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Page Title:
Figure 1-13. 1/0 Board (A9) Jumpers (Backside) |
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  TM 11-7025-234-23
CODE X
No. 34747
ASSY.
1/0 Board (A9) Jumpers (Backside)
1/0 Board (A9) Jumpers
Normal
Description
Jumper
Configuration
Allows RLB Audio Loopback Command to be sent by EIA signal on
OUT
A
J1-18.
Allows RLB dc Loopback Command to be sent by EIA signal on J1-11.
OUT
B
NOTE
Multiplex functions are options for this modem.
c
Allows channel 1 multiplexer port remote loopback by control of
IN
EIA signal on J1-11 when multiplexer is present and has control
signaling option.
IN
Same as jumper C, except for channel 2 of multiplexer.
D
IN
Same as jumper C, except for channel 3 of multiplexer.
E
IN
Same as jumper C, except for channel 4 of multiplexer.
F
w, x
With jumpers in, puts (+) unregulated voltage on J1-9 and (-)
OUT
unregulated voltage on J1-10.
z
OUT
Same as W, X except on J2.
Y,
AA, BB
OUT
Same as W, X except on J3.
1-23
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