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AC Volts
The AC voltmeter measures the AC volts between two points in a circuit. The voltmeter is connected
in parallel with the circuit.
1. Connect the DMM test lead to the EXP’s accessories port.
2. Select the meter’s icon.
3. Connect the clamps or probes in the correct polarity: red clamp or probe to positive (+);
black to negative (–).
4. The meter will autorange and display the measurement.
5. To return to the METERS menu, press the END soft key.
Scope
The scope is a voltmeter that provides a graph of voltage difference as it varies over time. After you
select the scope icon, note the instructions in the next screen before proceeding. You’ll need the them
after you press the SELECT soft key to continue:
• Press 1 on the keypad to autoscale the scope.
• Press 3 on the keypad for the time display.
• Press 4 on the keypad for the FFT (frequency) display.
Press the SELECT soft key to continue.
In the time display the horizontal axis is in seconds and the vertical axis is in volts.
In the frequency display the horizontal axis is in hertz and the vertical axis is in volts.
Press the right soft key to alternate between the options to RUN (measure and display the signal) and
HOLD (freeze the signal).
The scope enables you to print the voltage trace to the optional IR printer when you freeze the signal.
Align the EXP’s IR transmitter with the printer’s receiver, and select the PRINT soft key.
To return to the METERS menu, press END.
Chapter 9: DMM (Digital Multimeter)