IBM Series 1 User Manual page 156

Figure 4-10. Connections for current loop when the
teletypewriter adapter supplies current for the loop
c
Connections for current loop when teletypewriter adapter supplies current
Teletypewriter adapter
I/O device
ASR ASR
33
35
Curren t driver, current
A2
Transmit +
,...
-0 Receive-
=
mark
..., X6
T8
B5
Transmit -
Signal ground
......
'0 Receive +
...,
X7 T7
A3
Receive +
Nonisolated contact in +
n.
-
Transmit - X3
T6
-
...,
BI
Receive -
Nonisolated contact in -
-
"U
Transmit +
X4 T5
...,
(or) B5
ASR 33 cable connections
~
from ASR 33 wiring diagram
ASR 35 cable connections
from ASR 35 schematic
c
o
Teletypewriter Adapter 4-33