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LaserLiner SoundTest-Master Bedienungsanleitung Seite 14

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13
Calibration and adjustment
The calibration can be checked by means of a sound pressure level
calibrator in accordance with IEC/EN 60942:2003ff. The calibrator
defines a target volume of 94 dB. The device should be checked in
the 80...130 dB setting and show 94 dB plus the tolerance range on
the display. If the displayed value deviates from the target volume,
you can adjust the sound level meter to the required 94 dB by means
of the calibration screw.
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Power pack operation
It is recommended to operate the device with a controlled
power pack (9 V, > = 500 mA DC, DC power plug 3.5 x 1.3 mm).
High quality control and filtering of the power pack is required
in order to rule out possible interference on the measurement
signal (ripple <= 100 mV).
15
Mounting on tripod
For certain measuring tasks it may be of advantage to secure the device on a tripod. To do so, screw the
device on to a tripod with a 1/4" connection. Undo the device by turning in anticlockwise direction.
Information on maintenance and care
Clean all components with a damp cloth and do not use cleaning agents, scouring agents and solvents.
Remove the battery(ies) before storing for longer periods. Store the device in a clean and dry place.
Calibration
The meter needs to be calibrated and tested on a regular basis to ensure it produces accurate
measurement results. We recommend carrying out calibration once a year. Contact your distributor
or the UMAREX-LASERLINER service department.
14
EN

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