Sperry instruments DSA-540A Operating Instructions
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Sperry instruments DSA-540A Operating Instructions

Ac/dc digisnap snap-around clamp meter
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2/04
OPERATING INSTRUCTIONS
MODEL DSA-540A
AC/DC DIGISNAP
SNAP-AROUND
Trigger
COM Terminal
A.W. SPERRY INSTRUMENTS INC.
The Professional's Choice
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA
FORM #322
Transformer Jaws
Data Hold and
O AOJ Switch
Function
Selector
Switch
Display
V/Ω Terminal
®
TestEquipmentDepot.com
1. FEATURES
• Safety design conforming to the following
provisions of IEC61010.
• Overvoltage category III 300V AC, pollution
degree 2.
• Overvoltage category II 600V AC/DC, pollution
degree 2.
• Protected throughout by double or reinforced
insulation, indicated the International Electrical
Symbol "
" on the bottom of the instrument.
• Data hold switch for easy reading in dimly light
or hard-to-read locations.
• "Sleep" feature to extend battery life.
• Beeper permits easy continuity check.
• Provides a dynamic range of 4,000 counts full
scale.
• Uses shrouded transformer jaws to further
improve safety.
2. SAFETY WARNINGS
• This instrument has been designed and tested
according to IEC Publication 61010: Safety
Requirements for Electronic Measuring
Apparatus. This instruction manual contains
warnings and safety rules which must be
observed by the user to ensure safe operation
of the instrument and retain it in safe condition.
Therefore, read through these operating
instructions before using the instrument.
WARNING
!
• Read through and understand instructions
contained in this manual before using the
instrument.
• Save and keep the manual handy to enable
quick reference whenever necessary.
• Be sure to use the instrument only in its
intended applications and to follow
measurement procedures described in the
manual.
• Be sure to understand and follow all safety
instructions contained in the manual. Failure to
follow the above instructions may cause injury,
instrument damage and/or damage to
equipment under test.
The symbol
indicated on the instrument means
!
that the user must refer to related parts in the
manual for safe operation of the instrument. Be
sure to carefully read the instructions following
each symbol in this manual.
DANGER is reserved for conditions and
!
actions that are likely to cause serious or fatal
injury.

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Summary of Contents for Sperry instruments DSA-540A

  • Page 1 Be sure to carefully read the instructions following each symbol in this manual. DANGER is reserved for conditions and A.W. SPERRY INSTRUMENTS INC. actions that are likely to cause serious or fatal injury. The Professional’s Choice ®...

  • Page 2: Specifications

    WARNING is reserved for conditions and • Be sure to set the function selector switch to actions that can cause serious or fatal injury. the “OFF” position after use. When the instru CAUTION is reserved for conditions and ment will not be in use for a long period of time, actions that can cause minor injury or place it in storage after removing the battery.

  • Page 3: Preparation For Measurement

    • Temperature and Humidity for Guranteed NOTE Accuracy: The sleep feature automatically turns the 23±5°C, relative humidity up to 85% without instrument off in a certain period of time after the condensation last switch operation. Therefore, the display may • Operating Temperature and Humidity: be blank with the function selector switch set to a 0~40°C, relative humidity up to 85% without position other than “OFF”.

  • Page 4: Voltage Measurement

    instrument damage and/or damage to 7. RESISTANCE MEASUREMENT equipment under test. DANGER Fig. 3 Fig. 2 • Always make sure that the circuit under test is powered off. • Do not make measurement with the battery compartment cover removed. (1) Set the function selector switch to the Ω/ position Incorrect Correct...

  • Page 5: Lifetime Limited Warranty

    LIFETIME LIMITED WARRANTY To exit the data hold mode, press the data hold The attention to detail of this fine snap-around switch again. instrument is further enhanced by the application of A.W. Sperry’s unmatched service and concern for detail and reliability. These A.W. Sperry’s snap- arounds are internationally accepted by craftsmen and servicemen for their unmatched performance.

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