34 5000 Series Oscilloscopes Service Guide
2 Testing Performance
3 Set up the oscilloscope:
a Press AutoScale.
b Set the oscilloscope Channel 1 vertical sensitivity to
200 mv/div.
c Set the oscilloscope horizontal sweep speed control to
5ns/div.
d Adjust the intensity to get a sharp, clear trace.
e Adjust the oscilloscope’s trigger level so that the rising
edge of the waveform at the center of the screen is located
where the center horizontal and vertical grid lines cross
(center screen).
f Ensure the horizontal position control is set to
0.0 seconds.
4 Make the measurement.
a Set oscilloscope horizontal sweep speed control to
1ms/div.
b Set horizontal position control to +1 ms (rotate control
CCW).
c Set the oscilloscope horizontal sweep speed control to
5ns/div.
d Record the number of nanoseconds from where the rising
edge crosses the center horizontal grid line to the center
vertical grid line. The number of nanoseconds is
equivalent to the time scale error in ppm.
e Record the result and compare it to the limits in the
Performance Test Record (see page 48).
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