Testing Performance 3
S-Series Oscilloscopes Service Guide 27
6 Change the vertical scale of channel 1 to 10 mV/div, press [Clear Display], wait
for the number of averages to return to 256, and then record the oscilloscope’s
mean V avg reading in the V
zero-error
column of the Offset Accuracy Test (50 Ω)
table. Use the Channel dialog box to select 1 MΩ impedance and repeat for 1
MΩ. Record the results in the 1 MΩ table.
7 Repeat step 6 for the remaining vertical scale settings for channel 1 in both
Offset Accuracy Test tables of the Performance Test Record.
8 Click Control > Factory Default, turn off channel 1, and turn the channel 2 display
on.
9 Configure the oscilloscope to measure V avg on channel 2 as follows:
a In the Acquisition dialog box, enable averaging and set # of Averages to 256.
b Change the vertical scale of channel 2 to 5 mV/div.
c Drag and drop the Average voltage measurement icon onto the channel 2
waveform.
10 Press [Clear Display] on the oscilloscope, wait for the number of averages to
return to 256, and then record the oscilloscope’s mean V avg reading in the
V
zero-error
column of the Offset Accuracy Test (50 Ω) table. Use the Channel
dialog box to select 1 MΩ impedance and repeat for 1 MΩ. Record the results
in the 1 MΩ table.
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