6
A/C
During sound measurement, press A/C button to select “A” or “C” frequency
weighting. With “A” weighting selected, the frequency response of the Meter is similar
to the response of the human ear.
“A” weighting is commonly used for envi ronmental or hearing conservation programs
‘C” Weighting is a much flatter response and is suitable for the sound level analysis of
machines, engines, etc.
Most noise measurements are performed using “A” Weighting and SLOW Response.
Press A/C button also could recall and clear data:
RECALL:
Press and hold this button, the LCD displays the last data stored and the index
number.
Press
button to recall additional stored reading.
Press
button to exit the RECALL mode
CLR:
Press and hold A/C button when turning on the Meter until the LCD displays CLR and
RECORD. All the data stored will be cleared.
LEVEL
Press to selection of Auto ranging, Manual ranging.
The Meter is default to auto ranging.
Press LEVEL button to switch to manual ranging. Press
button to toggle from
low to high range or from high to low range. Press and hold LEVEL button to exit the
manual ranging mode.
FAST/
SLOW
Press to select a FAST (125ms) or a LOW (1 second) response time. Select FAST to
capture noise peaks and noises that occur very quickly. Select the LOW response to
monitor a sound source that has a consistent noise level or to aver age quickly changing
levels. Select LOW response for most application.
Press and hold FAST/SLOW button to enable display backlight. Press and hold FAST/
SLOW button again to disable display backlight.
Press FAST/SLOW button to store data:
Press HOLD button to freeze data, the LCD displays HOLD and M symbol and the
data being stored.
Press FAST/SLOW to store the data, the symbol RECORD and the number of index
blink for 0.5 seconds.
The Meter will automatically exit HOLD mode.
The Meter can store up to 63 data.
MAX/
MIN
Press MAX/MIN to display the maxi mum or minimum reading. The display will
update only when the measured value exceeds the value presently in the display.
Press the MAX/MIN button and the MAX icon will display on the reading. The
reading displayed is the highest reading encountered since the MAX mode was entered.
MAX/
MIN
Press MAX/MIN button again. The MIN icon will appear on the display. The read ing
displayed is the lowest reading encountered since the MIN mode was entered.
Press the MAX/MIN button again to exit the MAX/MIN display mode.
Press and hold MAX/MIN button to disable or enable auto power off feature.
The Meter will automatically off after approximately 15 minutes of inactivity.
The icon display indicates that the auto power off feature is active.
