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Chapter 1 introduction – Bird Technologies VPM3 User Manual

Page 9

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Chapter 1

Introduction

Power measurements verify and monitor the condition of a transmitter system.
To measure transmitter power, connect an external power sensor to the PC then
start the Virtual Power Meter program. Power sensors that are compatible with
the VPM are the Bird 5012B, 5014, 5015, 5015-EF, 5016B, 5017B, 5018B, 5019B,
7020, and STAT power sensors.

Note:

ONLY sensors that have USB connections can be used with

VPM3 software.

The Power Meter mode has the following features:

Three display formats: numerical readout, analog dial, and chart
recording.

Display forward power, reflected power, match efficiency, peak power,
burst, and crest factor depending upon the capabilities of the sensor.

Display power measurements in Watts or dBm.

Display match units in either VSWR, Return Loss, Rho, or % Match effi-
ciency.

Adjust power and match readings for effects of attenuators, couplers,
and cable loss

Log data to a file and review

Save and recall sensor configuration setups