Keysight B2980B User’s Guide, Edition 1 99
How to Perform Measurement
Voltage Measurement
The guarded voltage measurement is effective when the guarded voltmeter
indicator turns on. In this setup, the same potential voltage appears at the center
conductor (Input) and the inner shield through a buffer amplifier (1) as shown in
Figure 3-9. It is effective for performing voltage measurement accurately.
See “Guarding” on page 100 for more information.
Measure Volts
Press the RANGE function key to change the ranging mode, auto or fixed. Where,
The softkey label shows the present measurement range setting, AUTO or fixed
range value.
Measurement range can be set by using the following navigation keys.
Range + Sets the fixed range mode and changes the range up.
[home] Sets the AUTO range and the Normal auto aperture.
Range Sets the fixed range mode and changes the range down.
See “Measurement Range” on page 89 for more information.
Aperture Time
Press the SPEED function key to change the aperture mode, auto or manual.
Where, the softkey label shows the present aperture time setting.
Aperture time can be set by using the following navigation keys.
Coarse Res Increases measurement speed (decreases aperture time).
[home] Sets the Normal auto aperture and the AUTO range.
Fine Res Decreases measurement speed (increases aperture time).
See “Aperture Time” on page 90 for more information.
Filter
Measurement filter function can be enabled/disabled by using the Filter key.
If the FILT indicator is turned off, pressing the Filter key opens the Measure Filter
dialog box. Pressing OK after setting up the dialog box enables the filter function
and turns the FILT indicator on.
If the FILT indicator is turned on, pressing the Filter key disables the function and
turns the FILT indicator off.
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