Greenlee DM-70 User manual

999 3814.6 © 2000 Greenlee Textron IM 1489 12/00
DM-70
DIGITAL
MULTIMETER
MULTÍMETRO
DIGITAL
MULTIMÈTRE
NUMÉRIQUE
INSTRUCTION MANUAL
INSTRUCTION MANUAL
MANUAL DE INSTRUCCIONES
MANUEL D’INSTRUCTIONS
Read and understand all of the instructions and safety
information in this manual before operating or servicing this tool.
Lea y entienda todas las instrucciones y la información sobre
seguridad que aparecen en este manual, antes de manejar estas
herramientas o darles mantenimiento.
Lire attentivement et bien comprendre toutes les instructions et
les informations sur la sécurité de ce manuel avant d‘utiliser ou de
procéder à l‘entretien de cet outil.

2
Description
The Greenlee DM-70 Digital Multimeter is a hand-held testing device with the following
measurement capabilities: AC and DC voltage, DC current, and resistance. It also checks
diodes and verifies continuity.
Safety
Safety is essential in the use and maintenance of Greenlee tools and equipment. This
instruction manual and any markings on the tool provide information for avoiding hazards and
unsafe practices related to the use of this tool. Observe all of the safety information provided.
Purpose
This instruction manual is intended to familiarize all personnel with the safe operation and
maintenance procedures for the Greenlee DM-70 Digital Multimeter.
Keep this manual available to all personnel.
Replacement manuals are available upon request at no charge.
Greenlee and are registered trademarks of Greenlee Textron.
KEEP THIS MANUAL

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Important Safety Information
Read and understand this material before operating or servicing
this equipment. Failure to understand how to safely operate this
tool can result in an accident causing serious injury or death.
This symbol is used to call your attention to hazards or unsafe practices which could
result in an injury or property damage. The signal word, defined below, indicates the
severity of the hazard. The message after the signal word provides information for
preventing or avoiding the hazard.
SAFETY ALERT SYMBOL
Immediate hazards which, if not avoided, WILL result in severe injury or death.
Hazards which, if not avoided, COULD result in severe injury or death.
Hazards or unsafe practices which, if not avoided, MAY result in injury or property
damage.

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Important Safety Information
Electric shock and fire hazard:
•Do not expose this unit to rain or moisture.
•Do not use the unit if it is wet or damaged.
•Use test leads or accessories that are appropriate for the application. See the
category and voltage rating of the test lead or accessory.
•Inspect the test leads or accessory before use. They must be clean and dry, and the
insulation must be in good condition.
•Use this unit for the manufacturer’s intended purpose only, as described in this
manual. Any other use can impair the protection provided by the unit.
Failure to observe these warnings can result in severe injury or death.
Electric shock hazard:
Contact with live circuits can result in severe injury or death.
Electric shock hazard:
•Do not apply more than the rated voltage between any two input terminals, or
between any input terminal and earth ground.
•Do not contact the test lead tips or any uninsulated portion of the accessory.
Failure to observe these warnings can result in severe injury or death.

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Important Safety Information
•Do not attempt to repair this unit. It contains no user-serviceable parts.
•Do not expose the unit to extremes in temperature or high humidity.
See Specifications.
Failure to observe these precautions can result in injury and can damage the unit.
Do not change the measurement function while the test leads are connected to a
component or circuit.
Failure to observe this precaution can result in injury and can damage the unit.
•Do not operate with the case open.
•Before opening the case, remove the test leads from the circuit and shut off the unit.
Failure to observe these warnings can result in severe injury or death.
•Unless measuring voltage or current, shut off and lock out power. Make sure that
all capacitors are discharged. Voltage must not be present.
•Using this unit near equipment that generates electromagnetic interference can
result in unstable or inaccurate readings.

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Identification
1. Display 3-2/3–digit LCD (maximum 3200 counts)
2. Feature Buttons See explanations under Using the Features
3. Selector Selects a function or turns power off
4. COM Negative, common, or ground input terminal for all measurements
5. VΩµA Positive input terminal for all measurements
Symbols on the Unit
Warning—Read the instruction manual
Double insulation
1
2
3
4 5

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Using the Features
•Automatic Power-Off To extend battery life, the meter will shut itself off after approximately
10 minutes of inactivity. To restore power, press the RANGE button.
•RANGE Press once to enter the manual ranging mode. The icon will appear on the
display. Press repeatedly to step through the ranges. Press and hold to return to the
automatic ranging mode.
•HOLD Press momentarily to hold the present value on the display. Press again to exit
this mode.
Display Icons
6. Hold function is enabled
7. DC DC measurement is selected
8. AC AC measurement is selected
9. Diode
10. Continuity
11. Manual ranging is enabled
12. µMicro (10-6)
13. A Amps
14. m Milli (10-3)
15. V Volts
16. M Mega (106)
17. k Kilo (103)
18. ΩOhms
19. Overload (bar graph display)
20. IBar graph element
21. Low battery
22. –Polarity indicator
23. OL Overload (numeric display)
6 7 8 9 10 11 12
20 19
13
14, 15
16–18
22
23
21

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1. See the Settings Table. Set the selector to the proper setting, press RANGE
(if instructed to do so), and connect the test leads to the meter.
2. See Typical Measurements for illustrations of typical uses.
3. Test the unit on a known functioning circuit or component.
•If the unit does not function as expected on a known functioning circuit, replace the
batteries.
•If the unit still does not function as expected, send the unit to Greenlee for repair. See
the address shown under Warranty.
4. Take the reading from the circuit or component to be tested.
Settings Table
Operation
Electric shock hazard:
Contact with live circuits can result in severe injury or death.
*Tone indicates continuity. The threshold is approximately 15 Ω.
To measure set the selector this icon will connect and connect
this value …to this symbol …appear on the red the black
the display …lead to …lead to …
Continuity*
Current µA
(3200 µA max)
Diode VΩµA COM
and press RANGE once
Resistance ΩΩ
Voltage or V

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Typical Measurements
Voltage Measurement
Current Measurement

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Typical Measurements
Resistance
Measurement
Continuity Check
Diode Measurement
Reverse Bias
Forward Bias