Operating Your Instrument
2
Keysight 53147A/148A/149A Operating and Programming Guide
109
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 (
POWER METER:
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 Power
Meter 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 the
stored measurement and all subsequent measurements until the relative power
function is deactivated.
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 signal to the power head
(sensor), and then connect the second signal to the same power head. The value
displayed when the Power Meter acquires the second signal is the power
difference between the two signals.
Ch
1
2
Rel
Freq
Rel Pwr
NOTE
When the Power Meter is set to measure power in dBm, relative power is
expressed in dB. When the Power Meter is set to measure power in Watts,
relative power is expressed as a percentage (%).
Содержание 53147A
Страница 1: ...Keysight 53147A 148A 149A Microwave Frequency Counter Power Meter DVM Operating and Programming Guide ...
Страница 20: ...20 Keysight 53147A 148A 149A Operating and Programming Guide THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK ...
Страница 310: ...312 Keysight 53147A 148A 149A Operating and Programming Guide THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK ...