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Procedure
1.
Press the MEASURE SETUP hot key.
2.
Press the Detect Mode soft key, and then select the signal standard option: Auto, GSM, or
EDGE. Auto is set by default. The instrument applies a mask automatically based on the selected
mode.
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.
NOTE
The Delay setting is used only when there is a time offset in the signals to be measured.
Setting limit for frame average power
Procedure
1.
Press the LIMIT hot key.
2.
Press the PvsT Test Limits soft key.
3.
Press the Frame Avg Power soft key to set the limit in the Power vs. Time (Frame)
measurement.
4.
Toggle the Test Limits soft key between On and Off to enable or disable the Pass/Fail
indication.
5.
Set the upper threshold:
a.
Press the High Limit soft key.
b.
Enter a value for the upper limit.
c.
Press the dBm unit soft key.
6.
Set the lower threshold:
a.
Press the Low Limit soft key.
b.
Enter a value for the lower limit.
c.
Press the dBm unit soft key.
7.
Optional. You can enable alarm sound that goes off if the measurement falls outside of the limit.
Toggle the Beep soft key between On and Off to enable or disable the beep sound.
8.
Optional. Go to SAVE/LOAD > Save, and then select Limit to save the limit settings.
See "Using save" on page 31 for more information.
Using GSM/GPRS/EDGE Signal Analyzer
JD780A Series Analyzers
139
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