Comba Telecom Ltd. RX4122-B 用户手册
INSTALLATION GUIDE FOR RX-4122
ENU STATUS : 1-0-1
Copyright - refer to title page
Page 43
Figure 38: Channel parameters setting-Class A
Reminder:
Make sure the frequency of sub-bands match the actual frequency of filters, or BDA cannot work normally.
If the frequency is within [450MHz,470MHz], the bandwidth between DL Freq Low and DL Freq High can
be adjusted from 0.2 to 5MHz only. If the frequency is within[ 470,512], the bandwidth between DL Freq
Low and DL Freq High can be adjusted from 0.2-3MHz.
The frequency edges of two sub bands can be overlap, but they cannot be cross-contained.
The total channel quantity is 32CH within 4 sub-bands.
The channel center frequency must be within the frequency range of its relative sub-band, if it is not within
the range, the system will show a reminder window to show the setting unsuccessful.
If the sub band is off, all the channels belong to the sub band are auto set to off.
The procedure of sub band switch on: sub band 1 is first, and then 2, 3, 4. The procedure of sub band
switch off: sub band 4 is first, and then 3, 2, 1. And the isolation use sub band 1 to test, so make sure sub
band 1 is always on when BDA is working.
b. Click
to enter to Sub Band Setting/Channel parameters setting-Class B