Agilent Technologies 54624A, 54621D, 54622D, 54622A, 54621A manual Set up the oscilloscope

Testing Performance

To verify bandwidth

1Connect the oscilloscope calibrator output through a 50Ω feedthrough to the oscilloscope channel 1 input.

2Set up the oscilloscope.

a Set the time base to 500 ns/div.

b Set the Volts/Div for channel 1 to 200 mV/div.

c Press the Acquire key, then press the Averaging softkey. d Turn the Entry knob to set # Avgs to 8 averages.

3Set the calibrator to “Level Sine” and OPR/STBY to “OPR”.

4 Set the calibrator for 1 MHz and six divisions of amplitude. 5 Press Autoscale on the oscilloscope.

6 Press the Quick Meas key, then press the Peak-Peaksoftkey.

Wait a few seconds for the measurement to settle (averaging is then complete). View the Pk-Pk reading at the bottom of the display.

Record the reading: Vp-p= _______ V.

7Change the frequency of the signal generator to the value shown below for your instrument.

Table 3-7	Signal Generator Frequency Setting
	Selected Channel	54621A/21D	54622A/22D	54624A
	Channel 1	60 MHz	100 MHz	100 MHz
	Channel 2	60 MHz	100 MHz	100 MHz
	Channel 3	—	—	100 MHz
	Channel 4	—	—	100 MHz

8Change the time base to 5 ns/div.

a Wait a few seconds for the measurement to settle. b View the Pk-Pk reading at the bottom of the display. c Record the reading: Vp-p= ______ mV.

9Calculate the response using this formula:

⋅Step8Result 20log 10 -------------------------------

Step6Result

If the result is not ±3 dB, see the “Troubleshooting” chapter. Then return here.

10Repeat this procedure (steps 1 to 9) for channel 2, 3, and 4, as applicable to your oscilloscope model.

Proceed to the next step after you have completed the procedure for channels 2, 3, and 4, as applicable.

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