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7
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OPERATION
Before taking the measurement of voltage with the probe, make sure there is
no electronic device connected to the test socket of the instrument.
PREPARATION
1. Switch on the power by turning the rotary switch. If the battery voltage is
lower than 7V, the symbol will appear and the battery should be
replaced.
• The " " symbol next to the input lead shows that the input voltage or
current should not exceed the specified value in order to protect the
internal circuit from damage.
2. Turn the rotary switch to the required function and range to be measured.
3. Choose the highest range when the value to be measured is unknown.
• When making a connection, connect the black common test lead first
and then the positive red test lead.
4. Remove the positive test lead first when disconnecting.
READING HOLD
1. Press “
HOLD
” button to hold the readings of current measurement.
2. Press the “
HOLD
” button again to release the hold.
DC/AC VOLTAGE MEASUREMENT
1. Plug the black test lead into the “
COM
” jack and the red test lead into the
"VTemp
Ω
Hz"
jack.
2. Set the rotary switch to the "
V
" position for DC measurement and
"V~
" for
AC measurement and at the proper range.
3. Connect the test leads to the voltage source or load for measurement.
4. Read the value on the main indicator of the LCD. The polarity symbol
denotes the polarity of the end connected by the red test lead.
NOTE:
At small voltage ranges, unsteady readings will appear before
the test leads make contact with the circuit. This is normal since
the meter is highly sensitive. When the test leads are
connected to the circuit, the true reading will be shown.
WARNING: USE CAUTION WHEN MEASURING HIGH VOLTAGE CIRCUITS TO
AVOID ELECTRICAL SHOCK AND INJURY. DO NOT TEST VOLTAGES HIGHER
THAN 600V DC/600V AC.
Содержание CDM45C
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