background image

 

 

 

 

 

4

 

 

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Automatic zero adjustment 

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Over range indicator (except 15 A function). Displays "OL" 
on LCD 

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Low battery indicator. Displays battery symbol 

 on LCD 

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Automatic power shut off (after 10 idle minutes) 

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Pollution Degree 2 

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Measuring circuit category II 

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Operating environment: 

Temperature - 32° to 104° F. (0° C to 40° C) 
Humidity - Less than 80% relative humidity (non-condensing) 
Altitude - up to 6562 ft (2000 meters) 

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Storage environment: 

Temperature - 4° to 140° F (- 20° to 60° C) 
Humidity - Less than 90% relative humidity (non-condensing) 

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Power Supply: One 9-volt battery 

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Fuse: 0.500A/250V 5X20 mm (Radio Shack, GMA/270 
series; #270-1047) fuse 

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Dimensions:  

Height - 6.81 in. (173 mm) 
Width - 6.57 in. (167 mm) (includes test lead clips) 
Depth - 1.69 in. (43 mm) 

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Weight (including battery): approximately 9.1 oz (260 g) 

ELECTRICAL SPECIFICATIONS 

DCV 

Range Resolution 

Accuracy  Overload 

Protection 

400mV 100

μ

V 250V 

DC/AC 

RMS 

4V 1mV 

40V 10mV 

400V 

600V 

1V 

±(0.8% of 
r5 
digits) 

600V DC/AC RMS 

Input Impedance:

 10M

Ω

 for all ranges. 

 

Summary of Contents for ADMM50

Page 1: ......

Page 2: ...ION 2 SAFETY PRECAUTIONS WARNINGS 2 SPECIFICATIONS 3 CONTROLS AND INDICATORS 8 TESTING PROCEDURES 10 AUXILIARY FUNCTIONS 17 BATTERY AND FUSE REPLACEMENT 18 MAINTENANCE 19 LIMITED ONE YEAR WARRANTY 22...

Page 3: ...n electric shock or personal injury Pay close attention to WARNINGS stamped on the front and rear of the tester s case These warnings as well as all warnings and precautions used through out this manu...

Page 4: ...ny energized conductors with your hands Be certain test leads are dry and clean Do not hold the tester when taking measurements Place the tester on a clean insulating surface prior to taking any measu...

Page 5: ...000 meters Storage environment Temperature 4 to 140 F 20 to 60 C Humidity Less than 90 relative humidity non condensing Power Supply One 9 volt battery Fuse 0 500A 250V 5X20 mm Radio Shack GMA 270 ser...

Page 6: ...c ranges are specified from 1 to 100 of range Below 5 of range add 6 counts in the range 400mV an additional 2mV Because inputs below 1 of range are not specified it is normal for this and other true...

Page 7: ...2 0 of reading 5 digits 0 5A 250V fast fuse Input Voltage Drop 0 2V Frequency response 50 400 Hz 1 All ac ranges are specified from 1 to 100 of range Below 5 of range add 6 counts Because inputs below...

Page 8: ...CY Range Resolution Accuracy Overload Protection 9 999Hz 2MHz 0 001Hz 0 1 of reading 5 digits 250V DC or AC RMS Sensitivity 100kHz 2V RMS 100kHZ 5V RMS DUTY CYCLE PULSE WIDTH DWELL Function Range Accu...

Page 9: ...rom 0 to 600 volts 10M impedance 3 Press SEL button see item 19 to select desired function Resistance Function Measures resistance Auto ranging from 0 to 40M 40 000 000 Continuity Function Tests for c...

Page 10: ...Coil On Plug ignition systems One range 0 to 10 000 rpm 15 RPM Tach Function Measures RPM One range 0 to 10 000 rpm 16 Dwell Angle Function Measures dwell angle of breaker points 17 OFF Function Turn...

Page 11: ...exceed the maximum value of the selected range If the tester is used near high noise Radio Frequency RF generating equipment spark plug wires ignition coils or alternator the display may become unsta...

Page 12: ...may result in electric shock instrument damage and or damage to equipment under test MAKE SURE equipment is completely de energized before taking any resistance measurements 1 Plug the RED test lead...

Page 13: ...side of the diode being tested and the BLACK test lead onto the other side 5 Read the results on the display 6 Reverse the test leads and again read the results on the display Compare the two reading...

Page 14: ...the tester plug the BLACK test lead into the COM jack 2 Set the tester s Function Range Selector Switch to the ms position see Controls and Indicators Item 5 3 Place the RED test lead onto the signal...

Page 15: ...mage to the tester DO NOT try to take measurements on circuits that have more than 15 amps DO NOT take more than 10 seconds to take the reading A waiting period of AT LEAST 15 MINUTES is necessary bet...

Page 16: ...the circuit before removing the test leads and before reconnecting any disconnected wires or devices NOTE If the reading obtained is a negative number reverse the test leads J CLAMP CURRENT MEASUREME...

Page 17: ...the tester s Function Range Selector Switch to the or position as appropriate see Controls and Indicators Items 14 and 15 4 Press the CYL button as necessary until the correct number of cylinders for...

Page 18: ...LE MEASUREMENT 1 Plug the RED test lead into the jack of the tester plug the BLACK test lead into the COM jack 2 Place the RED test lead to the BREAKER POINTS or terminal of the ignition coil and the...

Page 19: ...the MAX MIN button to place the tester in MAX MIN mode The MAX icon will be visible on the display Perform the desired test the maximum reading achieved during the test will be recorded and saved in t...

Page 20: ...1047 fuse NOTE Use a 0 500A 250V 5x20mm type fuse ONLY Bussmann GMA Type Radio Shack 270 1047 or similar Using an incorrect fuse may result in serious injury and or damage to the unit 3 Reassemble th...

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Page 23: ...ed or repaired by anyone other than the Manufacturer s Service Center The Manufacturer under no circumstances shall be liable for any consequential damages for breach of any written warranty of this u...

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