Offsetting A Power Measurement; Power Offset Example - Keysight 53147A Operating And Programming Manual

2 Operating Your Instrument

Offsetting a Power Measurement

You can use the power offset (Pwr Offset) function to add or subtract a constant
value to/from a power measurement. For example, you can use an offset to
compensate for a systematic error, to display the difference
in power between two signals, or to compensate for losses and attenuation in
cables or components that are between the signal source and the Power Meter.
To display an offset power measurement, you set the value and sign (+/–) of the
offset and turn the Power Offset function on.

Power Offset Example

1 Connect a signal to the Power Meter input connector, and activate power
2 Press the Shift key, and then press the Pwr Offset (Avg) key.
If the power-offset value was previously changed, the previous value is
NOTE
displayed instead of 00.00.
110
measurement by pressing the Display Power key.
The display should look like this (the values are simulated in these
illustrations):
Ch 2
Freq
Pwr
The Shift annunciator activates when you press the Shift key. When you press
the Pwr Offset key, the Shift annunciator and the frequency display disappear,
the Pwr Offset annunciator at the left side of the display activates, and the
power-offset value is set to 00.00, as shown below:
Ch 12
Rel Freq
Rel Pwr
Offset
Keysight 53147A/148A/149A Operating and Programming Guide
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