Agilent Technologies DSO80204B, Service Manual

Page: 44 / 161

Chapter 4: Testing Performance
Offset Accuracy Test
43
c When the Enter Measurement Info window is displayed, ensure that the V avg function
is set up as follows and then click OK:
Source = Channel 1
Measurement Area = Entire Display
4
Press the Clear Display key on the scope and wait for the #Avgs value (top left corner
of screen) to return to 256. Record the scope's mean V avg reading in the Zero Error
Test section of the Performance Test Record.
5
Change the vertical sensitivity of channel 1 to 10 mV/div, press the Clear Display key,
wait for the #Avgs value (top left corner of screen) to return to 256 and then record the
scope V avg reading in the Zero Error Test section of the Performance Test Record.
Notes
• For all scope readings in this procedure, use the mean value in the Measurements display area at the
bottom of the screen.
• If a question mark is displayed in front of any of the values at the bottom of the screen, press the Clear
Display key on the scope, wait for the #Avgs value to return to 256 and then record the scope reading.
Record the
mean reading