Agilent Technologies 1000A Series, Руководство по обслуживанию

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Service 1
Agilent 1000A Series Oscilloscopes Service Guide 31
3 Set up the oscilloscope:
a Press [Auto-Scale] .
b Set the oscilloscope Channel 1 probe attenuation to 1X.
c Set the oscilloscope Channel 1 vertical sensitivity to 200 mV/div.
d
Set the oscilloscope horizontal sweep speed control to 5 ns/div.
e
Adjust the intensity to get a sharp, clear trace.
f
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).
g
Ensure the horizontal position control is set to 0.0 seconds.
4
Make the measurement.
a
Set oscilloscope horizontal sweep speed control to 1 ms/div.
b Set horizontal position control to +1 ms (rotate control
counter- clockwise).
c Set the oscilloscope horizontal sweep speed control to 10 ns/div.
d
Turn on the zoomed time base by pressing the
[Menu/Zoom]
key
followed by the
Zoom
softkey in the Horizontal menu.
e 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.
f Record the result and compare it to the limits in the “Performance
Test Record” on page 35.