Instruction manual

Level Adjustment
Switches, SW1,
SW2, SW3, SW4
These switches are used to select the nominal input and output levels of the voice
channels:
•
SW1 selects the nominal output level of the voice channel 1 receive path.
•
SW2 selects the nominal input level of the voice channel 1 transmit path.
•
SW3 selects the nominal output level of the voice channel 2 receive path.
•
SW4 selects the nominal input level of the voice channel 2 transmit path.
NOTE
Theapplication of aninput signal at thenominal transmitlevelre-
sults in a 0 dBm0 digital level, that yields a far-end output signal
level equal to the far-end nominal receive level. Figure 2-4 ex-
plains how to determine the required levels.
The input and output levels can be set in 1-dB steps in the range of +2 dBm to
-13 dBm, according to Table 2-2. In addition, a reference tableis attached to the top
of the power transformer.
Table 2-2. Voice Channel Level Adjustment
Level (dBm) Switch Position
+2
+1
0
-1
-2
-3
-4
-5
-6
-7
-8
-9
-10
-11
-12
-13
E
F
0
1
2
3
4
5
6
7
8
9
A
B
C
D
NOTE
For the FXO interface, the maximum level is +1 dBm,there-
fore position E should not be selected.
Default: 0 dBm for both the transmit and receive levels.
Figure 2-4. Selection of
Transmit and Receive
Levels
DV-MUX3 CONFIGURATION INFORMATION
DV-MUX3 Installation and Operation Manual 2-9