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For technical questions, please call 1-888-866-5797.

Item 64021

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Hz% Button

The 

Hz%

 (frequency/duty cycle) Button allows you to measure the frequency 

and duty cycle (the ratio of time a load or circuit is on verses off) of a signal.

1.  To measure the frequency/duty cycle, 

press the 

Hz%

 Button.  Frequency (Hz)

is the default measurement mode.

2.  To measure 

Duty cycle

press the 

Hz%

 Button again 

to select 

%

 measurement.

3.  To exit the frequency/duty 

cycle measuring mode, 
press the 

Hz%

 Button.

HOLD / LiGHt Button

The 

HOLD/LiGHt

 Button has two functions:  To hold the present 

reading on the Display and to turn on the Display’s backlight.

1.  To activate 

HOLD

, hold down the 

HOLD/LiGHt

 Button until the 

meter beeps and the 

 

symbol 

appears on the Display.

2.  When in 

HOLD

 mode, the present 

reading will be held on the Display.

3.  To exit HOLD, hold down the 

HOLD/LiGHt

 Button until the 

meter beeps and the 

 

symbol 

disappears from the Display.

note:

  The Hold mode will not capture 

unstable or noisy readings.

4.  To turn on the Display’s backlight, 

hold down the 

HOLD/LiGHt

 

Button for about 2 seconds.

5.  The backlight will automatically 

turn off after about 10 seconds.

note:

  Frequent use of the backlight 

shortens the life of the battery(ies).  Only 
use the backlight when necessary.

Blue Button

The Blue Button is used to enable available modes for a selection on the Rotary Switch.

auto power-Off   and Sleep Mode 

If the Meter is not used for approximately 15 minutes, it automatically 
turns itself off to conserve battery power.  The Meter’s default is enabled 

auto power-Off 

which is indicated by   appearing on the Display.

1. 

Sleep Mode

 is active when 

 is seen on the display.

2.  To turn the Meter back on after 

auto power-off, press any Button 
or turn the Rotary Switch.

3.  To disable 

auto power-Off

, hold down 

the 

Blue

 Button while turning on the 

Meter.  The   symbol will not display 
when Auto Power-Off is disabled.

Bar Graph

The bar graph updates faster than the digital display.  This can be used 
for monitoring changes in measurements at a higher sampling rate.  
The bar graph indicates polarity (

-

) and overload (   

OL

).

Summary of Contents for 64021

Page 1: ...ence 18k When unpacking make sure that the product is intact and undamaged If any parts are missing or broken please call 1 888 866 5797 as soon as possible Copyright 2018 by Harbor Freight Tools All...

Page 2: ...sed to alert you to potential personal injury hazards Obey all safety messages that follow this symbol to avoid possible injury or death Indicates a hazardous situation which if not avoided will resul...

Page 3: ...the Meter have it serviced before use f The battery cover is open 5 Power this Meter using only the battery ies referenced in the Specifications Chart 6 Use caution when working near voltages above 3...

Page 4: ...ter may vary depending on battery condition 24 Use the proper settings terminals techniques and range for the tests performed Start with the range stated in the instructions 25 Do not apply voltage to...

Page 5: ...nt Accuracy 600 A 6000 A 1 2 of rdg 5D 60mA 600mA 1 5 of rdg 5D 6A 10A 2 0 of rdg 5D Resistance Ranges 600 6k 60k 600k 6M 60M Resistance Accuracy 600 1 2 of rdg 2D 6k 600k 1 0 of rdg 2D 6M 1 2 of rdg...

Page 6: ...ing of this manual including all text under subheadings therein before set up or use of this product Functions Milli Micro amp temperature input Jack common input Jack capacitance Volts Ohms Frequency...

Page 7: ...selection mode Continuity Diode test rEL Relative measurement mode MaX The maximum value is being measured Min The minimum value is being measured Battery low Percent Duty cycle c F Celsius Fahrenheit...

Page 8: ...aX Min Button The MaX Min Button allows you to record temporarily store and view signal events as you monitor them You may record while in any range or mode except Hz frequency duty cycle 1 Press the...

Page 9: ...ote The Hold mode will not capture unstable or noisy readings 4 To turn on the Display s backlight hold down the HOLD LiGHt Button for about 2 seconds 5 The backlight will automatically turn off after...

Page 10: ...Plug red test lead into V Hz input Jack 2 Turn Rotary Switch to the V Hz or mV Hz position as appropriate 3 Press Blue Button to choose AC or DC voltage 4 Carefully touch exposed conductors with tips...

Page 11: ...modes resistance Measurement Measure resistance up to 60M Ohms WarninG to prevent electric shock turn off all power and fully discharge capacitors in the circuit under test before measuring note When...

Page 12: ...store with Meter note If Test Leads are open or the resistance is out of range OL is displayed The buzzer does not sound if the resistance is greater than 100 Diode Measurement Test voltage drop in di...

Page 13: ...fore measuring 1 Plug black test lead into cOM Jack Plug red test lead into V Hz input Jack 2 Turn the Rotary Switch to the position 3 Press Blue Button until nF is displayed 4 Press the rEL button to...

Page 14: ...he circuit and allow capacitors to discharge 4 Press Blue Button to select AC or DC current The Meter default is DC current measurement 5 Break the circuit and connect the Test Leads in series with th...

Page 15: ...cement If the sign appears on the Display the battery should be replaced 1 Remove Test Leads from the Meter 2 Power off Meter and turn it over 3 Remove screw s Remove tilt stand and battery cover 4 Re...

Page 16: ...you THIS WARRANTY IS EXPRESSLY IN LIEU OF ALL OTHER WARRANTIES EXPRESS OR IMPLIED INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS To take advantage of this warranty the product or part must be...

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