Decibel Measurement; Battery And Fuse Replacement; Warranty; Correct Disposal Of This Product - GB Intsruments GMT-319 Manual Del Propietário

GMT-319 manual 7.08.qxp
switch terminals to determine which two
terminals control that ON position.

8. Decibel Measurement

The decibel feature of this multimeter is for
transistor gain measurement in electronic cir-
cuits and should not be confused with audio
decibels. This function is used primarily by elec-
tronics technicians to measure the power gain
in transistors, and is rarely encountered in home
project applications.
1) Fully seat the test leads in the correct input
jacks, (-) black lead, (+) red lead.
2) Set the function/range switch to any one of
the AC voltage ranges and read the decibel
measurement on the bottom (red) scale of
the faceplate. Based on the AC voltage range
you selected, you will need to compute the
actual measurement by using the decibel
conversion chart located at the bottom right
of the faceplate.
Important: For absolute decibel measurements,
circuit impedance must be at least 600 ohms. -0-
decibels = 1 milliwatt in a 600 ohm impedance
(equivalent to 0.775 volts across 600 ohms).

9. Battery and Fuse Replacement

1) Remove the screw in the back cover of the
meter and carefully separate the back cover
from the front.
2) Note the polarity of the batteries when
removing them from their compartment and
replace.
3) Use F500mAH, 250V replacement fuses, GB
model GF-0306
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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 repair
or replacement; no warranty of
merchantability or fitness for a particular
purpose. Product is warrantied to be free
of defects in materials and workmanship
for the normal life of the product. In no
event shall Gardner Bender be liable for
incidental or consequential damage.

11. Correct Disposal of this product

This marking indicates that this
product should not be disposed with
other household wastes throughout
the EU. To prevent possible harm to
the environment or human health
from uncontrolled waste disposal, recycle it
responsibly to promote the sustainable reuse
of material resources. To return your used
device, please use the return and collection
systems or contact the retailer where the
product was purchased. They can take this
product for environmental safe recycling.
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