Agilent Technologies 1000A Series, Service Manual

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1 Service
34 Agilent 1000A Series Oscilloscopes Service Guide
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.
h
Record the result as Pass or Fail in the “Performance Test Record”
on page 35.
Repeat these steps for the remaining oscilloscope channels.
3
Verify the trigger sensitivity when the vertical scale is
<
5 mV/div.
For each of the bandwidth boundaries (20 MHz and 10 MHz):
a
Press the
[Default Setup]
key.
b
Set the output frequency of the signal generator to the bandwidth
boundary and set the amplitude to about 10 mVpp.
c Press the [Auto-Scale] key.
d Set the horizontal scale so that a few cycles of the waveform are
displayed.
e
Set the input channel’s probe attenuation to 1X.
f Set the input channel’s vertical scale to 2 mV/div.
g Decrease the amplitude from the signal generator to the specified
vertical division (1.5 div at 20 MHz or 1 div at 10 MHz).
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.
h Record the result as Pass or Fail in the “Performance Test Record”
on page 35.
Repeat these steps for the remaining oscilloscope channels.