Decibel Measurement; Battery And Fuse Replacement - Kopp GMT-19A Mode D'emploi

Decibel Measurement

1) Fully seat the test leads in the correct input jacks.
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 ran-
ge 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).

Battery and Fuse Replacement

1) Remove the screws in the battery/fuse cover and carefully
separate from the front.
2) Note the polarity of the batteries when removing them from
their compartments and replace.
3) Use 2,0 Amp/250 Volt replacement fuses.
4) Carefully replace the battery/fuse cover and tighten the
screws. Do not overtighten the screws as this may strip the
threads in the tester housing.
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