface Connector (DB-15F)
Pin # Signal Function Name Direction
1* Drop Data Input ( - ) DDI– In
9* Drop Data Input (+) DDI+ In
2 Ground GND
10 Not Used
3* Insert Data Output ( - ) IDO– Out
11* Insert Data Output (+) IDO+ Out
4 Ground GND
12 Drop Data Output ( - ) DDO– Out
5 Drop Data Output (+) DDO+ Out
13 Insert Data Input ( - ) IDI– In
6 Insert Data Input (+) IDI+ In
14 Not Used
7 Not Used
15 Not Used
8 Not Used
*Use for all non-Drop and Insert and T2/E2 balanced applications.