Comtech EF Data SMS-301 - Manual (Page 32)

Installation SMS-301 Redundancy Switch
2–10 Rev. 3
2.3.2.5 Data I/O Connector (J1, J2, J3) 37-Pin (PL/6201-2)
Note: For EIA-422 Serial Interface applications.
The 37–pin D subminiature connector has the pin assignments shown in Table 2-8.
Table 2-8. Connector Assignments, 37-Pin
Pin # Signal Function/Name Comment
1 Signal GND Mod/Demod
2 Send Timing (ST-B) Modulator
3 Modulator Fault (MF) Modulator
4 NC NC
5 NC NC
6 NC NC
7 NC NC
8 NC NC
9 Clear To Send (CS-A) Modulator
10 NC NC
11 NC NC
12 NC NC
13 Send Data (SD-B) Modulator
14 Request To Send (RS-B) Modulator
15 NC NC
16 NC NC
17 NC NC
18 NC NC
19 Terminal Timing (TTA) Modulator
20 NC NC
21 Send Timing (TT-A) Modulator
22 NC NC
23 NC NC
24 NC NC
25 NC NC
26 NC NC
27 Clear To Send (CS-B) Modulator
28 NC NC
29 NC NC
30 NC NC
31 NC NC
32 Send Data (SD-A) Modulator
33 Request To Send (RS-A) Modulator
34 NC NC
35 NC NC
36 NC NC
37 Terminal Timing (TT-B) Modulator