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Operating Instructions

1. Turn the meter on or off by pressing the Power Button.

2. Press the Time Weighting Button to select the desired Response

Time. If the sound source consists of short bursts, set the response

toFAST(125ms).Tomeasureaveragesoundlevel,selectSLOW(1s).

3. Press the Frequency Weighting Button to select the Frequency.

Select "A" Weighting for a general noise sound level, or "C"

Weighting for measuring high level noise. "C" Weighting is a standard

weighting of the audible frequencies commonly used for the

measurement of Peak Sound Pressure Level. If the "C" Weighted

level is much higher than the "A" Weighted level, then there will be a

largeamountoflow-frequencynoise.

4. Press the Hi/Lo button to select the appropriate range. If the noise

environment under test is between 30 to 100dB, use the 'Lo' range. If

the noise environment under test is between 65 and 130dB, use the

'Hi'range.Foranoiseenvironmentundertestthatisbetween65and

100dB,eitherrangecanbeused.Ifthedisplayashesthe"OVER"

icon, press the range button to adjust the range.

5. Holdtheinstrumentcomfortablyinonehand(awayfromyourbody)

orpositionitonatripodforlong-termmonitoring.Pointthe

microphone in the direction of the noise to take a measurement.

MAX Hold

Press the MAX/HOLDbuttontodisplaytheMaximumsoundlevelvalues

recorded during the measurement process. While in this mode, the meter

will only refresh the reading when a higher measurement than the one

currently displayed is detected. Press the MAX/HOLDbuttonagaintoexit

and resume normal operation.

Data Hold

To freeze a displayed reading during the measurement process, press and

hold the MAX/HOLDbuttonuntilboththeMAXandHOLDiconsappear

on the display. To resume normal operation, press and hold the MAX/

HOLDbuttonuntiltheMAXandHOLDiconsdisappear.

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Reed Instruments R8050 User Manual

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