Greenlee SDMM-1 User manual

999 3264.4 © 1999 Greenlee Textron IM 1408 8/99
SDMM-1
DIGITAL MULTIMETER
MULTÍMETRO DIGITAL
MULTIMETRE
NUMERIQUE
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.

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Description
The Greenlee SDMM-1 is a hand-held digital multimeter intended to measure AC and DC
voltage and resistance and to check diodes and verify continuity.
Specialized functions and capabilities include:
• Autoranging or manual ranging
• Display Hold for operating convenience
• Stow-away leads for added safety
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 SDMM-1 digital multimeter.
Keep this manual available to all personnel.
Replacement manuals are available upon request at no charge.
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 hazard:
Contact with live circuits can result in severe injury or death.
Electric shock hazard:
• Do not apply more than the rated voltage between the two input terminals, or
between any input terminal and earth ground.
• Do not contact the test lead tips.
Failure to observe these warnings can result in severe injury or death.
Electric shock hazard:
• Do not use the unit if it is wet or damaged.
• Inspect the test leads before use. They must be clean and dry, and the insulation
must be in good condition.
Failure to observe these warnings can result in severe injury or death.
• 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.

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• 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.
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.
Important Safety Information

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Identification
1. Removable Test Probe Negative (–), common probe or ground
2. Fixed Test Probe Positive (+) probe
3. Display 3-3/4-digit LCD (3199 maximum display) and bar graph
4. Feature Buttons See explanations under Using the Features
5. Warning Light Illuminates when voltage exceeds 50 V
2
13
5
4

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Display Icons
6. Continuity Symbol
7. — Polarity Indicator
8. Diode Symbol
9. M Mega (106)
10. k Kilo (103)
11. ΩOhms
12. m Milli (10-3)
Symbols on the Unit
Read the instruction manual.
Double Insulation
910 11 12 13 14
15 16 17
6
7
8
18
19
20
13. V Volts Indicator
14. AC AC Voltage Indicator
15. DC DC Voltage Indicator
16. Range Hold function is enabled.
17. Data Hold function is enabled.
18. Low Battery
19. OL Overload Indicator (numeric)
20. Overload Indicator (graph)

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Opening and Closing the Unit
Do not apply force. Opening and closing the unit can be done without effort.
Applying force can damage the unit.
To Open
To Close

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Using the Features
• ON/OFF Press momentarily to toggle between power on and power off.
•RHPress 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.
•DHPress momentarily to hold the present value on the display. Press again to exit this
mode.
• AC/DC Press momentarily to toggle between AC and DC measurements.
•Ω/ V Press momentarily to toggle between voltage measurement or the continuity, diode
and resistance set of functions.
•/ / ΩPress momentarily to toggle between continuity, diode and resistance
functions.

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Operation
1. Press ON/OFF to turn on the unit. Select the proper function according to the Settings
Table.
2. See Typical Measurements for specific measurement instructions.
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
battery.
• If the unit still does not function as expected, send the unit to Greenlee for repair.
4. Take the reading from the circuit or component to be tested
Settings Table
*Tone sounds below threshold. See Specifications.
Diode Table
The fixed test probe is positive and the removable test probe is negative when checking
diodes.
To measure this … press … and the tester
will indicate …
Continuity Ω/V until Ωappears; press resistance reading*
/ /Ωuntil appears on display
Diode Ω/V until Ωappears; press reading or OL
/ /Ωuntil appears on display
Resistance Ω/V until Ωappears on display resistance reading
Voltage (AC) AC/DC until VAC appears on display voltage reading
Voltage (DC) AC/DC until mVDC appears on display voltage reading
Fixed Test Probe Removable Test Probe Result
Anode Cathode Diode voltage drop
Cathode Anode .OL