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70 Chapter 3
Utility Procedures
Voltmeter
Voltmeter
A voltmeter is available in the Test Set, and can measure low level dc or
ac voltages. The input to the voltmeter is controlled by the AF Anl In
field in the AF ANALYZER screen.
CAUTION Do not exceed the rated input to the Test Set for the DC Level and
AC Level measurements.
The connector best suited to making ac Level and dc Level
measurements is the AUDIO IN port.
Measuring AC Level and DC Level
1. Press Shift, then RF Anl (AF Anl) to go to the AF ANALYZER screen.
2. Select AF Anl In and choose Audio In.
3. Select Audio In Lo and choose Gnd. This sets the AUDIO IN LO
port to ground, which allows you to measure voltage at the AUDIO
IN HI port.
4. Attach a probe (for example a 1:1 oscilloscope probe) to the AUDIO
IN HI connector.
5. AC Level is displayed. To change to DC Level, select the AF Freq
measurement and choose DC Level from the displayed list of
choices.
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