Pim Detection - Viavi SPA06MA-O R005 User Manual

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Chapter 3 Using Interference Analyzer
Utility
2
Tap Spectrum Replayer. The File Manager window appears.
3
Select a file to be loaded and then tap Load. The replay bar appears on the
bottom of the screen, as shown in
Figure 27 Replay bar
4
Tap Play to start playing.
5
Tap FWD or REV to change play direction to forward or reverse.
6
Tap the left or right arrow of Speed to select the speed option: X1, X2, X3, or X4.
7
Tap Pause to pause or stop playing data.
8
To move to a particular failure position directly and play from there, tap Index Fail
and enter a value by using the on-screen keyboard.
9
Optional: Tap Setup > Time Cursor On/Off to display or dismiss the time cursor
on the screen. This key becomes activated when you play logged data in the
Spectrogram mode.

PIM detection

Passive Intermodulation (PIM) Detection allows you to detect Uplink PIM across the full
spectrum for any technology. When PIM is detected, the normal repair practice is to
replace the offending cable, irrespective of the location of the fault.
To make a single carrier measurement
1
Connect the cables as instructed on the screen.
2
Optional: Check for PIM existence in red by calculation.
a
b
c
d
e
3
Tap Uplink Center Frequency and input a value using the on-screen keyboard.
4
Tap Uplink Span and input a value using the on-screen keyboard.
5
Tap Channel Standard, select Technology and Band, and then the Apply
button.
Page 56
NOTE
If you connect a USB drive, do not remove it while playing to prevent freezing
the USB port, which will require you to restart the instrument to get a USB drive
recognized again.
Tap Calculated PIM.
Check the Radio 1 Band and its information in the table.
Tap Channel Standard and select Technology and Band.
Tap the Apply button.
Tap the X button to return to the previous screen.
SPA06MA-O User's Guide
Figure
27.
22145360, R005
April 2021

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