background image

FUNCTIONS

Autoranging/
Manual

 The meter’s default setting is autoranging. This 
automatically selects the best range for the selected 
test/measurement.
•  To set the meter to manual, press the “RANGE” 

button. The AUTO icon on the screen will turn off.

•  Press the “RANGE” button to move through the 

available ranges until you see the range you want.

•  To exit manual mode and return to autoranging, 

press and hold the “RANGE” button for 2 seconds.

Mode

The “MODE” button helps you to move through 
various operations with various icons displayed 
on-screen. It works in conjunction with the function 
switch to measure things like resistance, diode, 
continuity and capacitance. It also allows you to select 
between AC or DC current measurements.

Function 
Switch

Select a measurement range by turning the switch to 
the preferred option.

LCD Screen

Readings and measurements taken by the multimeter 
will display in this area.

Backlight

•  Press the BACKLIGHT button for 2 seconds to light 

up the LCD screen.

•  Press the button again to exit the backlight mode.

Relative 
Button

This allows you to make measurements relative to a 
stored reference value. The displayed value is then 
the difference between the referenced (stored) value 
and the measured value.
•  Press the REL button to store a reading. The REL 

indicator will appear on the display. 

•  The display will now indicate the difference 

between the stored value and the measured value. 

•  Press the REL button to exit the relative mode.

4

Summary of Contents for QM1549

Page 1: ...RELATIVE MODE DATA HOLD 4000 DISPLAY COUNT CAT IV 600V LIFETIME WARRANTY Autoranging True RMS IP67 Digital Multimeter SPECIALIST...

Page 2: ...g this manual for ease of reference Improper use of this meter can cause damage shock injury or death Always remove the test leads before replacing the battery or fuses Before using the meter please i...

Page 3: ...Hz Up to 10MHz FUNCTIONS Continuity Yes Data Hold Yes Relative Measurement Yes Diode Test Yes Duty Cycle Yes Autoranging Yes LCD Backlight Yes Auto Power Off Yes The fuse battery compartment are at th...

Page 4: ...continuity and capacitance It also allows you to select between AC or DC current measurements Function Switch Select a measurement range by turning the switch to the preferred option LCD Screen Readi...

Page 5: ...the HOLD button to hold a measurement on screen for reference at a later time HOLD will display on the screen Press the HOLD button again to return back to normal measurements Input Jacks V CAP Positi...

Page 6: ...to observe the correct polarity red lead to positive black lead to negative 5 Read the voltage in the display The display will indicate the proper decimal point and value If the polarity is reversed t...

Page 7: ...d insert the red test lead banana plug into the mA jack 10A DC set the function switch to the A position and insert the red test lead banana plug into the 10A jack 3 Press the mode button until DC app...

Page 8: ...king any resistance measurements Remove the batteries and unplug the line cords 1 Set the function switch to the position 2 Insert the black test lead banana plug into the negative jack COM and the re...

Page 9: ...ng the diode check is the forward voltage CAPACITANCE MEASUREMENTS WARNING To avoid electric shock disconnect power to the unit under test and discharge all capacitors before taking any capacitance me...

Page 10: ...Range 50 400Hz All AC voltage ranges are specified from 5 to 100 of range All AC voltages are autoranging except for 400mV RANGE RESOLUTION ACCURACY 400mV 0 1mV 0 5 reading 2 digits 4V 1mV 1 2 reading...

Page 11: ...00 A 1 A 1 5 reading 3 digits 40mA 10 A 400mA 100 A 10A 10mA 2 5 reading 5 digits Overload Protection 0 5A 1000V and 10A 1000V fuse Maximum Inputs 400mA DC RMS on A mA ranges 10A DC RMS on 10A range A...

Page 12: ...C or 600VAC RMS DUTY CYCLE RANGE RESOLUTION ACCURACY 0 1 99 9 0 1 1 2 reading 2 digits 12 Pulse Width 100 s 100ms Frequency Width 5Hz 150kHz Sensitivity 0 8V RMS Overload Protection 600VDC or 600VAC R...

Page 13: ...ng 4 digits FREQUENCY Overload Protection 600VDC or 600VAC RMS Sensitivity 0 8V RMS while 1MHz 3V RMS while 1MHz 13 THRESHOLD TEST CURRENT Less than 150 0 3mA AUDIBLE CONTINUITY Overload Protection 60...

Page 14: ...tery cover back in place secure with the screws REPLACING FUSES 1 Turn power off and disconnect the test leads from the meter 2 Remove the cover 3 Gently remove the old fuse and install the new fuse i...

Page 15: ...Low Battery Indication BAT is displayed if battery voltage drops below operating voltage Battery 1 x 9V Operating Temperature 0 C to 50 C Storage Temperature 20 C to 60 C Operating Humidity 70 Storage...

Page 16: ...pect your product is defective faulty cease using the product when the suspected defect fault arises and return the product along with proof of purchase to the place of purchase or distributor for ass...

Reviews: