User's Manual

ITCR Wayside User’s Manual
© 2013 Meteorcomm LLC. All Rights Reserved. Proprietary and Confidential
12 5/16/2013
l1_test,stop
l1_test,set,txmod,dqpsk_half
l1_test,start,tx
2. View the calibration settings by typing:
cal
3. Observe the value for ddslevel.
4. Tune the VSA to the center of the channel frequency and select the CCDF
function to measure the peak (envelope) power, average power and peak to average
ratio. Note that the peak envelope power is used for determining ERP.
5. The power can be modified by typing:
l1_test,stop
cal,set,ddslevel,xxx
l1_test,start,tx
While monitoring the output power, the value xxx should be increased a small
amount to increase output power or vice versa.
5.5 Check and Adjust RF Output Channel
You can adjust the RF output channel by stopping transmission, setting transmission
frequency, and then starting transmission again.
To adjust RF output channel:
1. Tune the radio to the bottom channel (217.6125MHz) by typing:
l1_test,stop
l1_test,set,txfreq,217612500
l1_test,start,tx
2. Tune the radio to the mid-channel (219.8125MHz) by typing:
l1_test,stop,
l1_test,set,txfreq,219812500
l1_test,start,tx
3. Tune the radio to the high channel (221.9875MHz) by typing:
l1_test,stop
l1_test,set,txfreq,221987500
l1_test,start,tx