Clarke 4500005 CDM10A Digital Instructions
![Clarke 4500005 CDM10A Digital Multimeter manual cover](/images/GHXVmNTmrfKurUPbFykAXpRe/thumbs/thumb175x175.webp)
To measure AC voltage, set the multimeter dial to the V~ symbol. Connect the black probe to the COM terminal and the red probe to the VΩ terminal. Place the probes across the component or circuit you are testing. Read the displayed value on the screen.
Check if the battery is properly installed and has sufficient charge. Replace it if necessary. Ensure the battery cover is securely closed. If the issue persists, inspect the fuse and replace it if blown.
Turn the dial to the diode test mode, indicated by a diode symbol. Connect the red probe to the anode and the black probe to the cathode of the diode. A forward-biased diode will show a voltage drop, while a reverse-biased diode should display OL.
Switch the dial to the appropriate DC current range. Connect the black probe to the COM terminal and the red probe to the mA or A terminal, depending on the current rating. Place the probes in series with the circuit.
Ensure the multimeter is set to the continuity test mode, represented by a sound wave or diode symbol. Check the probes' connections and verify they are touching the correct points in the circuit. If all else fails, test the multimeter on a known continuous circuit to confirm functionality.
Turn off the multimeter and remove the test leads. Open the battery compartment by unscrewing the cover. Locate the fuse and gently remove it. Insert a new fuse of the same rating, reattach the cover, and ensure it is secure.
Ensure your hands and the multimeter are dry. Use the appropriate settings and terminals for high voltage. Keep your fingers behind the probe guards and avoid contact with metal surfaces during measurement.
Set the dial to the resistance measurement mode, indicated by the Ω symbol. Connect the black probe to the COM terminal and the red probe to the VΩ terminal. Place the probes across the resistor and read the value displayed.
An 'OL' reading indicates the measurement is out of the selected range. Switch to a higher range if possible, or check if the probes are correctly connected to the circuit.
Calibration is recommended annually or whenever the multimeter is exposed to extreme conditions or gives inconsistent readings. Consult the user manual or a professional service for calibration instructions.