APart IMPMET [7/12] Using the impmet

Instruction manualIMPMET

Using the IMPMET

Getting started: Turn the function switch to the OFF position.

Remove the test leads if present and unscrew the bottom battery

cover by removing the four screws. Insert 6 fresh AA alkaline

batteries. Mind the polarity! Put the cover back in place and

tighten the four screws using a light touch. Remove the batteries

and store them in a safe place when the unit is not used for more

than 30 days, or when the batteries are exhausted. When the low

battery symbol appears in the display, the batteries need to be

replaced. Discard exhausted batteries according to your local waste

management regulations.

Performing a measurement and calculating system power in 100

volt speaker lines:

• Makesurethesystemundertestisdisconnectedfromthe

power ampliﬁer.

• Connectthetestleadstothespeaker/speakerline.Setthe

function switch to the expected range. Press the test button.

The display will show the measured impedance. When the

symbol “I” appears in the display, the value is out of range.

Switch to a higher range and perform a new measurement.

• Theunitcanmeasureimpedanceupto2000ohms.Thisis

equivalent to 5 watts in 100 volt. The formula for determining

thepowerin100voltsystems:P=Z.I²=V²/ZwhereZisthe

impedance value measured. For 100 volt systems, the power =

(100x100)/Z=10000/Z