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11

AC Current (Frequency, Duty Cycle) Measurements

 

CAUTION: Do not make 10 A current measurements for longer 

than 30 seconds. Exceeding 30 seconds may cause damage to 

the meter and/or the test.

1.  Insert the black test lead banana plug into the  

negative COM jack. 

2.   For current measurements up to 4000 

µ

A AC, set the 

rotary function switch to the yellow 

µ

A position and insert 

the red test lead banana plug into the 

µ

A/mA jack. 

3.  For current measurements up to 400 mA AC, set the rotary 

function switch to the yellow mA position and insert the 

red test lead banana plug into the 

µ

A/mA jack. 

4.  For current measurements up to 10 A AC, set the rotary 

function switch to the yellow 10A/Hz/% position and insert 

the red test lead banana plug into the 10A jack. 

5.  Press the MODE button to indicate “AC” on the display.

6.  Remove power from the circuit under test, then open  

at the point where you wish to measure current.

7.  Touch the black test probe tip to the neutral side of the  

circuit and touch the red test probe tip to the “hot” side  

of the circuit.

8. Apply power to the circuit. 

9. Read the current in the display.

10. Press the Hz/% button to indicate “Hz”.

11. Read the frequency in the display.

12. Press the Hz/% button again to indicate “%”.

13. Read the percent of duty cycle in the display.

14.  Press the Hz/% button to return to current measurement.

1065DGMAN_20250-64_Rev1.indd   11

07/02/2019   11:23:03 AM

Summary of Contents for 20250-64

Page 1: ...al THE STANDARD IN PRECISION MEASUREMENT Heavy Duty Autoranging Digital Multimeter with Bluetooth Mobile App and NIST Traceable Calibration Model 20250 64 1065DGMAN_20250 64_Rev1 indd 1 07 02 2019 11...

Page 2: ...ter app to your Android or iOS device Place the multimeter in Bluetooth mode and open the app on your smart device The meter will be sensed by your device and be listed as an available source that you...

Page 3: ...er that the terminal s so marked must not be connected to a circuit point at which the voltage with respect to earth ground exceeds in this case 1000VAC or 1000VDC This symbol adjacent to one or more...

Page 4: ...ies and disconnect the power when making resistance or diode tests 6 ALWAYS turn off the power and disconnect the test leads before opening the covers to replace the fuse or batteries 7 NEVER operate...

Page 5: ...K temperature probe 4 One 9 V battery 5 Carrying case 6 User manual 7 NIST traceable calibration report with data Key Features Bluetooth interface User friendly mobile app 4000 display count True RMS...

Page 6: ...ction switch 6 mA A and 10 A input jacks 7 COM input jack 8 Positive input jack 9 Hz and button 10 HOLD and Backlight button 11 RELATIVE and Bluetooth button Note Tilt stand and battery compartment ar...

Page 7: ...ps k kilo 103 M mega 106 Ohms Hz Hertz frequency V Volts Percent duty ratio REL Relative AC Alternating current AUTO Autoranging DC Direct current HOLD Display hold MAX Maximum MIN Minimum hFE Reserve...

Page 8: ...Measurements CAUTION Do not measure DC voltages if a motor on the circuit is being switched ON or OFF Large voltage surges may occur that can damage the meter 1 Set the rotary function switch to the g...

Page 9: ...motor on the circuit is being switched ON or OFF Large voltage surges may occur that can damage the meter 1 Set the rotary function switch to the green VAC Hz position 2 Insert the black test lead ba...

Page 10: ...to the yellow mA position and insert the red test lead banana plug into the A mA jack 4 For current measurements up to 10 A DC set the rotary function switch to the yellow 10A Hz position and insert t...

Page 11: ...current measurements up to 10 A AC set the rotary function switch to the yellow 10A Hz position and insert the red test lead banana plug into the 10A jack 5 Press the MODE button to indicate AC on th...

Page 12: ...of the part under test so the rest of the circuit will not interfere with the resistance reading 5 Read the resistance in the display Continuity Check WARNING To avoid electric shock never measure co...

Page 13: ...ces will indicate near 0 V and an open device will indicate OL in both polarities Frequency Duty Cycle Measurements Electronic 1 Set rotary function switch to the green Hz position 2 Press the Hz butt...

Page 14: ...ranging mode This automatically selects the best range for the measurements being made and is generally the best mode for most measurements For measurement situations requiring that a range be manuall...

Page 15: ...th Press and hold REL button to switch off Bluetooth The Bluetooth connectivity switches off as soon as the meter is switched off Relative Mode The relative measurement feature allows you to make meas...

Page 16: ...activate or to exit the Hold function Automatic Power Off In order to conserve battery life the meter will automatically turn off after approximately 15 minutes of nonuse To disable the auto power off...

Page 17: ...pecified from 5 of range to 100 of range DC Current 400 A 0 1 A 1 0 reading 3 digits 4000 A 1 A 40 mA 0 01 mA 400 mA 0 1 mA 4 A 0 001 A 1 5 reading 3 digits 10 A 0 01 A 10 A 30 sec max with reduced ac...

Page 18: ...gits 400 nF 0 1 nF 3 0 reading 5 digits 4 F 0 001 F 40 F 0 01 F 400 F 0 1 F 4000 F 1 F 5 0 reading 10 digits Frequency electronic 9 999 Hz 0 001 Hz 1 5 reading 5 digits 99 99 Hz 0 01 Hz 999 9 Hz 0 1 H...

Page 19: ...cle 0 1 to 99 9 0 1 1 2 reading 2 digits Pulse width 100 s to 100 ms Frequency 5 Hz to 150 kHz Note Accuracy specifications consist of two elements reading This is the accuracy of the measurement circ...

Page 20: ...isable feature Battery One 1 9 V NEDA 1604 battery Enclosure Double molded waterproof Shock drop test 6 5 ft 2 m Operating temp 41 to 104 F 5 to 40 C Storage temperature 4 to 140 F 20 to 60 C Operatin...

Page 21: ...ipe it off Use and store the meter in normal temperatures Temperature extremes can shorten the life of the electronic parts and distort or melt plastic parts Handle the meter gently and carefully Drop...

Page 22: ...ips head screwdriver 3 Insert the battery into battery holder observing the cor rect polarity 4 Put the battery cover back in place Secure with the screws WARNING To avoid electric shock do not operat...

Page 23: ...emove the old fuse and install the new fuse into the holder 4 Always use a fuse of the proper size and value 0 5A 1000V fast blow for the 400 mA range 10A 1000V fast blow for the 10 A range 5 Replace...

Page 24: ...librated annually to ensure proper function and accurate measurements however your quality system or regulatory body may require more frequent calibrations To schedule your recalibration please contac...

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