Dawson DCM201A, User Manual

Page: 13 / 17

13
Attention
：

When measuring low voltage sources, the reading will fluctuate
on the display when the test leads are not connected to the
circuit. This is normal due to the high sensitivity of the Meter.
The Meter will display correct reading once the leads are
connected to the circuit.

In relative mode, auto measuring cannot be used.

“ ”indicates the maximum input voltage is 750V AC or 1000V
DC. In “ mV ” range, the maximum input voltage is 600mV DC or
AC.

The Meter will beep if the reading is greater than 750V RMS AC.
Frequency and Duty
Clamp Jaws Measurement (Current Mode) :
WARNING
REMOVE THE TEST LEADS FROM THE METER WHEN
PERFORMING A CURRENT MEASUREMENT WITH THE CLAMP
JAWS TO AVOID ELECTRICAL SHOCK AND INJURY.
1. Turn the rotary switch to “ A” (current) mode.
2. Open the jaws by holding the trigger, place the wire in the jaws.
3. Press “ Hz/% ” button to measure frequency.
4. Read the measurement from the display.
5. Press “ Hz/% ” again to measure duty.
Attention
：

Measuring two or more wires together will cause false readings.

The accuracy of the reading is guaranteed between 10Hz ~ 1kHz.
Below or above this range is still measurable, but the reading is
not guaranteed.

Duty range is10 ~ 95%.

“ ”indicates the maximum input current is 1000A AC (RMS).
Measuring in Voltage Mode:
WARNING
DO NOT MEASURE INPUTS OF MORE THAN 750V AC TO
AVOID ELECTRICAL SHOCK AND INJURY.
1. Insert the black lead into “ COM” input and the red lead into
“ INPUT ” input.
2. Turn the rotary switch to or
，
press “ FUNC ” button to
enter AC Voltage mode.
3. Press “ Hz/% ” button to switch to frequency mode.
4. Connect the test leads to the voltage source or between loads.
5. Read the measurement from the display.
6. Press “ Hz/% ” button to switch to duty mode.
Attention
：

The accuracy of reading is guaranteed between 10Hz ~ 10kHz.
Below 10Hz a “00.0” will show, above 10kHz range is still
measurable, but the reading is not guaranteed.

Range of Duty is 10 ~ 95%.