Radio Shack Sound Level Meter Manual do Proprietário

Owner’s ManualPlease read before using this equipment.Sound Level Meter

10ControlsOUTPUTThe phono-type OUTPUT jack lets youconnect the meter to recording or othermeasurement equipment. For example,you might use an audio pa

11ControlsThe effect of brief sound peaks is mini-mized in the SLOW position.WEIGHTING Set WEIGHTING to weight the sound mea-surement for a particular

12ControlsMICROPHONEThe meter’s built-in microphone worksbest when you point it directly at a soundsource.TRIPOD ADAPTERYou can mount the meter on a c

13ControlsCAL (CALIBRATION)Your meter has been accurately calibrat-ed and normally will not require further ad-justment. If adjustment is necessary, w

14ControlsFollow these steps to select the desiredresponse, weighting, and range.1. Set RESPONSE to FAST if the soundsource you want to measure consis

15ControlsWhile taking measurements, minimize theeffect of your body’s presence. When thesound is coming mainly from one direc-tion, the level reading

16ControlsCHECKING NOISE LEVELSThis chart, gathered from Federal, State,and local agencies, shows standards foracceptable noise levels.Permissible noi

17ControlsTo use your meter to check noise levels,set WEIGHTING to A and RESPONSE toSLOW. Take measurements at severalpoints in the test area, with th

18ControlsDepending on the speaker placement,standing waves might also develop in theroom, giving your system a “peaky”, ec-centric response.To determ

19ControlsNote: When checking the frequency re-sponse, if WEIGHTING is set to C, themeter’s frequency response is flat from 32–10,000 Hz (± 3 dB). Abo

2 ContentsIntroduction ... 3Specifications ... 5Installing a Battery ...

06A03 AO0172AAA133-4050 Printed in ChinaLimited Ninety-Day WarrantyThis product is warranted by RadioShack against manufacturingdefects in material an

3Introduction IntroductionYour RadioShack Sound Level Meter isan extremely versatile device for measur-ing sound intensity in just about an acous-tic

4IntroductionBuilt-in Battery Condition Indicator —lets you check the battery condition.Phono-type Output Jack — for connec-tion to home theater or te

5Specifications SpecificationsRange:Accuracy ... ± 2 dB @ 114 dBStandard ... 0 dB = 0.0002 µbar

6SpecificationsBattery ... One 9VBattery Check ... Tests “good” from 7.0to 10.5VExpected Ba

7Installing a Battery Installing a BatteryYour meter requires one 9V battery (notsupplied) for power. For the best perfor-mance and longest life, we

8Installing a Battery3. Close the cover.To test the battery, set RANGE to BATT. Ifthe meter shows a reading in the redBATT TEST region, the battery i

9Controls ControlsRANGEThe RANGE selector lets you select one ofseven sound level ranges, each spanning16 dB. The RANGE numbers refer to thecenter po