Agilent Technologies 54835A, 45A, 46A manual Clear measurements

Chapter 3: Testing Performance

To test time measurement accuracy

7Clear measurements.

8Select Period from the Time submenu of the Measure menu.

9 Period should be the following.

For Agilent 54835A: 39.50 ns ± 53 ps, minimum 39.447 ns, maximum 39.553 ns. Record the minimum and maximum readings in the Performance Test Record.

For Agilent 54845A: 39.50 ns ± 28 ps, minimum 39.47 ns, maximum 39.53 ns. Record the minimum and maximum readings in the Performance Test Record.

10Select Delta Time from the Time submenu of the Measure menu.

11Delta time should read the following:

For Agilent 54835A: 395 ns ± 78 ps, minimum 394.922 ns, maximum 395.078 ns. Record the minimum and maximum readings in the Performance Test Record.

For Agilent 54845A: 395 ns ± 53 ps, minimum 394.947 ns, maximum 395.053 ns. Record the minimum and maximum readings in the Performance Test Record.

12Press the Stop key on the front panel.

13Press the Sweep key (in the Trigger section of the front panel) to highlight the LED labeled “Single.”

14Press the Clear Display key.

15Set the timebase to 1 ∝s/div.

16Press the Run key once.

17Select Measurement Definitions from the Customize submenu of the Measure menu. (If you have code Revision A.03.00 or higher, select Delta Time from the Measurements Definitions submenu of the Measure menu.)

18Set the To Edge # to 101 with Direction Rising and Threshold Middle. Click Close.

19Delta time mean should read the following:

For Agilent 54835A: 3.949999 ∝s ± 326 ps, minimum 3.949673 ∝s, maximum 3.950326 ∝s. Record the reading in the Performance Test Record.

For Agilent 54845A: 3.94999 ∝s ± 301 ps, minimum 3.949688 ∝s, maximum 3.950291 ∝s. Record the reading in the Performance Test Record.

20Select Measurement Definitions from the Customize submenu of the Measure menu. (If you have code Revision A.03.00 or higher, select Delta Time from the Measurements Definitions submenu of the Measure menu.)

21Set the To Edge # to 201. Click Close.

22The Delta Time mean should read the following:

For Agilent 54835A: 7.89999 ∝s ± 603 ps, minimum 7.899395 ∝s and maximum 7.90060 ∝s. Record the reading in the Performance Test Record.

For Agilent 54845A: 7.89999 ∝s ± 578 ps, minimum 7.89942 ∝s and maximum 7.90058 ∝s. Record the reading in the Performance Test Record.

23Click Close.

If the test fails

Before troubleshooting the oscilloscope, be sure to verify your test setup and the waveform shape, then repeat the procedure. Try the measurement on different channels. If you still encounter problems, there may be a problem with the acquisition board. You may need to adjust the pulse overshoot response. See chapter 4 for adjustment information on the pulse response. See chapter 5 for troubleshooting information.

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