2 Making Measurements
40 Keysight E-Series E9300 Operating and Service Guide
Configure the power meter as follows:
1 Press , . The current setting is displayed under the
softkey.
2 To change this press . A pop up window appears. Use or to
highlight your choice.
To confirm your choice press .
The section “Setting the Range, Resolution and Accuracy” in the Keysight EPM
series power meters Programming Guide shows you how to configure these
parameters using the remote interface.
Measurement considerations
While autoranging is a good starting point, it is not ideal for all measurements.
Signal conditions such as crest factor or duty cycle may cause the power meter to
select a range which is not the optimum configuration for your specific
measurement needs. Signals with average power levels close to the range switch
point require you to consider your needs for measurement accuracy and speed.
For example, using a Keysight E9300/1/4A sensor, where the range switch point is
–10 ± 0.5 dBm in a pulsed signal configured as follows:
The calculated average power is –12 dBm.
The example shows the key labels for a single channel power meter. Dual
channel meters are similar, adding channel identification to the softkey labels.
Characteristics Value
Peak amplitude –6 dBm
Duty cycle 25%
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