Agilent Technologies 54624A, 54621D, 54622D, 54622A, 54621A manual Test External Trigger Sensitivity

Testing Performance

To verify trigger sensitivity

Test External Trigger Sensitivity

Verify the external trigger sensitivity at these settings: 100 MHz (54622A/22D/24A), <150 mVp-p

60 MHz (54621A/21D), <150 mVp-p

25MHz (All models), <75 mVp-p

1 Use the power splitter to connect the calibrator to both the channel 1 input and the external trigger input. The Ext Trigger input is on the rear

panel of the mixed-signal oscilloscope and the 4-channel oscilloscope. Connect 50Ω feedthroughs to the oscilloscope inputs.

2Change the output of the calibrator to 100 MHz for the 54622A/22D/24A

or 60 MHz for the 54621A/21D, and set the amplitude to 106 mVrms (300 mVp-p).

The power splitter divides the 300 mVp-pso that 150 mVp-pis applied to each of the oscilloscope inputs.

3Press the Autoscale key.

4Press the Trigger Edge key, then press the Ext softkey to set the trigger source to external trigger.

5Check for stable triggering, and adjust the trigger level if necessary.

6 Record the results as Pass or Fail in the Performance Test Record.

If the test fails, see the “Troubleshooting” chapter. Then return here.

7Change the output of the calibrator to 25 MHz and set the amplitude to

25.74 mVrms (75 mVp-p).

8Check for stable triggering, and adjust the trigger level if necessary.

9 Record the results as Pass or Fail in the Performance Test Record.

If the test fails, see the “Troubleshooting” chapter. Then return here.

3-19