50
7000 Series Oscilloscopes Service Guide
2
Testing Performance
2
Verify the trigger sensitivity at maximum bandwidth.
1 GHz models: 1 GHz
500 MHz models: 500 MHz
350 MHz models: 350 MHz
100 MHz models: 100 MHz
a
Press the
Save/Recall
key, then press the
Default Setup
softkey.
b
Set channel 1
Imped
to
50 Ohm
.
c
Set the output frequency of the signal generator to the
maximum bandwidth of the oscilloscope and set the
amplitude to about 10 mV
pp
.
d
Press the
AutoScale
key.
e
Set the time base to 10 ns/div.
f
Set channel 1 to 5 mV/div.
g
Decrease the amplitude from the signal generator until
1 vertical division of the signal 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.
h
Record the result as Pass or Fail in the Performance
Test Record (see
page 57
).
3
Repeat this procedure for the remaining oscilloscope
channels.
