Ames Instruments 64014 - Diode Measurement; Current Measurement

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Test voltage drop in diodes.
QFKMLMR` To prevent electric shock, turn
off all power and fully discharge capacitors
in the circuit under test before measuring.
1. Plug black test lead into OIN Jack.
Plug red test lead into L8/'$ Jack.
2. Turn the Rotary Switch
to the
Turn the Rotary Switch
position.
3. Press ;PMO%until is displayed.
4. Connect red probe to diode’s anode (+)
and black probe to its cathode (-).
5. Read measured forward-biased
voltage drop on the Display.
M&$*- If the test leads are reversed
or open, IT is displayed.
M&$*- When testing is complete,
turn Rotary Switch to I;;, remove
Test Leads and store with Meter.
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Measure current in AC and DC circuits carrying up to 10 amperes.
M&$*-% Amperage is always tested
in series with circuit under test.
M&$*- When using manual range
mode, always start with the highest
range if the amperage is unknown.
QFKMLMR` Check fuses before
making current measurements. To
prevent damage to the meter, be sure
to use the correct input jacks.
1. Turn the Rotary Switch to the
appropriate position, depending on the
amperage of the circuit under test.
• Selections are
microamperes,
milliamperes, or %amperes.
2. Press ;PMO to select AC or DC.
3. Always start with the highest range
if the amperage is unknown.
4. Turn off power to the circuit and
allow capacitors to discharge.
QFKMLMR` To prevent damage to
the Meter, never measure open-circuit
voltages exceeding 600V between
the input terminals and ground.
5. Break the circuit and connect the
Test Leads in series with the circuit
being measured. Connect the black
lead on the lower voltage side.
• Plug black test lead
into OIN Jack.
• If amperage is < 200mA, plug
red test lead into L8/'$ Jack.
• If amperage is > 200mA
(10A maximum), plug red
test lead into Jack.
6. Power on the circuit and read
measurement. If “IT” is displayed
then the measurement exceeds
the current rating. Move the
rotary switch to a higher range.
M&$*- Measure for a maximum 30
seconds and allow 15 minutes to
pass between measurements.
7. When testing is complete, turn
Rotary Switch to I;;, remove
Test Leads and store with Meter.