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3.9. Autopower
When the meter is not used for more than 15 minute, the built-in buzzer
will sound 5 times an turn into sleeping mode. 1 minute later, the buzzer
makes 1 long sound and will switch off completely. Press any key to restart
the meter.
4. Measuring
4.1. General
- If you are not sure about the correct range of a measurement, please
switch the range and function key to the highest range. Switch to a lower
range according to the displayed value.
- If the LCD displays '1' you have to switch to a higher range.
4.2. Voltage measurement
- Connect the black test lead (-) to the COM jack and the red test lead (-)
to the VΩ Hz jack.
- Select the range and function (V
for VDC and V
for VAC).
- The range is initially in AUTO mode, press the RANGE button to switch to
manual mode. You will have the choice between 400mV, 4V, 40V, 400V and
1000VDC/750VAC.
- Connect the test leads parallel across the voltage to be measured.
- The measured voltage is now displayed. If the red test lead is connected
with the negative pole, a '-' sign will be displayed.
- Be careful of electric shocks when measuring high voltages (max 1000VDC
or 750VAC). Do not touch the circuit!
4.3. Current measurement
- Connect the black test lead (-) to the COM jack and the red test lead (-)
to the mA jack for input values up to 400mA or to the 20A jack for input
values up to 20A.
- Select the range and function (A
for DC and A
for AC).
- Connect the test leads in series with the load in which the current is to be
measured.
- The measured current is now displayed. If the red test lead is connected
with the negative pole a '-' sign will be displayed.
- The maximum current is 400mA or 20A. Excessive current will blow the
fuse. Be careful with current values bigger than 20A as this is unfused.
Continuously measuring large current may heat the circuit, affect the accu-
racy and may even damage the meter.
4.4. Resistance measurement (Ω)
- Connect the black test lead (-) to the COM jack and the red test lead (+)
to the VΩHz jack.
- Select the range and function (Ω) using the range and function switch and
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