REED ST-333, Instruction Manual, Page: 9 / 12

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9
Operation
NOTICE:
Read and understand all
warning
and
precaution
statements listed in the safety section of this operation manual prior
to using this meter. Set the function select switch to the OFF position
when the meter is not in use.
AC Current Measurements
WARNING:
Ensure that the test leads are disconnected from the meter
before making current clamp measurements.
1. Set the Function switch to the
400A, 40A or 4A
range. If the range of
the measured is not known, select the higher range first then move to
the lower range if necessary.
2. Press the trigger to open jaw. Fully enclose one conductor to be measured.
3. The clamp meter LCD will display the reading.
DC/AC Voltage Measurements
1. Insert the black test lead into the negative COM terminal and the red
test lead into the positive V terminal.
2. Set the function switch to the
V
position.
3. Select AC or DC with the MODE button.
4. Connect the test leads in parallel to the circuit under test.
5. Read the voltage measurement on the LCD display.