Amprobe SM-10 Sound-Level-Meters - Manual (Page 7)

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hold the instrument comfortably in hand or fix on tripod and point the 3.
microphone at the suspected noise source, the sound pressure level will
be displayed.
MAX/MIN
The MAx Min feature reads and updates the display to show the maximum
or minimum average value measured after you press the MAx Min button.
pressing the MAx Min button for less than 1 second will put the meter into
a mode of displaying the maximum, minimum, average, or actual readings.
each time the button is pressed, the meter will alternate between MAx
and Min. press the MAx Min button for more than 2 seconds to disable this
feature.
HoLd
freezes the reading present on the LCd at the moment the button is pressed.
To use this button feature set up the meter for the type of measurement and
range desired before pressing the button.
backlight
press the button you enable the display backlight to easy readings in dark
environments. press more than 1 second to disable backlight, which however
it automatically off after 15 seconds.
Record (SM-20-A only)
Refer to Cd-RoM for download Suite
TM instructions .
To transfer the data from the instrument to the pC the following procedure
must be followed:
Switch on the instrument 1.
Connect the serial output of the instrument to the serial output of the pC 2.
through the serial cable
press the ReC button on the SM-20-A.
3.
install the software and start it – Close the introduction window 4.
press f2 and follow the commands. 5.
Refer to software help file for further instructions. 6.
Calibration Procedures
Using a standard Acoustic Calibrator (SM-CAL1) (94dB, 1 khz Sine wave)
Set meter for dBA and fAST. 1.
insert the Microphone nozzle carefully into the insertion hole of the 2.
calibrator.
press A/C button then press the hoLd button, hold the 2 buttons at
3.
the same time more than 1 second. LCd will be blinking to confirm
calibration.