Agilent Technologies 46A, 45A, 54835A manual Select Acquisition from the Setup menu

Chapter 3: Testing Performance

To test bandwidth

19Repeat steps 4 through 18 for the remaining channels, setting the parameters of the channel being tested where appropriate.

Real Time Test

20Select Acquisition from the Setup menu.

21Select Real Time sampling mode, 8 GSa/s (Agilent 54845A and 54846A) or 4 GSa/s (Agilent 54835A) configuration, then click Close.

22Repeat steps 4 through 19, testing channels 1 and 3 to the 2.25 GHz limit (54846A), 1.5 GHz limit (Agilent 54845A), or the 1.0 GHz limit (Agilent 54835A).

23Select Acquisition from the Setup menu.

24Select the 4 GSa/s configuration (Agilent 54845A and 54846A) or 2 GSa/s configuration (Agilent 54835A), then click Close.

25Repeat steps 4 through 19, testing channels 1, 2, 3, and 4 to the 1 GHz limit (Agilent 54845A and 54846A) or the 500 MHz limit (Agilent 54835A).

1 MΩ, 500 MHz Test on 54835A, 54845A, and 54846A

26Disconnect the power splitter from the channel input.

27Select Acquisition from the Setup menu.

28Select Equivalent time Sampling Mode and click Close.

29Connect the Agilent 1161A 10:1 probe to channel 1. Verify that the probe compensation is correct.

30Change channel to 100 mV/div using the knob.

31Connect the probe tip to the power splitter using the probe-tip-to-BNC adapter and 50Ω termination.

32Repeat steps 5 through 19, testing the 500 MHz limit on channels 1, 2, 3, and 4.

If the test fails

Failure of the bandwidth test can be caused by a faulty attenuator or main assembly. A self calibration may correct a bandwidth failure.

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