Keysight Technologies Infiniium 90000A Series, Руководство по обслуживанию

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30 90000 A-Series Service Guide
3
Testing Performance
2
Press [Default Setup] , then configure the oscilloscope as follows:
a
Click Setup > Acquisition... .
a
In the Acquisition dialog box, enable averaging and set # of Averages to 256.
3
Set the Aux Out voltage (V
Aux Out
) to +15 mV as follows:
a
Click Utilities > Calibration Output... .
b
Change the Signal Output function to DC.
c
Set the Level to 15 mV.
4
Set the vertical scale of the channel under test to 5 mV/div.
5
Drag and drop the Average voltage measurement icon onto the channel 1
waveform.
6
Press [Clear Display] on the oscilloscope, wait for the number of averages to
return to 256, and then record the DMM voltage reading as V
DMM+
and the
scope V avg reading as V
Scope+
in the DC Gain Accuracy Test section of the
Performance Test Record.
7
Change the Aux Out voltage to -15 mV.
NOTE
• For all oscilloscope readings in this procedure, use the mean value in the Results area at
the bottom of the screen.
• If a question mark appears in front of any of the values in the Results area, press [Clear
Display] on the oscilloscope, wait for the number of averages to return to 256, and then
record the oscilloscope reading. The question mark indicates that the oscilloscope could
not make a reliable measurement.
Record the
Mean reading