General DMM30 User Manual Download Page 16

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GENERAL TOOLS & INSTRUMENTS

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New York, NY 10013-3567

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TOLL FREE (800) 697-8665

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www.generaltools.com

DMM30 User’s Manual

Specifications subject to change without notice

NOTICE - NOT RESPONSIBLE FOR TYPOGRAPHICAL ERRORS.

MAN# DMM30

1/28/15

General Tools & Instruments

GeneralToolsNYC

Summary of Contents for DMM30

Page 1: ...8 FUNCTION DIGITAL MULTIMETER WITH NCV DETECTION USER S MANUAL DMM30 Please read this manual carefully and thoroughly before using this product...

Page 2: ...ions 7 11 General Instructions 7 Holding Readings 7 Measuring AC or DC Voltage 7 8 Measuring DC Current 8 9 Measuring Resistance 9 Checking for Continuity 9 10 Checking the Integrity of a Diode 10 Che...

Page 3: ...eads A 9V battery is pre installed in a compartment in the back of the unit PRODUCT OVERVIEW Fig 1 shows the labels and positions of the controls LCD and physical structures of the DMM30 Fig 2 shows a...

Page 4: ...d insulation or exposed metal Check the test leads for continuity Replace damaged test leads before using the meter Verify the meter s operation by measuring a known voltage Do not use the meter if it...

Page 5: ...esistance continuity diodes or capacitance For all DC functions in both auto and manual ranging mode to avoid the risk of shock due to possible improper reading verify the presence of any AC voltages...

Page 6: ...n risk of electric Risk of danger Important shock Hazardous information Refer to the voltage manual Low battery indication when shown Earth ground on LCD Diode Continuity Beeper AC or DC Resistance CA...

Page 7: ...Phillips head screw OPERATING INSTRUCTIONS GENERAL INSTRUCTIONS All parameters are measured through the included test leads Unless you are measuring DC currents larger than 200 mA plug the red test l...

Page 8: ...A through the 10A jack for more than 10 seconds at a time or for more than 30 seconds every 15 minutes pause 1 minute after each measurement of such a large current 1 Remove power from the circuit to...

Page 9: ...unsure how much resistance you expect to encounter select the 200 position 2 Plug the black test lead into the front panel COM jack and the red test lead into the jack 3 Measure the resistance by touc...

Page 10: ...the diode to be tested and the black test lead to its cathode negative terminal as shown below 4 Read the diode s forward bias voltage drop on the display A silicon diode typically has a forward volt...

Page 11: ...t is carrying at least 110VACRMS The NCV detector works with the rotary function switch in any position SPECIFICATIONS Parameter or Feature Function Attribute Specification AC voltage Measurement rang...

Page 12: ...tage protection 250VDC ACRMS Fuse protection 250mA 250V fuse for jack 10A 250V fuse for 10A jack Sampling time 3X sec Display No of digits 3 1 2 Maximum count 2000 Low battery indication threshold 6 7...

Page 13: ...0V fuse Each fuse is located directly behind the jack it protects 7 Using another multimeter or a continuity checker verify that the suspected blown fuse produces a resistance reading consistent with...

Page 14: ...not apply to damages that General determines to be from an attempted repair by non authorized personnel or misuse alterations normal wear and tear or accidental damage The defective unit must be retur...

Page 15: ...ntact our Customer Service to obtain an RGA Return Goods Authorization number before forwarding the unit via prepaid freight to the attention of our Service Center at this address General Tools Instru...

Page 16: ...431 6499 TOLL FREE 800 697 8665 e mail sales generaltools com www generaltools com DMM30 User s Manual Specifications subject to change without notice NOTICE NOT RESPONSIBLE FOR TYPOGRAPHICAL ERRORS...