Figure 4-28

Set to

Audio In.

Overview of theTest Set’s Built-In Tools

Using the Voltmeter and Audio Frequency Counter

Using the Voltmeter and Audio Frequency Counter

The voltmeter can be used to measure ac and dc voltages. The input to the voltmeter is determined by the AF Anl In field on the AF ANALYZER screen.

To measure external voltages:

1.Select the AF ANALYZER screen.

2.Set the AF Anl In field to Audio In.

3.Set the Audio In Lo field to match the source you are measuring (600 ohm impedance, floating output amplifier, ground referenced voltage). See “Audio In Lo” on page 190 for more information.

4.Connect the signal to be measured to the AUDIO IN connector(s). The AUDIO IN HI connector can be used alone as long as the Audio In Lo field is set to Gnd. The AUDIO IN LO connector must also be used if the Audio In Lo field is set to 600 to Hi or Float.

The ac level is displayed. See Figure 4-28.

5.Select the lower-right measurement display field. See Figure 4-28.

Select DC Level to display the dc level.

Select AF Freq to display the audio frequency.

Measuring AC and DC Voltages

AC Level

Set to

DC Level or

AF Freq.

Set to match source.

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Chapter 4

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Agilent Technologies 8935 series e6380a manual Using the Voltmeter and Audio Frequency Counter, Set to Audio