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JD780A Series Analyzers
Setting display
After completion of the auto measurement, the screen menu changes to Trace/Display so that you can
view the results in different forms.
Procedure
1.
Toggle the Display soft key and select the display option:
–
Result: to view the result table. The Display Result menu becomes activated.
–
Settings: to view the measurement settings for the auto measurement.
2.
Toggle the Display Result soft key and select the display result option:
–
Full: to view detailed measurement readings with the pass/fail indication.
–
Quick: to view only the Pass/Fail results.
3.
To view the measurement results for a different carrier, press the View Carrier soft key and then
select the carrier number to view.
Conducting GSM OTA measurements
This Over-The-Air (OTA) measurement has channel scanner, frequency scanner, multipath profile, and
modulation analyzer screens. The GSM OTA has a function to display channel power and related
information up to 128 GSM down link signals. This channel scanner can quickly identifies improper
power levels that affect network performance. The transmitter performance can be made on a base
station from the convenience of your vehicle without taking the base station out of service. It helps you
to determine testing area's RF environmental condition with the multipath profile.
Channel scanner
Setting channel
Procedure
1.
Press the FREQ/DIST hard key.
2.
To select the standard channel, complete the following steps:
a.
Press the Channel Std soft key. The standard channel window appears.
See "Appendix C – Band, frequency & channel standard" on page 571 for more information.
b.
Select the band to be measured by using the rotary knob, the arrow keys, or the Page
Up/Page Down soft keys.
c.
Press the Select soft key or the rotary knob to confirm the selection.
3.
To set the starting channel to be scanned, complete the following steps:
a.
Press the Channel Number soft key.
b.
Enter a value by using the numeric keys. You can also use the rotary knob.
c.
Press the Enter soft key.
4.
To set the amount of channel increment in scanning channels, complete the following steps:
a.
Press the Channel Step soft key.
b.
Enter a value by suing the numeric keys. You can also use the rotary knob.
c.
Press the Enter soft key.
5.
To set the number of channels to be displayed, complete the following steps:
144
Using GSM/GPRS/EDGE Signal Analyzer
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