5
5. Touch the probes to the circuit you want
to test.
When you measure DC voltage,
–
appears
on the left side of the display if you touched
the black probe to a point in the circuit that
has a higher voltage potential than the point
where you connect the red probe.
Notes:
• In the 400 V and 400mV ranges, the
decimal point appears in the same
position (one place to the left). To
distinguish between the two ranges,
mV
appears in the 400mV range and
V
appears in the 400 V range.
• If the meter is set to the 400mV DC
manual range and you measure an over-
range input,
E$<
E$<E$<
E$<
continues to appear
even after you remove the input. This is
not a malfunction. If this happens, touch
the test leads together or change the
meter’s setting to clear it.
/GCUWTKPI"#%"8QNVCIG"4KFKPI"1P"
C"&%"5QWTEG"$KCU
WARNING:
To avoid injury or damage to
your meter, never try to measure an AC
voltage that is riding on a DC source bias
where the peak AC voltage exceeds 100 V
with respect to earth ground.
1. Rotate the function selector to
V
. The
meter automatically selects auto range
and the DC measurement mode.
2. Measure the DC voltage to ensure that it
does not exceed 100V.
3. Press
SELECT
to select the AC mode.
~
appears.
4. Turn off the power of the circuit under
test.
5. Connect the black test lead to the
circuit’s neutral or ground lead.
6. Connect a 0.1 microfarad/100V mylar
capacitor in series with the positive
terminal of the voltage source and the
red probe.
7. Apply the power to the circuit. The
display shows the AC voltage.
Warning:
To avoid electrical shock, do
not touch the test probes, capacitor, or
the circuit under test while applying
power.
8. When you finish measuring the AC
voltage, turn off the power of the circuit
under test, then disconnect the capacitor
you connected in Step 6.
/GCUWTKPI"6JTGG/2JCUG"#%"
8QNVCIG
Your multimeter is designed primarily to
measure household AC voltages. If you want
to measure 3-phase, line-to-line voltage,
please note the following:
• Because of the dangers inherent in
measuring three-phase circuit, we
strongly recommend you do not use this
meter for such applications.
• The actual voltage can be greater than
the circuit’s rated line-to-ground voltage.
Most 3-phase power circuits are rated by
their line-to-line voltage. This voltage is
higher than the line (or phase) to ground
voltage. To determine if a line-to-line 3-phase
voltage exceeds the rating of this meter,
multiply the rated line-to-ground voltage by
1.732 (the square root of 3). For example, if
the rated line-to-ground voltage is 400 volts,
the line-to-line voltage is 400
×
1.732 = 692.8
V AC.
WARNING:
This voltage exceeds the meter’s
rating. Therefore, you should not connect the
meter to this circuit or to any equipment
connected to the circuit. Doing so could
present a dangerous shock hazard to you,
and could also damage the meter.
/'#574+0)"&%1#%"%744'06
To measure AC or DC current, you must
break the circuit and connect the test leads to
two circuit connection points. The connection
must be in series with the circuit under test.
WARNING:
Do not apply voltage directly
across terminals. You must connect the
meter in series with the circuit.
Cautions:
• Never connect the test leads across a
voltage source. Doing so can damage
the meter or the circuit under test. The
maximum input limit for AC/DC current
measurement is 10A.
• If you do not know the amount of current
in the circuit you are measuring, always
connect the red test lead to
+10A MAX
.
1. Rotate the function selector to
µ
A/
A
for 0.4/4mA and 4/10A ranges or
mA/
A
for 40/400mA and 4/10A ranges.
2. Repeatedly press
SELECT
to set the
meter to measure AC current
(
∼
appears) or DC current
(
∼
disappears).
3. Remove the power from the circuit under
test and discharge all capacitors.
4. Plug the black test lead into
–COM
and
the red test lead into the appropriate
jack.
5. Connect the meter’s test leads in series
with the circuit.
6. Apply power and read the current.
If the measurement is less than 400mA,
connect the red test lead to
+ 10A MAX
,
and proceed to Step 7.
If the measurement is greater than
400mA, connect the red test lead to
+
10A MAX
, take the reading now, and do
not follow the remaining steps.
7. Remove power from the circuit.
8. Move the red test lead to
+ V.
Ω
.mA
.
9. Rotate the function selector to
µ
A/
A
for 0.4/4mA or
mA/A
for 40/400mA.
10. Reapply power to the circuit.
If the measured current’s polarity is negative,
–
appears before the value.
Notes:
• If your measurement exceeds the
currently selected range,
E$<
E$<E$<
E$<
appears
until the measured voltage or current is
reduced to a value below the currently
selected range.
•
+ V.
Ω
.mA
is fuse-protected. If the meter
does not show a reading in the 0.4/4mA
range or 40/400mA ranges, check the
fuse (see “Replacing the Fuse” on
Page 7).
/'#574+0)"4'5+56#0%'
The resistance measuring circuit in your
meter compares the voltage gained through a
known resistance (internal) with the voltage
developed across an unknown resistance.
WARNING:
Be sure the circuit under test has
all power removed and any associated
capacitors are fully discharged before you
make a resistance measurement.
Caution:
Your meter has a circuit to protect
the resistance range from over-voltage.
However, to avoid accidentally exceeding the
protection circuit’s rating and to ensure a
correct measurement, never connect the test
leads to a source of voltage while the function
selector is set to
•
.
1. Remove all power from the circuit under
test and discharge all capacitors.
2. Rotate the function selector to
•
.
Caution:
Never connect the test leads to
a source of voltage while the rotary
function selector is set to
•
.
3. Repeatedly press
SELECT
until
Ω,
K
Ω
,
or
M
Ω
appears to set the meter to measure
resistance.
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