DIGITAL SOUND LEVEL METER fonometro USER MANUAL
read this first With this meter you have bought a very fine, versatile and precise measuring tool that allows you to measure sound pressure levels in a wide range. Please be aware that this measuring instrument, however precise, is not to be used for purposes other than indicating a sound presure level. No legal proof can be aquired with this instrument nor can the manufacturer or distributor of this instrument be made responsible for any claims originating from using this tool as a measuring instrument.
general As it says in the name, this is a "sound level meter" that is, it will indicate the sound level as it is perceived by the human ear. Therefore the measured sound is filtered using a curve that mimes the sensivity of the human ear. The International Electrotechnical Commission (IEC) has defined several weighting schemes that are layed down in a standard called ANSI S1.1-1994 The curve used to match the human ear is called A-curve. This curve is used in the sound level meter by default.
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functions On the digital sound level meter there are the following controls: 1) on/off switch. Turn on the measuring device by pressing this button. Pressing it again will turn off the device 2) max button. will freeze the display reading to the maximum level, measured since this button was pressed. The reading will be updated when the indicated value is surpassed. 3) up and down arrow buttons. will increase or decrease the measuring range in 6 steps where each step covers a range of 50dB.
use First make sure there are charged batteries in the sound level meter. There are 6 batteries included in the packing. When inserting the batteries, please pay attention to the polarity. The position of each battery is indicated on the bottom of the battery compartment. Switch on the sound level meter. The device should now show figures on it's display. On that display you can read the sound level in dB ( deci-Bell ).
setup When switchin on the device, it's clock will probably not run at the correct time. To adjust this clock please proceed as follows: Switch off the unit. While holding pressed the MAX button, switch the unit on again by pressing the on/off button. Now only the clock reading will appear on the display while the indication of the seconds will be blinking. Use the yellow arrowbuttons to increase or decreas the seconds reading.
91004 DAP is a registered brandname of Highlite International BV Vestastraat 2 6468 EX KERKRADE the Netherlands http://www.highlite.
