IBM Series 1 User Manual page 154

o
c
o
Figure
4-9. Connections for
supplies current for the loop
current loop
Connections for current loop when user supplies current
Teletypewriter adapter
I/O device
Transmit loop
ASR
user's power supply
33
A7
Transmit +
A.
+
1 -
SSS closed
=
data mark
,..
~ Receive- X6
'-' I
B5
Transmit -
Signal ground 0 ~
Receive +
X7
Receive loop
user's power supply
Al
Receive +
+
1-
Isolated receive input +
,..
A ~ Transmit -
'-'
I
X3
A3
Receive -
Isolated receive input -
,..
~
Transmit +
X4
...,
ASR 33 cable connections
from ASR 33 wiring diagram
ASR 35 cable connections
from ASR 35 schematic
when
the
user
ASR
35
T8
T7
T6
T5
Teletypewriter Adapter 4-31