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4. Operating Instructions
4.1 AC/DC voltage measurement
•
Set the rotary switch to the AC/DC voltage position.
• Press "FUNC" to switch between AC and DC voltage.
• Connect the red test lead to the input jack and the black
lead to the COM jack.
• Connect the leads to the circuit under test and read the
measurement on the display.Observe polarity for DC
measurements.If "OL" is display, it means the
measurement has exceeded the current range.Move the
rotary switch to a higher range.
WARNING
Do not measure voltages higher than 600V DC or
ACrms to prevent damage to the meter or personal
injury
4.2 AC/DC current measurementrent
• AC/DC current measurement
• Turn off power to the circuit. Allow all capacitors to
discharge.
• Set the rotary switch to the appropriate AC/DC current
range.
• Press "FUNC" to switch between AC and DC current.
• Depending on the current to be measured, connect the
red test lead to either the input or 10A jack and the black
lead to the COM jack.
• Break the circuit and connect the leads in series with
the circuit (black lead on the lower voltage side).
• Turn circuit power on and read the measurement on
the display.If "OL" is display, it means the measurement
has exceeded the current range.Move the rotary switch
to a higher range.
07
WARNING
Never measure open-circuit voltages exceeding
600V between the input terminals and ground to
prevent injury or damage to the meter
WARNING
Check fuses before making current measurements.
Make sure to use correct input jicks to prevent
damage to the meter.
4.3 Resistance measurement
•
Turn off power to the circuit. Allow all capacitors to
discharge.
• Set the rotary switch to the multi-function position. The
default function is resistance.
• Connect the red test lead to the input jack and the black
lead to the COM jack.
• Connect the leads to the circuit under test and read the
measurement on the display.
Tips for measuring resistance:
•
In-circuit resistance is usually different from a resistors
rating due to the fact that the meter's test current flows
in parallel with the circuit.
• For increased accuracy when measuring low resistances,
short the test leads, record the value displayed, then
connect the leads to the circuit and subtract the shorted
value from the circuit measurement.
• When the leads are disconnected from the circuit under
test, "OL" will be displayed on the screen.
WARNING
To prevent injury or damage to the meter ,turn off
power to circuit and discharge all capacitors fully
before making resistance measurements.
08
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