Measuring Resistance; Measuring Continuity; Checking Diodes; Measuring Capacitance - Amprobe 34XR-A Mode D'emploi

4. Turn off power to the circuit being measured.
5. Open the test circuit (
6. Connect the Test Probes in series with the load.
7. Turn on power to the circuit being measured.
8. Read the display, and, if necessary, correct any overload (OL) conditions.

Measuring Resistance

1. Set the Function Switch to Ω.
2. If RANGE is displayed, press the RANGE button to enable autoranging.
3. Connect the Test Leads: Red to , Black to COM
4. Turn off power to the circuit being measured. Never measure resistance
across
a voltage source or on a powered circuit.
5. Discharge any capacitors that may influence the reading.
6. Connect the Test Probes across the resistance.
7. Read the display. If OL appears on the highest range, the resistance is too
large to be measured.

Measuring Continuity

1. Set the Function Switch to R.
2. Connect the Test Leads: Red to , Black to COM
3. Turn off power to the circuit being measured.
4. Discharge any capacitors that may influence the reading.
5. Connect the Test Probes across the resistance.
6. Listen for the tone that indicates continuity (< 35 Ω).

Checking Diodes

1. Set the Function Switch to .
2. Connect the Test Leads: Red to , Black to COM
3. Turn off power to the circuit being measured.
4. Free at least one end of the diode from the circuit.
5. Connect the Test Probes across the diode.
6. Read the display. A good diode has a forward voltage drop of about
0.6 V. An open or reverse biased diode will read OL.

Measuring Capacitance

1. Set the Function Switch to an appropriate μF function and range.
2. Connect the Test Leads: Red to COM, Black to μA mA .(-)
3. Turn off power to the circuit being measured.
4. Discharge the capacitor using a 100 kΩ resistor.
5. Free at least one end of the capacitor from the circuit.
) to establish measurement points.
See Figure -6-
See Figure -7-
See Figure -8-
See Figure -9-
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