Premier Mounts CDM-600 specifications BNC Connectors, Overhead Interface Connector P3A

CDM-600 Satellite Modem	Revision 7
Connector Pinouts	MN/CDM600.IOM

5.2BNC Connectors

The BNC connectors are located on the rear panel of the modem. Refer to Table 5-2 for pin assignments.

Table 5-2. BNC Connectors

BNC Connector	Reference	Description	Direction
RX-IF	J1	RX-IF signals	In
TX-IF	J2	TX-IF signals	Out
EXT REF	J9	External Baseband Input	In
IDI	J10A	Insert Data Input	In
DDO	J11A	Drop Data Output	Out
RX (IDO)	J10B	RX G.703 (Unbalanced)	Out
TX (IDI)	J11B	TX G.703 (Unbalanced)	In

5.3Overhead Interface Connector (P3A)

The overhead interface connector is a 25-pin male D interface located on the rear panel of the modem. Refer to Table 5-3for pin assignments.

Table 5-3. Overhead Interface Connector Pin Assignments

Pin #	Signal Function	Signal Name	Direction
14	IDR 64 kbps ESC Tx Data +	TX-422DAT-B	In
2	IDR 64 kbps ESC Tx Data -	TX-422DAT-A	In
12	IDR 64 kHz ESC Tx Clock +	TX-422CLK-B	Out
15	IDR 64 kHz ESC Tx Clock -	TX-422CLK-A	Out
11	IDR 1 kHz Tx Octet Clock +	TX-OCT-B	Out
24	IDR 1 kHz Tx Octet Clock -	TX-OCT-A	Out
16	IDR 64 kbps ESC Rx Data +	RX-422DAT-B	Out
3	IDR 64 kbps ESC Rx Data -	RX-422DAT-A	Out
9	IDR 64 kHz ESC Rx Clock +	RX-422CLK-B	Out
17	IDR 64 kHz ESC Rx Clock -	RX-422CLK-A	Out
19	IDR 1 kHz Rx Octet Clock +	RX-OCT-B	Out
4	IDR 1 kHz Rx Octet Clock -	RX-OCT-A	Out
20	Balanced Ext.Baseband Clock +	EXT-CLK-B	In
23	Balanced Ext.Baseband Clock -	EXT-CLK-A	In
13	IBS/D&I ESC RS232 Tx Data	TX-232-DATA	In
22	IBS/D&I ESC RS232 Tx Clock	TX-232-CLK	Out
8	IBS/D&I ESC RS232 Rx Data	RX-232-DATA	Out
10	IBS/D&I ESC RS232 Rx Clock	RX-232-CLK	Out
5	IBS Tx High-Rate ESC Data	TX-ASYNC	In
6	IBS Rx High-Rate ESC Data	RX-ASYNC	Out
1	IDR Back Alarm 1 H/W input	BW-IN1	In
18	IDR Back Alarm 2 H/W input	BW-IN2	In
21	IDR Back Alarm 3 H/W input	BW-IN3	In
25	IDR Back Alarm 4 H/W input	BW-IN4	In
7	Signal Ground	Ground	-

5–2