Testing Performance 2
1000 X-Series Oscilloscopes Service Guide 35
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 39).
g Repeat this step for the remaining oscilloscope channels.
6 Set the output frequency of the signal generator to the maximum bandwidth of
the oscilloscope:
• 100 MHz models: 100 MHz
• 70 MHz models: 70 MHz
• 50 MHz models: 50 MHz
7 Perform these steps to test at the maximum bandwidth 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 as described in the
following table according to your oscilloscope’s maximum bandwidth:
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 39).
g Repeat this step for the remaining oscilloscope channels.
Oscilloscope’s maximum
band wid th:
Decrease amplitude until these
vertical d ivisions are displayed:
Which is about this V:
50 MHz, 70 MHz 0.9 vertical divisions 9 mVpp
100 MHz 1.2 vertical divisions 12 mVpp
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