Operating Your Frequency Counter 2
Keysight 53150A/151A/152A Operating Guide 89
Measuring Relative Power
You can measure the difference in power from one measurement to another or
between two separate input signals using the Relative Power function.
Relative Power Example
Press the Shift key, and then press the Rel Pwr (PWR Offset On/Off) key. The
Shift annunciator activates when you press the Shift key. When you press the Rel
Pwr key, the Shift annunciator disappears, and the Rel Pwr annunciator at the left
side of the display activates. At the same time, the Counter saves the power
measurement it was displaying at the time you pressed the Rel Pwr key, and it
computes and displays the difference in power between that measurement and
the current measurement.
You can also use the Relative Power function to measure the difference in power
between two different signals. To do this, activate the Relative Power function, as
described in the previous paragraph, disconnect the cable supplying the signal to
the input connector, and then connect the second signal to the same input
connector. The value displayed when the Counter acquires the second signal is
the power difference between the two signals.
Ch 12
Rel Freq
Rel Pwr
NOTE
When the Counter is set to measure power in dBm, relative power is expressed in
dB. When the Counter is set to measure power in Watts, mW, or, μW, power
relative power is expressed as a percentage (%).
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