Keysight 9000 Series Service Manual page 24

Chapter 3: Testing Performance
Offset Accuracy Test
c When the Enter Measurement Info window appears, ensure that the V avg function is set up as
follows and then click OK:
Source = Channel 1
Measurement Area = Entire Display
4 Press [Clear Display] 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 V
both the 50 Ω table and 1 MΩ table) of the Performance Test Record at the end of this chapter.
Notes
• For all scope readings in this procedure, use the mean value in the Measurements display area at the
• If a question mark appears in front of any of the values at the bottom of the screen, press [Clear
Vertical scale
control for
step 5
Record the
mean reading
24
bottom of the screen.
Display] on the scope, wait for the #Avgs value to return to 256 and then record the scope reading.
The question mark indicates that the oscilloscope could not make a reliable measurement. Therefore,
any results that contain a question mark should be considered suspect and you should follow the
directions above.
column (Offset Accuracy Test tables -
zero-error