Technical data

44 7000 Series Oscilloscopes Service Guide
2 Testing Performance
To verify time scale accuracy
This test verifies the accuracy of the time scale. In this test you
will measure the absolute error of the timebase oscillator and
compare the results to the specification.
1 Set up the signal generator.
a Set the output to 10 MHz, approximately 1 V
pp
sine wave.
2 Connect the output of the signal generator to oscilloscope
channel 1 using the BNC cable.
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.
Table 9 Equipment Required to Verify Time Scale Accuracy
Equipment Critical Specifications
Recommended
Model/Part
Signal Generator 100 kHz - 1 GHz, 0.01 Hz
frequency resolution,
jitter: < 2ps
Agilent N5181A,
E4400B, or 8648A
Cable BNC, 3 feet Agilent 10503A
7000 service guide.book Page 44 Thursday, October 16, 2008 12:18 PM