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or current than the set range of the 
multimeter will allow.

4)

Do not touch the metal

probes of the test leads when making a
measurement.

5) Replace worn test leads. Do not use test

leads with broken or tattered insulation. Only
test leads meeting ETL, cETL, CAT II 
300V IA    can be used in this multimeter.

6) Discharge a capacitor before measuring it.

7) Remove the test leads from the circuit being

measured as soon as the test is completed.

8)

Do not measure voltage

when the function/range switch is set on
the resistance (ohms) or the current (mA)
settings. Never measure current when the
meter is set on the resistance range.
Never measure AC voltage when the
meter is set on DC voltage or DCmA.
Setting the meter on the incorrect function
may burn out some of the internal circuitry
and may pose a safety hazard.

3. Operating Suggestions

1) Set the function/range switch to the proper

position before making a measurement.
When the voltage or current is not known, it
MUST be determined that the capacity of
the selected range will handle the amount of
voltage or current in the circuit (see #3
under 

For Your Safety). Always start with the

highest range in the function. If the 
reading falls within the range of a lower 
setting, reset the function/range switch to

!

WARNING

!

WARNING

6

5

the appropriate setting for greater accuracy.

2) Avoid placing the meter in areas where 

vibration, dust or dirt are present. Do not
store the meter in excessively hot, humid
or damp places. This meter is a sensitive 
measuring device and should be treated
with the same regard as other electrical
and electronic devices.

3) Using the meter in areas with high magnetic

fields can result in inaccurate readings. For
greatest accuracy, lay the meter flat on a
non-metallic surface.

4) When the meter is not in use, keep the

function/range switch in the OFF position.
This keeps the needle indicator from
deflecting or ”bouncing” excessively.

5) When disconnecting the test leads from

the unit, always grasp the leads where the
input jacks meet the meter housing. Never
pull the leads out of the jacks by the 
insulated wire or transport the meter using
the test leads as a carrying strap.

6) Never immerse the meter in water or 

solvents. To clean the housing use a damp
cloth with a minimal amount of mild soap.

7) If the resistance (ohms) function of the

meter is not going to be used for a week or
more, remove the internal battery to avoid
potential leaks that may damage the unit.

3.1 Preliminary Adjustments

Fully seat the test leads in the correct input
jacks. If necessary, using a small flat tip 
screwdriver, slowly turn the mechanical zero

HSP5 3-09 manual.qxp  5/8/09  9:57 AM  Page 6

Содержание GMT-312

Страница 1: ...ual Read this owners manual thoroughly before use and save HSP5 HSP5 3 09 manual qxp 5 8 09 9 57 AM Page 1 99 Washington Street Melrose MA 02176 Phone 781 665 1400 Toll Free 1 800 517 8431 Visit us at...

Страница 2: ...or the homeowner hobbyist and professional needing to make electrical and electronic equipment measurements 1 1 Meter Functions Needle Analog Scale Mechanical Zero Adjust Screw Zero Ohms Adjust ment I...

Страница 3: ...m max Decibels 20dB to 56dB on AC voltage ranges Accuracy DC voltage mA 4 full scale of range AC voltage 5 full scale of range Resistance 4 arc of scale length Sensitivity 2000 ohms per volt DC and AC...

Страница 4: ...et the function range switch to WARNING WARNING 6 5 the appropriate setting for greater accuracy 2 Avoid placing the meter in areas where vibration dust or dirt are present Do not store the meter in e...

Страница 5: ...n range switch to the ohms Rx1K position Short the test leads together and the needle indicator should deflect to the right side of the scale Keep the test leads shorted together while simultaneously...

Страница 6: ...1 Common DC Milliamperage Measurements It is important to point out that milliamps can also be expressed as thousandths of an Ampere therefore 150 milliamps is 150 thousandths of one Amp The 150mA fun...

Страница 7: ...nce and continuity testing POWER MUST BE OFF 1 Fully seat the test leads in the input jacks black lead red lead 2 Set the function range switch to the Rx1K position resistance indicated multiplied by...

Страница 8: ...fuse is good the needle indicator will move to 0 ohms If not replace the fuse On plug type fuses touch the the test leads on the bottom contact and the other on the threaded metal contact see fig 6 7...

Страница 9: ...uses GB model GF 0306 4 Carefully replace the back cover and tighten the screw Do not overtighten as this may strip the threads in the meter housing 10 Warranty 1 YEAR WARRANTY limited solely to repai...

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