Product specifications

103
5.2 Data Interface Pin Assignments
The table below displays Data Interface Pin Assignments for the Serial DCE Model
.
Function Abbrev. Direction
RS-530
DB-25(F)
V.35
M.34(F)
X.21
DB-15(F)
Frame Ground FG N/A 1 A 1
Transmit Data TD Input 2 P 2
Receive Data RD Output 3 R 4
Request to Send RTS Input 4 C 3
Clear to Send CTS Output 5 D
Data Set Ready DSR Output 6 E
Signal Ground SG N/A 7 B 8
Data Carrier Detect DCD Output 8 F 5
Secondary Receiver Clock (S)RC Output 9 X 13
Secondary Data Carrier Detect (S)DCD Output 10 12
Secondary External
Transmitter Clock
(S)ETC Input 11 W 7
Secondary Transmitter Clock (S)TC Output 12 AA
Secondary Clear to Send (S)CTS Output 13
Secondary Transmit Data (S)TD Input 14 S 9
Transmitter Clock TC Output 15 Y
Secondary Receive Data (S)RD Output 16 T 11
Receiver Clock RC Output 17 V 6
Local Loopback 18
Secondary Request to Send (S)RTS Input 19 10
Data Terminal Ready DTR Input 20 H
Remote Loopback 21
Secondary Data Set Ready (S)DSR Output 22
Secondary Data Terminal
Ready
(S)DTR Input 23
External Transmitter Clock ETC Input 24 U 14
Test Indicator 25
The front view of DB-25(F) Data interface connector on rear panel: