Comtech EF Data RCS11 - Manual (Page 83)

RCS11 1:1 Redundancy Switch Connector Pinouts
MN-RCS11 – Revision 9 5–25
5.11.2 DATA A & B (J7 & J11)
The RS449/422 Data ports are 37-Pin Female ‘D’ ports. These ports are the interface connection
between the modem and the RCS11 Switch. Refer to Table 5-28 for pinouts.
Table 5-28. J7 (Modem A) /J11 (Modem B) RS449/RS422 Data Interface
Modem A and Modem B Connector Pin Assignment
Pin # Signal Name Direction
1 Shield
3 External FIFO Buffer Output
Clock (A) - Output
4 Transmit Data (A) - Output
5 Transmit Clock (A) - Input
6 Receive Data (A) - Input
7 RTS (A) - Output
8 Receive Clock (A) - Input
9 CTS (A) - Input
11 Data Mode (A) - Input
12 DTR (A) - Output
13 Receive Ready (A) - Input
14 Mod Fault Alarm OC TTL Input
17 Terminal Timing (A) - Output
19 Signal GND GND
20 Common GND
21 External FIFO Buffer Output
Clock (B) + Output
22 Transmit Data (B) + Output
23 Transmit Clock (B) + Input
24 Receive Data (B) + Input
25 RTS (B) + Output
26 Receive Clock (B) + Input
27 CTS (B) + Input
29 Data Mode (B) + Input
30 DTR (B) + Output
31 Receive Ready (B) + Input
33 Demod Fault Alarm OC TTL Input
35 Terminal Timing (B) + Output