Anritsu S820E - Chapter 9 - High Accuracy Power Meter

S820E UG PN: 10580-00343 Rev. H 9-1
Chapter 9 — High Accuracy Power
Meter
9-1 Introduction
This chapter provides an overview of power meter measurements and how to
setup the instrument to use an external USB Sensor in the High Accuracy
Power Meter mode. Actual power is measured at the USB sensor connector in
dBm and Watts or relative power in dB and percentage. The frequency span
and dynamic range for measurements is determined by the USB external
sensor.
In this mode and with an appropriate sensor, the instrument can be used to
make high accuracy power measurements including true RMS measurements
for both CW and complex digitally modulated signals.
A general overview of USB sensors, including connection and measurements
setup, begins in Section 9-3 “General Measurement Setup Connection”
on page 9-4.
With the MA24105A in-line sensor, additional functions are available
including: forward and reverse measurements.
• Forward Measurements: Average Power, Crest Factor, Burst Average
Power, Peak Envelope Power (PEP), and CCDF.
• Reverse Measurements: Average Power, Reflection Coefficient, Return
Loss, and VSWR.
Note
Check the graph title in the top right of the display to confirm that
the instrument is in High Accuracy Power Meter mode.
If necessary, press the Menu key to change modes.
Note
Screen images in this User Guide are illustrations of typical
instrument features. Some images may include instruments other
than the Site Master S820E. Traces and other display features
may differ from the screen displays of your instrument.