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V.35/X.21 BI-DIRECTIONAL INTERFACE CONVERTER
X.21 DCE/V.35 DTE
Schematic Diagram
X.21 (DCE)
FEMALE
1
Shield
8
Signal
GND
3
Ca
+
10
Cb
-
5
Ia
12
Ib
2
Ta
-
9
+
Tb
CO
Elastic
DO
Buffer
4
Ra
11
Rb
6
Sa
13
Sb
Wallmount power supply should provide 9VDC @ 300mA.
Fig. 3-2. Pins Supported.
IC941A
V.35 (DTE)
MALE/FEMALE
A Protective
B
C
F
P
S
V
-
X
+
CI
R
-
DI
T
+
Y
-
AA
+
GND
Signal
GND
RTS
DCD
TDa
TDb
RCa
RCb
RDa
RDb
TCa
TCb
9
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