INSTALLATION GUIDE FOR RX-1839
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Copyright - refer to title page
Page 31
Config:
Select the required state in setting columns of RF information window for RF switch, then press [Enter] or
[Config] button to finish the configuration operation.
Isolation detection switch
: the repeater provides the function isolation detection, when switch on, the
repeater will test the real isolation between DT port and MT port, the value will be shown in
item
”Miscellaneous”, The value will be shown until the next isolation detection. The detection span of
isolation is 70dB to 110dB. The switch will switch off auto after 30 seconds.
5.7.2 CHANNEL NO.
Channel No. includes Low Edge Channel No. and High Edge Channel No. The value in [MaxValue] column
is the upper limit of the range, while the value in [MinValue] column is the lower limit of the range.
Figure 21: Channel No.
Config:
Enter the required value in setting columns and click [Config] button to finish the configuration operation.
There are two methods to insert the channel number:
Insert the desired channel number (within the setting range) into the [Setting] column directly
Right click the [Setting] column, the [Frequency Calculator] dialogue window seen as below will pop-up,
insert the desired channel number. Then the corresponding frequency will turn up automatically. This
function makes it easier for user to configure.
Figure 22: Frequency Calculator
Channel NO. setting rules:
The repeater can support 4 sub-bands(Master unit) and 2 sub-bands(Slave unit), in order to make sure the
repeater can work normally, the main software protect the setting of Channel No., the rules are shown as
below:
Before switch on the channel switch, please check the channel frequency and it shall not be
overlapping with other channels which have turned on. Otherwise the config will remain off after press
“config” in OMT.
For channel frequency setting, internal calculation will judge if the setting will be overlapping with any
other existing channel, if conflicted, then the config will not be effective.
Make sure the difference between the highest frequency and the lowest frequency is less than 60MHz.
For GSM, In the same channel, the difference between high edge channel no. and low edge channel
no. is more than X and less than X+124, its meaning is the bandwidth is 0.2~25MHz.
