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7
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.
REED Instruments
1-877-849-2127 | [email protected] | www.reedinstruments.com
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