1
37XR Digital Multimeter
Contents
Safety Information.......................................................................................... 2
Symbols Used in this Manual....................................................................... 2
Introduction.................................................................................................... 3
Making Measurements.................................................................................... 3
Verify Instrument Operation......................................................................... 3
Range Selection........................................................................................... 3
Correcting an Overload (
o
or
-
o
) Indication ............................................... 3
Measuring DC Voltage ....................................See Figure -1-....................... 4
Measuring AC Voltage (True rms) .........See Figure -2 - & -3-....................... 4
Preparing for Current Measurements............................................................ 4
Measuring DC Current ....................................See Figure -4-....................... 4
Measuring AC Current (True rms) ..........See Figure -3- & -5-....................... 4
Measuring Resistance ....................................See Figure -6-....................... 5
Testing for Continuity .....................................See Figure -7-....................... 5
Testing Diodes................................................See Figure -8-....................... 5
Measuring Capacitance ..................................See Figure -9-....................... 5
Measuring Inductance...................................See Figure -10-....................... 6
Measuring Frequency ...................................See Figure -11-....................... 6
Measuring Dutycycle ....................................See Figure -12-....................... 6
Measuring dBm ...........................................See Figure -13-....................... 6
Testing Logic Levels ....................................See Figure -14-....................... 6
Additional Features ......................................................................................... 7
Input Test Lead Warning.............................................................................. 7
True-rms Measurements.............................................................................. 7
MIN MAX AVG Measurements...................................................................... 7
Peak Hold Measurements............................................................................. 7
Beeper Off ................................................................................................... 8
Auto Power Off ............................................................................................ 8
REL (Relative) Measurements ...................................................................... 8
HOLD Measurements................................................................................... 8
Backlight ..................................................................................................... 8
Product Maintenance...................................................................................... 9
Battery and Fuse Replacement ......................See Figure -15-....................... 9
Repair ............................................................................................................ 9
WARRANTY............................................................................................... 10
Specifications ............................................................................................... 11
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