Technical data

Testing Performance 2
7000 Series Oscilloscopes Service Guide 47
4 Press the Quick Meas softkey, set the Source softkey to 1, then
press Select and choose Period. Press the Measure softkey and
measure the following:
Period 100 µs — The test limits are 99.8 µs to 100.2 µs.
If the measurements are not within the test limits, go to the
“Troubleshooting” chapter. Then return here.
5 Change the calibrator to 100 ns markers. Change the time
base to 20 ns/div. Adjust the trigger level to obtain a stable
display.
6 Measure the following. If the measurements are not within
the test limits, go to the “Troubleshooting” chapter. Then
return here.
Period 100 ns— The test limits are 99.8 ns to 100.2 ns.
7 Change the time base to 2 ns/div and the calibrator to 5 ns
markers.
8 Measure the following. If the measurement is not within the
test limits, go to the “Troubleshooting” chapter. Then return
here.
Period 5 ns — The test limits are 4.96 ns to 5.04 ns.
To verify trigger sensitivity
This test verifies the trigger sensitivity. In this test, you will
apply a sine wave to the oscilloscope at the upper bandwidth
limit. You will then decrease the amplitude of the signal to the
specified levels, and check to see if the oscilloscope is still
triggered.
7000 service guide.book Page 47 Thursday, October 16, 2008 12:18 PM