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Appendix H - X.21/V.11 Data Channel Pinout
X.21/V.11 Data Channels connectors 1 - 4
(15 Way DB25 Type Configured DCE)
DATA CHANNEL CONNECTIONS:
Name
Protective Ground
G
T(A)
T(B)
R(A)
R(B)
S(A)
S(B)
I(A)
I(B)
C(A)
C(B)
X(A)
X(B)
Note:
Connector shell and termination must be as specified in EMC section, Appendix C, on page 34 of this
manual.
Description
Type at
Connector
Signal Ground
TxD a
TxD b
RxD a
RxD b
Output
Clock a
Clock b
Output
Indicate a
Indicate b
Control a
Control b
Ext Clock a
Ext Clock b
TECHNICAL: 0118 931 2233
Echo 2 Mbps Multiplexer
DCE - DB15
Female
-
1
-
8
Input
2
Input
9
Output
4
11
Output
6
13
Output
5
Output
12
Input
3
Input
10
Input
7
Input
14
41
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