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8-2
PIM-P Analyzer User’s Manual
Copyright AWT-Global, LLC. All rights reserved.
8.1 Introduction
DFP (Distance to Faulty PIM) is to identify a faulty position on the RF path in the RF
system. In particular, it detects the point where PIM occurs and a distance to the faulty
PIM point on RF path for the base station and relay equipment in mobile communication.
In the past, the maintenance persons spend lots of time and cost to maintain the
communication tower because they cannot know the point where the faulty PIM occurs on
the RF path. However DFP use PIMD Analyzer to identify the Distance to faulty PIM on
the RF path on the ground instead of going up to the tower.
The transmission line is the most common error point in the communication system. A
discontinuity between cable and module connection can occurs on the line over time
because the line is exposed to external environment and on the tower. Because VLM
(VSWR/Line Monitor) measures VSWR on the transmission line and identifies the faulty
VSWR point on the line, it can be diagnosed and replaced before the severe damages
occur.
These DFP and VLM features can optimized and improve the communication quality
with reducing the maintenance cost of the base station and relay equipment as well as
eliminating the compromised factors.
8.2
Specification

DFP(Distance to Faulty PIM)
Model(DFP) Distance to Faulty PIM
Sensitivity -150dBc, 3
rd
order, 2X +43dBm
Dynamic Range/ Accuracy 50dB, typical / ±50cm(Typ.), ±1.5m(Max.)

VLM(VSWR/Line Monitor)
Model(VLM) Distance to Faulty VSWR
Measurement Range 1 – 20 Watts Average Power
VSWR 1.2:1 (Min), 6:1(Max)
Return Loss 20dB(Max), 3dB(Min)
Resolution (Return Loss) 0.1 dB