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Piccolo SLM User guide-Rev. 4.3
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PICCOLO STANDALONE OPERATION
CUSTOM ACTION: DBA/DBC SWITCH
As for other parameters, the dBA/dBC units can be changed trough the software. It is also possible to
switch between dBA and dBC units in standalone operation, but only if the custom action has previously
been set to “dBA/dBC”. This action is the the factory default.
To switch the units,
1. Press and hold the Lx/Leq Display button for 3 seconds
2. The meter will display the message “Unit” matched with a visual transition from the current units to the
new units.
3. After the process, a Manual measurement is automatically started (Avg should appear).
CUSTOM ACTION: CALIBRATION
The calibration of each Piccolo is done at the factory and the sensitivity is saved in the internal memory. It
is however a good practice to verify the sensitivity of the equipment to ensure proper result.
The calibration of the Piccolo unit can be done trough the software (refer to the Calibration Menu
section). It is also possible to calibration a unit in standalone operation, but only if the custom action has
previously been set to “Calibration”. Also, the standalone calibration only recalibrates the active frequency
weighting (A or C).
To proceed to a new sensitivity calibration,
1. Insert the Piccolo into the acoustical calibrator generating a 94 dB at 1 kHz. (Equipment not provided)
2. Press and hold the Lx/Leq Display button for 3 seconds
3. The meter will display a blinking “CAL” and the current level measured by the Piccolo.
4.
The Piccolo will then automatically adjust the sensitivity to obtain 94 dB and display “done” when the
process is completed (about 4 sec). If an error occurred during the process (for example, if no
calibration signal is detected), the display will show “Err” and the sensitivity value will not be up-date.
5. After the process The Piccolo will switch to the SPL display. If the calibrator is still in place, the level
should indicate 94 dB.
The Piccolo will go back to the standard Leq manual measurement mode after the process.