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1. Display 

3 1/2 digit, 7 segment, 15mm high LCD. 
 

 

2. Back light (option) 

When this button is pushed, the Back light of display is 
on. After about 5 seconds, the Back light is self-off. The 
Back light is on again, just push this button once. 
 

 

3. Function and range switch 

This  switch  is  used  to  select  functions  and  desired 
ranges as well as to turn on/off the meter. 
 

 

4. Hold function 

When  this  button  is  pushed,  the  display  will  keep  the 
last  reading  and  “

 

symbol  will  appear  on  the  LCD 

until pushing it again. 
 

 

5. 

“10A” jack 

Plug in connector for red test lead for 10A measurement 

 

 

6. 

“COM” jack

   

Plug in connector for black (negative) test lead. 

 

 

7. 

V

mA jack

 

Plug in connector for red (positive) test lead for voltage, 
resistance and current (except 10A) measurements 

 

 

 

 

 

Summary of Contents for MAS830

Page 1: ...MAS830L MAS830 MAS830B MAS838 Instruction Manual DIGITAL MULTIMETER ...

Page 2: ...ection of an overload protection circuit making it a superior and handy instrument It can be used to measure DC and AC voltage DC current resistance diodes transistors temperature and for in circuit continuity test Measurement features of the types of this series Features MAS 830L MAS 830 MAS 830B MAS 838 Alternating Voltage measurement V Direct Voltage measurement V Direct Current measurement A R...

Page 3: ...ch is used to select functions and desired ranges as well as to turn on off the meter 4 Hold function When this button is pushed the display will keep the last reading and symbol will appear on the LCD until pushing it again 5 10A jack Plug in connector for red test lead for 10A measurement 6 COM jack Plug in connector for black negative test lead 7 V mA jack Plug in connector for red positive tes...

Page 4: ...FRONT PANEL 3 ...

Page 5: ...to damage the replacement must be of the same type or the same electrical specifications Do not exceed the input limit specified for each range When the instrument is measuring do not touch the input terminal not in use When a measurement range is uncertain turn the function range switch to the maximum range position Before turning the function range switch make sure the probe is open with the cir...

Page 6: ...k and the screws are tightened Clean the housing of the instrument only with a wet rag dripped with little detergent but never chemical solution In case of the any abnormality stop using it and sent it for maintenance Technical data Accuracy of reading 5 digits one year warranty Ambient temperature 18 to 28 Ambient humidity 80 General features Maximum voltage between terminals and earth ground CAT...

Page 7: ...10 A 1 of rdg 5 digits 200mA 100 A 1 5 of rdg 3 digits 10A 10mA 3 of rdg 10 digits Overload Protection F1 200mA 250V Fuse F2 10A 250V MAS838 no 20 A positon Alternative voltage measurement Range Resolution Accuracy 200V 100mV 1 2 of rdg 10 digits 600V 1V 1 2 of rdg 10 digits Overload Protection 600V dc or rms Frequency range 40Hz to 400Hz Display Average effective value of sinusoid RESISTANCE Rang...

Page 8: ...s Notices before operation 1 Plug the instruction check the 9V battery if it is slow the symbol will display requiring battery replacement Otherwise follow the steps below 2 The besides the probe jack indicates that the input voltage or current should not exceed the specified limits to protect the internal circuit 3 Before measurement turn the function range switch to the desired range Direct volt...

Page 9: ...il satisfactory resolution 2 If the display shows 1 this indicates an overrange measurement and the switch should be set to a higher range 3 The symbol beside the probe indicates the maximum input current is 200mA or 10A depending on the inserted jack Overcurrent will blow the fuse Notice 1 If you do not know the measured voltage range in advance set the function range switch to the maximum range ...

Page 10: ...COM jack the red one into the V mA jack Connect the red test lead to V mA jack and the black Turn the switch to the range and connect the red probe to the positive pole of the diode being measured and the black one to the negative pole read the approximate forward voltage drop of the diode on the display 9 Notice 1 If the resistor being measured is greater than the maximum value of the selected ra...

Page 11: ...el with two points is less than 100 the built in buzzer will beep to indicate the continuity between the two points Temperature measurement 1 2 Turn the switch to the position and insert the black probe of the thermocouple sensor into COM jack the red one into the V mA jack Place the operating terminal temperature measured and directly read the temperature value in on the display When the switch i...

Page 12: ...d after replacing battery or fuse Attachments Instruction manual one copy Probe one pair Package one piece 9 V battery NEDA 1604 6F22 one provided in the multimeter K thermocouple sensor one piece MAS838 only Rubber case optional 11 WARNING To avoid electric shock make sure the probe are disconnected from the measured circuit before removing the rear cover Make sure the rear cover is tightly screw...

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