Operation
LCD Display with Analog Bargraph
Sound levels are displayed both digitally and in bargraph format. When the ON/OFF key is pressed to
power the meter, the LCD will display all characters and then it will count down to zero. After countdown,
the meter dipslays sound pressure levels (SPL) in units of dB. Point the microphone toward the source of
the sound being measured, and read the measurement on the LCD.
Auto and Manual Ranging
The default mode of operation is Auto Range. To manually select a range, press the RANGE key (‘MANU’
will appear on the LCD). Press the RANGE key until the desired range is displayed. Note that the two-digit
number to the left of the bargraph changes to reflect the new range.
Tripod Mount
A threaded insert on the rear of the meter permits attachment to a tripod stand for increased stability and
accuracy (eliminates hand noise and minimizes the effects of sound reflected from the user's body).
Weighting A / C
Press the Weighting key to select A or C weighting. The LCD will reflect which weighting mode is currently
selected. Use ‘A’ weighting to have the meter respond as the human ear would with regard to frequency
response (the human ear boosts and cuts amplitude over the frequency spectrum therefore it is not ‘flat’
