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Setting measure setup
Procedure
Configure test parameters as described in the "Configuring test parameters" on page 59.
1.
2.
Press the MEASURE SETUP hot key.
3.
Toggle the Active Window soft key between Top and Bottom to select the measurement
window to configure or work on.
Measurement example
Figure 21
Dual spectrum measurement with spectrum analyzer
PIM detection (single and multiple carriers)
The Passive Intermodulation (PIM) Detection allows you to detect Uplink PIM across the full spectrum
for any technology. When PIM is detected, the normal repair mode is to replace the offending cable
and what you need to do is replacing the whole cable irrespective of the location of the fault.
Setting measure setup
Procedure
1.
Press the MEASURE SETUP hot key.
2.
Connect cables as instructed on the screen.
3.
Optional. To check any possibility of PIM existence in red color by calculation, complete the
following steps:
a.
Press the Calculated PIM soft key.
b.
Press the Radio Band soft key for single carrier.
There are Radio 1 Band and Radio 2 Band soft keys for multiple carriers.
c.
Highlight a desired band and then press the Select soft key.
d.
Press the Return soft key.
4.
To set the uplink frequency to be measured, do one of the following:
Using Spectrum Analyzer
JD780A Series Analyzers
89
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