38XR-A
Professional
Digital
Multimeter
True-RMS with
Optical PC Interface
Users Manual
.
Mode d'emploi
.
Bedienungshandbuch
.
Manuale d'Uso
.
Manual de uso
RS232
38XR-A
1
2
3
5
MADE IN TAIWAN
PATENTS PENDING
www.amprobe.com
6
4
38XR-A
38XR-A
Professional Digital Multimeter
Users Manual
•
Mode d’emploi
•
Bedienungshandbuch
•
Manuale d’Uso
•
Manual de uso
PN 2728963
July 2006
©2006 Amprobe
®
Test Tools.
All rights reserved. Printed in Taiwan.
38XR-A 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 (oor
-o)
Indication
W
............................................3
Measuring DC Voltage .................................................... See Figure
-1-
.........4
Measuring AC + DC Voltage (True rms)................. See Figure
-2- & -3-
.........4
Measuring AC Voltage (True rms).......................... See Figure
-2- & -3-
.........4
Preparing for Current Measurements...............................................................4
Measuring DC Current .................................................... See Figure
-4-
.........5
Measuring AC or AC+DC Current (True rms) ............... Figure
-3- & -5-
.........5
Measuring Resistance .................................................... See Figure
-6-
.........5
Testing for Continuity ..................................................... See Figure
-7-
.........6
Testing Diodes ................................................................ See Figure
-8-
.........6
Measuring Capacitance .................................................. See Figure
-9-
.........6
Measuring Temperature ............................................... See Figure
-10-
.........6
Measuring Frequency ................................................... See Figure
-11-
.........7
Measuring Dutycycle ................................................... See Figure
-12-
.........7
Measuring dBm ........................................................... See Figure
-13-
.........7
Measuring 4-20 mA Loop Current ..................................................................7
Additional Features .............................................................................................7
Input Test Lead Warning..................................................................................7
True-rms Measurements .................................................................................8
MIN MAX AVG Measurements .........................................................................8
Peak Hold Measurements ................................................................................8
Beeper Off........................................................................................................9
Auto Power Off ................................................................................................9
REL (Relative) Measurements..........................................................................9
HOLD Measurements.......................................................................................9
RS232 Download Software (38SW).............................. See Figure
-14-
.......10
Backlight ........................................................................................................10
Product Maintenance ........................................................................................10
Battery and Fuse Replacement...................................... See Figure
-15-
.......10
Repair ...............................................................................................................11
WARRANTY ...................................................................................................12
Specifications ...................................................................................................12
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