Amprobe DM78C User Manual Download

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Symbols

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Battery

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Caution! Refer to the
explanation in this Manual

�

Caution! Risk of electric shock

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Earth (ground)

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Double insulation or Reinforced
insulation

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DC – Direct Current

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AC – Alternating Current

�

Audible tone

Underwriters laboratories inc.
[note: Canadian and US.]

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Complies with European
Directives

Do not dispose of this product
as unsorted municipal waste

WARNINgS AND PRECAUtIoNS

This instrument is En600- certified for
installation Category ii (600 V) and Category
iii (300 V). it is recommended for use with
local level power distribution, appliances,

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Summary of Contents for DM78C

Page 1: ... DM78C Digital Pocket Multimeter Pocket Size Meter with Protective Folding Cover Users Manual Bedienungshandbuch Mode d emploi Manuale d Uso Manual de uso Användarhandbok ...

Page 3: ... test leads with the meter Nonwarranty repair or replacement charges should be remitted in the form of a check a money order credit card with expiration date or a purchase order made payable to Amprobe Test Tools In Warranty Repairs and Replacement All Countries Please read the warranty statement and check your battery before requesting repair During the warranty period any defective test tool can...

Page 4: ... Selector switch Manual Range select 34 segment bargraph 3 digit LCD Data Hold Function select ...

Page 5: ...and Precautions 5 Unpacking and Inspection 6 Operation 7 AC Voltage Measurement 8 DC Voltage Measurement 8 Resistance Measurement 8 Diode Test 9 Continuity Test 9 Maintenance 10 Trouble Shooting 10 Cleaning and Storage 10 Battery Replacement 11 Specifications 11 ...

Page 6: ...C Alternating Current Audible tone Underwriters Laboratories Inc Note Canadian and US Complies with European Directives Do not dispose of this product as unsorted municipal waste Warnings and Precautions This instrument is EN61010 1 certified for Installation Category II 600 V and Category III 300 V It is recommended for use with local level power distribution appliances ...

Page 7: ...ise extreme caution when measuring voltage 20 V servicing CRT equipment Inspect DMM test leads and accessories before every use Do not use any damaged part Never ground yourself when taking measurements Do not touch exposed circuit elements or probe tips Do not operate instrument in an explosive atmosphere Unpacking and Inspection Your shipping carton should include 1 DM78C Digital pocket meter 1 ...

Page 8: ... Button to turn on H displayed and off the function Last reading is held on the display Press H button again to release and display present readings Selector Switch When the Selector Switch is in the Ω position press the Function Select Button for resistance Ω continuity test Ω and or diode test When the Selector Switch is in VOLT position press the Function Select Button to select AC voltage or D...

Page 9: ...y DC Voltage Measurement Warning For safety do not attempt to measure voltages greater than 600 VDC Set function switch to VOLT If AC appears in display press Function Button to select DC Connect black test lead to negative side of circuit being measured and red lead to positive side Read value on display Resistance Measurement Warning Before taking any in circuit resistance measure ments remove p...

Page 10: ... to Ω Press Function Button until appears in display Connect red test lead to anode and black test lead to cathode of the diode A good diode has a forward voltage drop of about 0 6 V An open or reverse biased diode will read OL Continuity Test Set the Selector Switch to Ω Press Function Button until Ω appears in display Connect test leads to the circuit Beeper sounds when resistance is 35 Ω The di...

Page 11: ...ut terminal has been subjected to high voltage transients caused by lightning or switching surges in the system the series fusible input resistors will open like fuses and the voltmeter will read approximately 85 of the actual value and cause the resistance range to not work The meter voltage reading approximately 15 low will let the user know that the meter has been damaged and the circuit under ...

Page 12: ...de off battery cover note polarity and change batteries Fig 6 Replace battery cover and screw Specifications General Specifications Display 3 digits LCD max reading 3400 Range selection Autoranging and manual range lock Overrange indication OL Polarity indication is displayed in implied Battery warning displayed when 1 25 V 0 1 V Sampling rate 2 sec display 20 sec bargraph Environment Indoor opera...

Page 13: ...MC This product complies with requirements of the following European Community Directives 89 336 EEC Electromagnetic Compatibility and 73 23 EEC Low Voltage as amended by 93 68 EEC CE Marking However electrical noise or intense electromagnetic fields in the vicinity of the equipment may disturb the measurement circuit Measuring instruments will also respond to unwanted signals that may be present ...

Page 14: ...ts exc 3 4 V rng 1 0 rdg 2 dgts Input impedance 340 mV rng 100 MΩ 3 4 V rng 10 MΩ all other 9 1 MΩ AC Voltage 50 60 Hz Ranges 3 4 34 340 600 V Resolution 1 mV in 3 4 V range Accuracy 4 0 rdg 5 dgts Input impedance 3 4 V rng 10 MΩ all others 9 1 MΩ Resistance Ranges 340 Ω 3 4 34 340 kΩ 3 4 34 MΩ Resolution 100 mΩ in 340 Ω rg Accuracy 340 Ω 3 4 34 340 kΩ rgs 2 0 rdg 4 dgts 3 4 MΩ rg 3 0 rdg 4 dgts ...

Page 15: ...e 0 45 Vdc typical 1 2 Vdc on 340 Ω rng Diode Test Range 3 4 V Accuracy 3 0 rdg 3 dgts Test current 0 6 mA Vf 0 6 V Continuity Check Range 340 Ω Indication at approx R 35 Ω Test Current 0 7 mA Specifications subject to change without notice ...

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