Specifications

Chapter 5 12-Channel FXO & Dial Pulse Termination
6-4
Switch Position
4 5 6
Switch Setting
ON
0 0 0
OFF
-2 -3 -4
The loss introduced by each switch is additive. Therefore, it is possible to select the total loss in dB between 0
and 9dB for both the transmit and receive directions by properly setting the switches on each channel.
INDIVIDUAL CHANNEL ATTENUATION EXAMPLES:
RCV GAIN = -9dB
XMT GAIN = -9dB
ON
1 2 3 4 5 6
RCV GAIN = -6dB
XMT GAIN = -3dB
RCV GAIN = 0dB
XMT GAIN = 0dB
1
0
1 2 3 4 5 6
1 2 3 4 5 6
1
0
ON
1
0
ON
Figure 6-6 Channel Attenuation Examples