Calibration And Adjustment; Mounting On Tripod - LaserLiner SoundTest-Master Bedienungsanleitung

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Real time recording (SEND DATA)

It is possible to transfer the data to the PC in real time when conducting extensive measurements where

there is not sufficient space in the internal memory for the recorded data. Data storage takes place directly

at the PC. The measured data can also be displayed and observed directly on the PC monitor.

DC/AC output

The device is equipped with analogue signal outputs. The dB A or

dB C signal is output via the CD output for connection to a chart

recorder for instance. The unfiltered signal that is recorded directly

from the microphone is made available at the AC output for a

possible connection to an oscilloscope.

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.

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).

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.

Connect the device to the PC as described under Point 10 and

start the program. Press and hold the "SEND DATA" button

for 3 seconds to start data transfer. "SENDING" appears on the

display. All recorded data are now shown in real time on the PC.

Press the "SEND DATA" button again for 3 seconds to stop

data transfer.

3 sec

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