Comtech EF Data SMS-301 - Manual (Page 30)

Installation SMS-301 Redundancy Switch
2–8 Rev. 3
2.3.2.3 Data I/O Connector (J1, J2, J3), 25-Pin (PL/6026)
Note: For EIA-422/-530, EIA-232, V.35, or G.703 applications,
The 25-pin D subminiature connector has the pin assignments shown in Table 2-6.
Table 2-6. Connector Assignments, 25-Pin
Pin # EIA-422/-530 EIA-232 V.35 G.703 Signal Function
3 RD-A RXD RD-A RD-A Receive Data
16 RD+B RD+B RD+B
2 SD-A TXD SD-A SD-A Send Data
14 SD+B SD+B SD+B
24 TT-A TXC SCTE--A Terminal Timing
11 TT+B SCTE+B
15 ST-A ST SCT-A Send Timing
12 ST+B SCT+B
17 RT-A RXC SCR-A Receiver Timing
9 RT-B SCR-B
4 RS-A RTS RTS Request to Send
19 RS+B
5 CS-A CTS CTS Clear to Send
13 CS+B
8 RR-A DCD RLSD Receiver Ready
10 RR+B
6 DM-A DSR DSR Data Mode
22 DM+B
20 MC-A MC MC-A MC-A Master Clock (input)
23 MC+B MC+B MC+B
18 LL LL LL
21 DF DF DF DF Demod Fault
25 MF MF MF MF Mod Fault
7 SIGGND SIGGND SIGGND SIGGND Signal Ground
1 SHLD SHLD SHLD SHLD
The following shows the jumper configurations for EIA-422/530.
EIA-422/-530 V.35 EIA-232 G.703
J6 J6 J19 J5
J7 J7 J23 J10
J8 J8 J24 J11
J9 J9 J25 J12
J14 J14 J27 J13
J15 J15 J28 J14
J17 J16 J29 J18
J18 J18 J30 J20
J20 J20 J17 J21
J21 J21 J22
J22 J22 J26
J26 J26