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1-800-547-5740 • Fax: (503) 643-6322

www.ueitest.com • email: [email protected]

DM391/393

INSTRUCTION MANUAL

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Summary of Contents for DM391

Page 1: ...1 800 547 5740 Fax 503 643 6322 www ueitest com email info ueitest com DM391 393 INSTRUCTION MANUAL...

Page 2: ...user to serious or possibly fatal injury Voltages above 60 volts DC or 25 volts AC may constitute a serious shock hazard Always turn off power to a circuit or assembly under test before cutting unsold...

Page 3: ...Press the HOLD push button for two seconds to turn the backlight ON or OFF when the HOLD function is simultaneously activated with the D H symbol on the display Press the HOLD push button momentarily...

Page 4: ...0 V DC or AC RMS Resistance Measurement Ohms Diode and Continuity DM391 393 MAN P 3 WARNING To avoid damaging the meter or the equipment under test remove all power from the circuit and discharge all...

Page 5: ...or current signal by counting the number of times the signal crosses a threshold level each second To measure the frequency of a voltage or current signal press the Hz Duty push button momentarily wh...

Page 6: ...current Use the proper terminals functions and range for current measurements Never place the probes in parallel with any circuit or component when the test leads are plugged into the current termina...

Page 7: ...n circuit In this case the series fusible resistors and the spark gaps should be replaced by qualified personnel Refer to the LIMITED WARRANTY LIMITATIONS OF LIABILITY section for obtaining warranty o...

Page 8: ...temperature 32 to 104 F 0 to 40 C Storage temperature 4 to 140 F 20 to 60 C Temperature coefficient Nominal 0 15 x specified accuracy C 0 to 8 C or 28 to 40 C or otherwise specified Relative humidity...

Page 9: ...400mA 100 A 4A 1mA 10A 10mA 1 5 10 1 5 10 2 0 10 Range Resolution Accuracy DM391 DM393 400 0 1 1 0 5 1 0 5 4000 1 40k 10 400k 100 0 5 3 0 5 3 4M 1k 1 0 5 1 0 5 10M 10k 1 5 10 1 5 10 Audible threshold...

Page 10: ...taneous peak value to the True RMS value which is commonly used to define the dynamic range of a True DMM A pure sinusoidal waveform has a Crest Factor of 1 414 A badly distorted sinusoidal waveform n...

Page 11: ...ited to implied warranties of merchantability and fitness for a particular purpose are limited to the express warranty UEi shall not be liable for loss of use of the instrument or other incidental or...

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