3
Introduction
The 33XR-A is a manual ranging handheld digital multimeter for measuring or
testing the following:
•
DC and AC voltage
•
Temperature
•
DC and AC current
•
Capacitance
•
Resistance
•
Diodes
•
Frequency
•
Continuity
Additional features include the following modes:
MIN MAX, HOLD, REL (relative), and Peak±
Making Measurements
Verify Instrument Operation
Before attempting to make a measurement, verify that the instrument is operational
and the battery is good. If the instrument is not operational, have it repaired before
attempting to make a measurement.
Correcting an Overload (
o
) Indication
W
An
o
indication may appear on the display to indicate that an overload condition
exists. For voltage and current measurements, an overload should be immediately
corrected by selecting a higher range. If the highest range setting does not
eliminate the overload, interrupt the measurement until the problem is identified
and eliminated. The
o
indication is normal for some functions; for example,
resistance, continuity, and diode test.
Measuring DC Voltage
See Figure
-1-
1.
Set the Range Switch to an appropriate
v
range.
Select the highest range and work down if the voltage level is unknown.
2.
Connect the Test Leads: Red to
E
, Black to
COM
3.
Connect the Test Probes to the circuit test points.
4.
Read the display, and, if necessary, fix any overload (
o
) conditions.
Measuring AC Voltage
See Figure
-2-
1.
Set the Range Switch to an appropriate
V
range.
Select the highest range and work down if the voltage level is unknown.
2.
Connect the Test Leads: Red to
E
, Black to
COM
3.
Connect the Test Probes to the circuit test points
4.
Read the display, and, if necessary, fix any overload (
o
) conditions.
Preparing for Current Measurements
•
Turn off circuit power before connecting the test probes.
•
Allow the meter to cool between measurements if current measurements
approach or exceeds 10 amps.
•
A warning tone sounds if you connect a test lead to a current input before you
select a current range.
•
Open circuit voltage at the measurement point must not exceed 1000 V.
•
Always measure current in series with the load. Never measure current across a
voltage source.
www.
.com
information@itm.com
1.800.561.8187
Summary of Contents for 33XR-A
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