Comtech EF Data CIC-20 LVDS to HSSI - Manual (Page 18)

CIC-20 LVDS to HSSI Interface Converter Revision 0
Connector Pinouts MN/CIC20.IOM
6
3.2 O VERHEAD I NTERFACE C ONNECTOR (P1)
The overhead interface connector is a 25-pin D male interface located on the rear panel of
the modem. Refer to Table 2 for pin assignments.
Table 2. 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. Ref. Clock + EXT-CLK-B In
23 Balanced Ext. Ref. Clock - EXT-CLK-A In
13 IBS ESC RS232 Tx Data TX-232-DATA In
22 IBS ESC RS232 Tx Clock TX-232-CLK Out
8 IBS ESC RS232 Rx Data RX-232-DATA Out
10 IBS 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 -