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3)    Read the result from the LCD panel. 

 

Note: 

See DC voltage measurement note a)

d). 

 

3.3    DC Current Measurement 

1)    Set the selector switch to desired “

mA

” position. 

2)    Remove power from the circuit under test and open the normal circuit path 

 

where the measurement is to be taken. Connect the meter in series with 

     

the circuit. 

3)    Read the result from the LCD panel. The polarity of the red lead connection will 

 

be indicated along with the DC current value. 

 

Note: 

a)    If the current range is not known beforehand, set the selector switch to high 

 

range and work down. 

b)    When “1” or “-1” is display, over-range is being indicated and the selector switch 

 

must be set to a higher range. 

c)    The maximum input current is 500mA, the 0.5A/600V fuse protect the current 

 

measuring circuits. 

 

3.4    Resistance Measurement 

1)    Set the selector switch to desired “

Ω

” position. 

2)    Connect tip of the test leads to the points where the value of the resistance 

   

is needed. 

3) 

Read the result from the LCD panel. 

 

Note: 

a)    If the resistance value being measured exceeds the maximum value of the range 

 

selected, an over-range indication will be displayed (“1”), select a higher range. 

 

For resistance of approximately 1 megohm and above, the meter may take a few 

 

seconds to stabilize, this is normal for high resistance readings. 

b)    When the input is not connected, i.e at open circuit, the sign “1” or “-1” will be 

 

displayed for the over-range condition. 

c)    When checking in-circuit resistance, be sure the circuit under test has all power 

 

removed and that all capacitors are fully discharged. 

 

3.5    Diode Test 

1)    Set the selector switch to desired “ ” position. 
2)    Connect the test leads across the diode under measurement, display shows 
   

the approx. forward voltage of this diode. 

 
 

 

Summary of Contents for MTD30

Page 1: ...ection for electrical and electronic equipment The RESPONSIBLE BODY shall be made aware that if the instrument is used in a manner not specified by the manufacturer the protection provided by the instrument may be impaired The finger or any part of your body shall not be beyond the barrier of the test probe when measuring Individual protective equipment must be used if HAZARDOUS LIVE parts in the ...

Page 2: ... data 1 8 Use the DMM indoor altitude up to 2000m and temperature 5 to 40 Maximum relative humidity 80 for temperatures up to 31 decreasing linearly to 50 relative humidity at 40 Pollution Degree 2 2 SPECIFICATIONS 2 1 GENERAL SPECIFICATIONS Display LCD with a max reading of 1999 Range control Manual range control Polarity Automatic negative polarity indication Zero adjustment Automatic Over range...

Page 3: ...2 2 AC Voltage Range Accuracy Resolution 200V 1 5 3 100mV 500V 1V Average sensing calibrated to rms of sine wave Frequency 40 500Hz Overload protection 500V DC or AC rms Impedance 450kΩ 2 2 3 DC Current Range Accuracy Resolution 2000μA 1 5 2 1μA 20mA 10μA 200mA 2 0 2 100μA Overload protection F0 5A 600V fuse 2 2 4 Resistance Range Accuracy Resolution 200Ω 1 0 5 0 1Ω 2000Ω 1 0 3 1Ω 20kΩ 10Ω 200kΩ 1...

Page 4: ...here the value of voltage is needed 3 Read the result from the LCD panel The polarity of the red lead connection will be indicated along with the DC voltage value Note a If the voltage range is not known beforehand set the selector switch to high range and work down b When 1 or 1 is display over range is being indicated and the selector switch must be set to a higher range c Don t apply more than ...

Page 5: ...circuits 3 4 Resistance Measurement 1 Set the selector switch to desired Ω position 2 Connect tip of the test leads to the points where the value of the resistance is needed 3 Read the result from the LCD panel Note a If the resistance value being measured exceeds the maximum value of the range selected an over range indication will be displayed 1 select a higher range For resistance of approximat...

Page 6: ...ttery need to changed 2 Before changing the battery set the selector switch to OFF position to power off 3 Remove the screw on the battery cover and lift the battery cover 4 Replace the old battery with the same type battery 5 Close the battery cover and fasten the screws Caution Dispose the used batteries according to the rules which are defined by each community Warning If an explosion or fire h...

Page 7: ... case is closed 2 To avoid contamination or static damage do not touch the circuit board without proper static protection 3 If the meter is not going to be used for a long time take out the battery and do not store the meter in high temperature or high humidity environment 4 Repairs or servicing not covered in this manual should only be conducted by a qualified person 5 Periodically wipe the case ...

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