Eia-530-a-to-x.21 adapter, D-13 – HP 3162 User Manual
Page 153
Pin Assignments
D-13
3162-A2-GB20-40
August 2000
EIA-530-A-to-X.21 Adapter
The EIA-530-A-to-X.21 adapter (Figure D-9) provides the X.21 interface shown in
2
14
3
16
17
9
4
19
8
10
7
24
11
2
9
4
11
6
13
3
10
5
12
8
7
14
TD-A
TD-B
RD-A
RD-B
RXC-A
RXC-B
RTS-A
RTS-B
RLSD-A
RLSD-B
SIG. COMMON
TT-A
TT-B
TD-A
TD-B
RD-A
RD-B
RXC-A
RXC-B
RTS-A
RTS-B
RLSD-A
RLSD-B
SIG. COMMON
TT-A
TT-B
530
SIGNAL
DB25
PLUG
DB15
SOCKET
X.21
SIGNAL
495-14787
Figure D-9.
EIA-530-A-to-X.21 Adapter
Table D-7.
X.21 Cable Interface
Signal
CCITT
Number
Direction
Pin
Signal Common
102
—
8
Transmitted Data
103
To DSU/CSU
2 (A)
9 (B)
Received Data
104
From DSU/CSU
4 (A)
11 (B)
Request-to-Send
105
To DSU/CSU
3 (A)
10 (B)
Data Channel Received Line Signal Detector
109
From DSU/CSU
5 (A)
12 (B)
Transmit Signal Element Timing (DTE Source)
113
To DSU/CSU
7 (A)
14 (B)
Receiver Signal Element Timing (DCE Source)
115
From DSU/CSU
6 (A)
13 (B)