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CDM-600 Satellite Modem Revision 7
Connector Pinouts MN/CDM600.IOM
5–6
5.9 Auxiliary Serial Connector (P6)
Provides an RS-232 serial link between the modem and the CRS-150 1:1 Redundancy
Switch.
Table 5-9. Auxiliary Serial Connector (USB Type B Socket)
Pin # Description Direction
1,4 Ground
2 EIA-232 Transmit Data Out
3 EIA-232 Receive Data In
WARNING
Although this port uses a USB connector, the signals are not USB
compatible. Do NOT connect this port to the USB port of a PC, or
other computing device.
5.10 Balanced G.703 Interface Connector (P7)
The Balanced G.703 connection is a 15-pin female connector located on the rear panel of
the modem. Refer to Table 5-10 for pin assignments.
Table 5-10. Balanced G.703 Interface Connector Pin Assignments
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.