JDS Uniphase CellAdvisor JD780A Series, User Manual

Page: 129 / 592

JD780A Series Analyzers
Using GSM/GPRS/EDGE Signal Analyzer
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To set the trigger level Select
When using the RF burst (wideband) trigger RF Burst
To free burst if there is a frequency burst signal Internal FB
To training sequence code RF Burst & TS
To external trigger reference External
To the free trigger Free
To the locked GPS GPS
Conducting spectrum measurements
If you have configured test parameters as described in the
“Configuring test parameters” on page 125,
your measurement result is displayed on the screen as like the following example, Figure 39.
Figure 39 Spectrum measurement screen with GSM signal analyzer
Setting measure setup
Procedure
1.
Press the MEASURE SETUP hot key.
2.
Press the Time Slot soft key, and then select your desired time slot number from 0 to 7 .
3.
Optional . To set the delay, complete the following steps:
a. Press the Miscellaneous soft key.
b. Press the Delay soft key to set the amount of delay in µs.
c. Enter a value by using the numeric keys. You can also use the rotary knob.
d. Press the µs soft key.