TSW200E1
A.4 –X.21/V.11 Interface
To use the X.21 interface an optional cable is needed. This table describes the TSW200E1
X.21 interface DB15 connector pinout.
Pin
Circuit
(X.21)
Name
Description
Electrical
Spec
Category /
Source
1
G
GND
Shield
---------
---------
8
Ga
0V
0V
---------
---------
2
9
T
DTX-A
DTX-B
Data Transmit
Ready
V.11
Data /
Test Set
4
11
R
DRX-A
DRX-B
Data Receive Ready
V.11
Data /
Modem
3
10
C
RTS-A
RTS-B
Control
V.11
Control /
Test Set
5
12
I
CTS-A
CTS-B
Indicator
V.11
Control / Modem
6
13
S
RCK-A
RCK-B
Receive Clock
V.11
Sync /
Modem
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Содержание TSW200E1
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