AWT PIM-P, Руководство пользователя, Страница: 94 / 110

12-3
PIM-P Analyzer User’s Manual
Copyright AWT-Global, LLC. All rights reserved.
12.2 Performance Check
To maintain maximum performance, it is highly recommended to conduct a basic test
of the PIM-P on a daily basis.
The following components are required for the performance test:

Low-IM Termination Load (AWT 50W Low PIM Load)

Low PIM Cable
Install the test set-up as shown:
Testing Analyzer operation status 12.2.1

Connect the Low PIM Load to a PIM-P Analyzer with torque wrench

Set PIM-P to Analyzer Mode

Set the frequencies of carrier signals 1 and 2.

Set the power levels to 43 dBm (20W) – with ALC: ON

Switch RF Power ON

The PIM Signal(s) should be at a level below -160 dBc.
If the reading is higher (lower negative value), switch RF OFF, disconnect connections
and re-connect them. Repeat test
If the reading is still above -160dBc replace low PIM cable and retest.
Hint: Low PIM cables wear out with use. If a cable does not longer
perform in the desired way, dispose of it and replace it with a new cable.
Worn out cables can cause unnecessary work and costs. Trying to repair a
base station with a worn out cable will lead to no avail.
 Switch “RF Power OFF

Set the PIM-P to Field Mode

Since the PIM-P Analyzer is connected to a low PIM load (not to an active antenna),
the
RSSI value shows the noise floor of the instrument.

RSSI should be below -130dBm