User Manual

12 MG320-en-GB_v1.1 1/17

6.7.5 Comparator Utility

Read and understand all operations and safety information contained in the Insulation Resistance

and Continuity measurement sections and the Safety section before continuing.

In Comparator mode the meter compares measurement to a preset reference values and

displays PASS (measured value greater than reference value) or NG (measured value lower than

reference value).

1. Connect the meter to the device under test as shown in the test section above.

2. Press the COMP button momentarily and the COMP icon will appear on the lower left, next to

the comparison resistance value. Use the COMP button to step to the desired reference value.

3. Press the TEST button to start the test. If the measurement is greater than the reference,

then the test passes and PASS will be displayed; if the measured value is lower than the

reference then the test fails and NG is displayed.

4. The Resistance comparator preset options are: 100k, 200k, 300k, 400k, 500k, 1M, 2M, 3M,

4M, 5M, 10M, 20M, 30M, 40M, and 50M.

5. The Continuity comparator preset options are: 1, 2, 5, 10, and 20Ω.

7. DataRecording

The MG320 can store, recall, and clear up to 99 readings (01-99).

1. Press the

button to save a displayed reading.

2. The displayed counter increments to the next available memory location.

3. To recall a reading, press the

button (RECALL will be displayed). Use the arrow

buttons to scroll through the stored readings. The stored reading counter keeps track of the

memory location (01-99). Press

again to return to the normal mode.

4. Press and hold the

button for 2 seconds to erase all memory data.