Functions and Measurements
Making an Average Power Measurement
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accuracy. For best accuracy, users are recommended to
perform external zeroing for input signals below - 30 dBm for
best accuracy.
Making a Basic Average Power Measurement
To make an average power measurement, you connect the
power sensor and cable, zero and calibrate the meter, before
making a measurement. Zeroing of the power meter will
occur automatically:
• Every time you use the Power Meter.
• When a 5 degree C. change in temperature occurs.
• Whenever you change the power sensor.
• Every 24 hours.
• Before measuring low level signals—for example, 10 dB
above the lowest specified power for your power sensor.
Calibrating the power meter every time you cycle the power
on and off.
In most situations, you can press {Zero} to complete the two
steps (zero and cal) together.
NOTE
If you suspect other signals may be present, it is recommended that
you turn off all the other channels and measure average power only
on the signal of interest. Another option is to measure channel power
(which is less accurate), that filters out all other channels (signals).
NOTE
Connect the power meter as close as possible to the power
amplifier/duplexer output. Do not use a coupled port. Sensors may not
be as accurate at the power levels provided by coupled ports.
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