3-16
Testing Performance
To verify horizontal Dt and 1/Dt accuracy
4
Change the calibrator to 100 ns markers. Change the time base to
20 ns/div. Adjust the trigger level to obtain a stable display.
5 Measure the following:
Frequency 10 MHz — The test limits are 9.98 MHz to 10.02 MHz.
Period 100 ns — The test limits are 99.77 ns to 100.2 ns.
If the measurements are not within the test limits, see the “Troubleshooting”
chapter. Then return here.
54642A/42D only
6
Change the calibrator to 2 ns markers. Change the time base to
1 ns/div. Adjust the trigger level to obtain a stable display.
7 Measure the following:
Frequency 500 MHz — The test limits are 492.6 MHz to 507.6 MHz.
Period 2 ns — The test limits are 1.970 ns to 2.030 ns.
If the measurements are not within the test limits, see the “Troubleshooting”
chapter. Then return here.
54641A and 54641D
only
8
Change the calibrator to 2.857 ns markers. Change the time base to 1
ns/div. Adjust the trigger level to obtain a stable display.
9 Measure the following:
Frequency 350 MHz — The test limits are 346.4 MHz to 353.7 MHz.
Period 2.857 ns — The test limits are 2.827 ns to 2.887 ns.
If the measurements are not within the test limits, see the “Troubleshooting”
chapter. Then return here.
service.book Page 16 Wednesday, August 28, 2002 3:25 PM
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