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05725-02-0499 <90-00201>
P
AGE
23
INSTALLATION
LOOPBACK
LEVEL
+16 dB
+9 dB **
-16 dB
-23 dB*
S14
POSITION 1
OFF
OFF
ON
ON
S14
POSITION 2
OFF
ON
OFF
ON
**
NOTE:
This setting equals 0 dB on those units
with an M3 label on the handle.
SWITCH
S1-1
S1-2
S2-1
S2-2
S3
S4
S7-1
S7-2
S8-1
S8-2
S9
S10
S13-1
S14-1
S14-2
POSITION
ON
OFF
ON
OFF
LOSS
all OFF
ON
OFF
ON
OFF
LOSS
all OFF
1 ON* (refer
to Table J)
OFF
ON
FRONT PANEL
LEVEL SWITCHES
XMT
0 dB (refer to Fig. 12)
RCV
0 dB (refer to Fig. 12)
T
ABLE
I - 4003C S
WITCH
O
PTIONS
T
ABLE
J - 4003C L
OOPBACK
F
REQUENCY
S
ELECTION
(S13)
FREQUENCY
2813 Hz
* 2713 Hz
2513 Hz
2413 Hz
1913 Hz
1813 Hz
1713 Hz
1613 Hz
1513 Hz
1413 Hz
1313 Hz
S13 SWITCH
POSITION SET ON*
all OFF
1
2
3
4
5
6
7
8
9
10
* NOTE:
All other S13 switch
positions must be set to the OFF
position.
T
ABLE
K - 4003C L
OOPBACK
L
EVEL
S
ELECTION
(S14)
N
OTE
:
* 2713 Hz is the factory default
setting. Change per Engineers in-
structions.
N
OTE
:
* Factory Default
for -23 dB.