INSTRUCTION MANUAL
MANUAL DE INSTRUCCIONES
MANUEL D’INSTRUCTIONS
DM-810A • DM-820A
DM-830A • DML-430A
Digital Multimeters
Multímetros digitales
Multimètres
numériques
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.
Register this product at www.greenlee.com / Registre este producto en www.greenlee.com
Enregistrez votre produit en ligne, www.greenlee.com
52047799 REV 1
© 2009 Greenlee Textron Inc.
10/09
Description
The Greenlee DM-810A, DM-820A, DM-830A, and DML-430A Digital Multimeters are hand-held
testing devices with the following measurement capabilities: AC and DC voltage, AC and DC current,
frequency, resistance, capacitance, and duty cycle of logic level signals. They also check diodes and
verify continuity. All meters feature true RMS AC measurements, a relative zero mode, data hold mode,
and an intelligent automatic power off. An optional optically isolated computer interface with software
facilitates the recording of readings from the meter to a computer.
Other specialized capabilities and functions common to all meters include:
• Dual display shows two measurements, such as AC voltage and frequency, at the same time.
• Backlighted LCD for reading in dim conditions.
• Beep-Jack™ audible warning alerts the user with a beep and an error message on the LCD if the
test lead is plugged into the
mA/µA
or
A
input terminal while the selector switch is not in the
mA/µA
or
A
position.
• Bar graph display, which responds more quickly than the numeric display — useful for detecting
faulty contacts, potentiometer clicks, and signal spikes.
The DM-820A, DM-830A, and DML-430A multimeters have the following additional capabilities:
temperature (K-type thermocouples only); conductance; a crest function, which captures voltage or
current signal peaks; and a recording function, which stores the maximum, minimum, and difference
(maximum-minimum) input readings. The DM-820A and DM-830A record function can also calculate
the average reading. These two models also have non-contact and single-probe voltage detection.
The DM-830A and the DML-430A multimeters have an AutoCheck™ function for automatic selection
of AC voltage, DC voltage, and resistance with low input impedance to mask “ghost” voltages. Both
multimeters feature a T1-T2 function, which can measure and display two temperatures and calculate
the difference. They also feature AC + DC true RMS measurement capability. The DM-830A has a dBm
function with selectable reference impedances. The DML-430A has the capability to store data.
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 of This Manual
This instruction manual is intended to familiarize all personnel with the safe operation and maintenance
procedures for the Greenlee DM-810A, DM-820A, DM-830A, and DML-430A Digital Multimeters.
Keep this manual available to all personnel. Replacement manuals are available upon request at no
charge at www.greenlee.com.
Do not discard this product or throw away!
For recycling information, go to www.greenlee.com.
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DM-810A • DM-820A • DM-830A • DML-430A
Important Safety Information
SAFETY ALERT SYMBOL
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.
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.
Read
and
understand
this material before operating or servicing this
equipment. Failure to understand how to safely operate this tool could result in
an accident causing serious injury or death.
Electric shock hazard:
Contact with live circuits could result in severe injury or death.
All specifications are nominal and may change as design improvements occur. Greenlee Textron Inc. shall not be liable
for damages resulting from misapplication or misuse of its products.
® Registered: The color green for electrical test instruments is a registered trademark of Greenlee Textron Inc.
AutoCheck and Beep-Jack are trademarks of BTC.
Microsoft and Windows are registered trademarks of Microsoft Corporation.
KEEP THIS MANUAL
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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. Refer to 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 could 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 could result in severe injury or death.
Electric shock hazard:
• 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 could result in severe injury or death.
Electric shock hazard:
The fuses are an integral part of the overvoltage protection. When fuse replacement is necessary,
refer to “Specifications” for the correct type, size, and capacity. Using any other type of fuse will void
the overvoltage protection rating of the unit.
Failure to observe this warning could result in severe injury or death.
4
DM-810A • DM-820A • DM-830A • DML-430A
Important Safety Information
Electric shock hazard:
• Unless measuring voltage, current, or frequency, shut off and lock out power. Make sure that all
capacitors are discharged. Voltage must not be present.
• Set the selector and connect the test leads so that they correspond to the intended measurement.
Incorrect settings or connections can result in a blown fuse.
• Using this unit near equipment that generates electromagnetic interference can result in unstable
or inaccurate readings.
Failure to observe these warnings could result in severe injury or death.
Electric shock hazard:
Do not change the measurement function while the test leads are connected to a component or
circuit.
Failure to observe this precaution may result in injury and can damage the unit.
Electric shock hazard:
Do not use the tester to measure voltages in circuits that could be damaged or activated by the
AutoCheck™ mode’s low input impedance (approximately 3.0 kΩ and 150 pF).
Failure to observe this precaution may result in injury and can damage the unit.
Electric shock hazard:
• 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. Refer to “Specifications.”
Failure to observe these precautions may result in injury and can damage the unit.
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