Technical data

56 4000 X-Series Oscilloscopes Service Guide
2 Testing Performance
e Decrease the amplitude from the signal generator until
1 vertical division of the signal (about 5 mV
pp
) is
displayed.
The trigger is stable when the displayed waveform is
stable. If the trigger is not stable, try adjusting the
trigger level. If adjusting the trigger level makes the
trigger stable, the test still passes. If adjusting the
trigger does not help, see the “Troubleshooting” chapter.
Then return here.
f Record the result as Pass or Fail in the Performance
Test Record (see page 61).
g Repeat this step for the remaining oscilloscope
channels.
6 Perform these steps to test at the 10 mV/div setting:
a Set the signal generator amplitude to about 20 mV
pp
.
b Press the [AutoScale] key.
c Set the time base to 10 ns/div.
d Set channel 1 to 10 mV/div.
e Decrease the amplitude from the signal generator until
0.6 vertical divisions of the signal (about 6 mV
pp
) is
displayed.
The trigger is stable when the displayed waveform is
stable. If the trigger is not stable, try adjusting the
trigger level. If adjusting the trigger level makes the
trigger stable, the test still passes. If adjusting the
trigger does not help, see the “Troubleshooting” chapter.
Then return here.
f Record the result as Pass or Fail in the Performance
Test Record (see page 61).
g Repeat this step for the remaining oscilloscope
channels.