S331L UG PN: 10580-00321 Rev. M 5-5
Internal Power Meter 5-3 General Measurement Setup
Changing the Display Units
The power meter scale can be displayed in dBm or Watts. Use the
following procedure to change the displayed units:
1. Press the Amplitude main menu key.
2. Press the Units submenu key and select the display units.
Displaying Relative Power
Use the following procedure to select Relative Power through the
Amplitude menu.
1. With the desired base power (reference) level connected to the
input of your instrument, press the Amplitude main menu key.
2. Press the Relative submenu key. Note that the absolute value of
the measurement at the time the Relative key is pressed is shown
in yellow below the numerical display (Figure 5-3 on page 5-6).
3. Any change in power will now be displayed relative to the set
reference level. Refer to the bottom image in Figure 5-3
on page 5-6.
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