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Safety   

DANGER 

  Engines produce carbon monoxide which is 

odorless,  can cause slower reaction time  and 
can lead to serious injury. When the engine is 
operating,  always  keep service areas WELL 
VENTILATED  or  attach the vehicle exhaust 
system to the shop exhaust removal system. 

 
 

  Set the parking brake and block the wheels 

before testing or repairing the vehicle. It is 
especially important to block the wheels on 
front-wheel drive vehicles; the parking brake 
does not hold the drive wheels. 

 

  Wear an eye shield when testing or repairing 

vehicles. 

 
Exceeding the limits of this meter is dangerous. 
This may expose you to serious or possibly fatal 
injury.  Carefully read and understand the 
cautions and the specification limits of this 
meter. 

  Voltage between any terminal and ground 

must not exceed 600V DC or 600V AC. 

 

  Use caution when measuring voltage above   

25VDC or 25VAC. 

 

  Circuit tested must be protected by a 20A fuse or circuit breaker. 

 

  Do not use the meter if it has been damaged. 

 

  Do not use any  test leads if the insulation is damaged or if metal is 

exposed. 

 
 
 

 

Safety Cont’d

 

 
Danger 

  Avoid electrical shock: do not touch the test leads, 

tips or the circuit being tested. 

 

  Do not try a voltage measurement with the test 

leads in the 20A or the mA terminal. 

 

  When testing for the presence of voltage or current, make sure the 

meter is functioning correctly.  Take a reading of a known voltage or 
current before accepting a zero reading. 

 

  Choose the proper range and function for the measurement.  Do not 

try voltage or current measurements that may exceed the ratings 
marked on the Function/Range switch or terminal. 

 

  When measuring current, connect the meter in series with the load. 

 

  Never connect more than one set of test leads to the meter. 

 

  Disconnect the live test lead before  disconnecting the common test 

lead. 

 

  The mA and the 20A  terminals are protected by fuses.  To avoid 

possible injury or damage,  use only on  circuits limited to  400mA  or 
20A for 30 seconds. 

 

 

 

 

 

 
 
 

 

 

 

 

Summary of Contents for DM-930

Page 1: ...1 0 DM 930 AUTOMOTIVE MULTIMETER INSTRUCTION MANUAL Auto Power Off 4 2...

Page 2: ...t tested must be protected by a 20A fuse or circuit breaker Do not use the meter if it has been damaged Do not use any test leads if the insulation is damaged or if metal is exposed Safety Cont d Dang...

Page 3: ...C AC DC20A 20A 20A DC AC 20 Amp measurement for 30 seconds maximum Getting Started This chapter will help you get started It describes the basic functions of the Meter Meter Basics 1 Digital LCD displ...

Page 4: ...DIS Hz ms CYL Button Press to this button to select STROKE 4 2DIS Hz ms CYL range V A Resistance manual Range Manual Ranging The meter turns on in the autoranging mode Press the Range button to go to...

Page 5: ...Pmin or Pmax indicator switches off Note If the Function switch position is changed after a calibration the Peak Hold calibration must be repeated for the new function selected MAX MIN 1 Press the MA...

Page 6: ...cation that has capacitors in the circuit be sure to turn the power OFF on the test circuit and discharge all capacitors Accurate measurement is not possible if external or residual voltage is present...

Page 7: ...re performing any work Select the Capacitance CAP function with the function dial and MODE button Insert Black lead in COM terminal Red lead in V RPM terminal CAUTION When checking in circuit capacita...

Page 8: ...nsure of the current draw IMPORTANT Turn OFF all power to the circuit or disconnect the circuit from the power source Connect The Red probe to the side of the circuit closest to the power source The B...

Page 9: ...in COM terminal Red lead in V RPM terminal Connect the Black test probe to ground Connect the Red test probe to the signal wire circuit The illustration for a mixture control solenoid is shown with th...

Page 10: ...ct black test probe to a good ground at the fuel injector or the negative vehicle battery post Connect red test probe to the fuel injector solenoid driver input on the jumper cable Start the engine A...

Page 11: ...w battery indication The is displayed when the battery voltage drops below the operating level Measurement rate 2 times per second nominal Auto power off Meter automatically shuts down after approx 30...

Page 12: ...Resistance Range Resolution Accuracy 400 0 0 1 1 2 of rdg 4 dgts 4 000k 1 1 0 of rdg 2 dgts 40 00k 10 1 2 of rdg 2 dgts 400 0k 100 4 000M 1k 40 00M 10k 2 0 of rdg 3 dgts Capacitance Range Resoluti on...

Page 13: ...t leads from the meter 2 Open the battery door by loosening the screw using a Phillips head screwdriver 3 Insert the battery into battery holder observing the correct polarity 4 Put the battery door b...

Page 14: ...still toggled ON Warranty This PDI product is warrantied to be free from defects in materials and workmanship for a period of two 2 years from the verified date of purchase During this warranty period...

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