Power Meter Operation
Zeroing the Power Meter
Zeroing the Power Meter
This section describes how to zero the power meter.
Zeroing adjusts the power meter for a zero power reading with no power applied to the power sensor. During zeroing, which takes approximately 10 seconds, the wait symbol is displayed.
To zero the power meter:
1.Press ZerCalo .
2.To zero channel A or channel B use Zero A or Zero B respectively. Alternatively, to zero both channel A and channel B sequentially, use Zero Both . During zeroing the wait symbol is displayed.
When to Zero?
Zeroing of the power meter is recommended:
•when a 50C change in temperature occurs.
•when you change the power sensor.
•every 24 hours.
•prior to measuring low level signals. For example, 10 dB above the lowest specified power for your power sensor.
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