Specifications

FOM-40 Installation and Operation Manual Appendix A Connector Wiring
RS-530 and V.36 Interface Connectors A-3
A.2 RS-530 and V.36 Interface Connectors
The FOM-40 V.36 interface is provided via an adapter cable converting between
25-pin RS-530 connector and 37-pin V.36 connector. Table A-2 lists the cable
wiring.
Table A-2. Cable Converting between RS-530 and V.36 Interfaces, Pin Assignment
Signal Function V.36, 37-Pin RS-530, 25-pin
Pin Circuit Pin Circuit
Protective Ground 1 Shield 1
Signal Ground 19 SG 7 AB
DTE Common Return 37 SC
DCE Common Return 20 RC
Transmitted Data 4
22
SD (A)
SD (B)
2
14
BA (A)
BA (B)
Received Data 6
24
RD (A)
RD (B)
3
16
BB (A)
BB (B)
Request to Send 7
25
RS (A)
RS (B)
4
19
CA (A)
CA (B)
Clear to Send 9
27
CS (A)
CS (B)
5
13
CB (A)
CB (B)
Data Set Ready 11
29
DM (A)
DM (B)
6
22
CC (A)
CC (B)
Data Terminal Ready 12
30
TR (A)
TR (B)
20
23
CD (A)
CD (B)
Carrier Detect 13
31
RR (A)
RR (B)
8
10
CF (A)
CF (B)
External Transmit Clock 17
35
TT (A)
TT (B)
24
11
DA (A)
DA (B)
Transmit Clock 5
23
ST (A)
ST (B)
15
12
DB (A)
DB (B)
Receive Clock 8
26
RT (A)
RT (B)
17
9
DD (A)
DD (B)
Local Analog Loopback 10 LL 18 LL
Remote Loopback 14 RL 21 RL
Test Indicator 18 TM 25 TM