IBM System/34 Maintenance Manual page 416

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CA
LA
Clock Cable
0
DO
U2 V2
L2
F2
Line 1
CA
Clock
n
n
u
U2
LA
Cable
0
~
V4
H2 L4
Line 3
CA Communications Adapter
LA Line Adapter
• EIA/CCITT
• 1200 BPS Integrated Modem
• DDSA
• Analog Wideband (one per system, max.)
• Autocall (two per system, max.)
Figure 30-5. Communications Unes (A-B3 Board)
Top Card
Connector
(see Figure
30-4)
Modem A
Cable
o
U4
CA LA
~
M2
G2
Line 2
CA
n
~
LA
0
J2 M4
Line 4
Modem B
Top Card
Connector
(see Figure
30-4)
Glock
o
Cable
U2D
V3
Clock
0
U2
Cable
0
V5
Cable
o
N2P2 Q2
0
R2S2 T2 (U51
Z5 ''''"' _ _ _ _ Modem Op _ _ _ _ _ _ _ _ _ _ _ / Z6
Panel Cable
Notes:
1. Either modem can be attached to any line and any
communications adapter.
2. Top card connectors used on the B3 board cannot be
used for other boards.
Figure 30-6. 4800 BPS Integrated Modem (A and B) (A-B3 Board)
30-100
Multiline Communications Adapter 7
•