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Decibel (dB) Measurements
The decibel scale measures the milliwatt power dissipation on a
600Ω load by measuring the voltage across the load. An AC
voltage of 0.775Vrms across 600Ω is equal to 1mW or “0” dB.
1.
Insert the black test lead into the COM input and the red
test lead into the VmAΩ input.
2.
Set the function switch to the desired AC voltage range and
read the decibel measurement on the bottom (red) scale.
3.
Use the decibel conversion chart located on the meter to
calculate the measurement for the AC voltage range.
Maintenance
WARNING: To avoid electrical shock, turn meter off, remove test leads, and
disconnect meter from any circuit before opening the case.
Battery Replacement
1.
Turn meter off and disconnect test leads from the meter and circuit under test.
2.
Remove the (1) Phillips head screw on the back of the meter.
3.
Open battery compartment, replace (1) 1.5V ‘AA’ battery observing correct
polarity. Re-assemble the meter before use.
Safety: Never dispose of batteries in a fire. If the meter is not to be used for 60 days
or more, remove the battery and store separately.
Never dispose of used batteries or rechargeable batteries in household
waste. As consumers, users are legally required to take used batteries to
appropriate collection sites, the retail store where the batteries were
purchased, or wherever batteries are sold.
Disposal: Do not dispose of this instrument in household waste. The user is
obligated to take end-of-life devices to a designated collection point for the
disposal of electrical and electronic equipment.
Fuse Replacement
1.
Turn the meter off and remove the test leads from the meter.
2.
Remove the Phillips head screw from the back of the meter and lift off cover.
3.
Replace the fuse with one of the same type and rating. Re-assemble the meter.
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