The STATUS button is used to display the status of the instrument.
Press
STATUS BAT 80%
Repeatedly pressing the
STATUS
button will scroll through the parameters
listed
below, depending on the instrument type.
INSTRUMENT STATUS
All
BAT.80%
Percentage battery capacity remaining
ALL
dBA SLOW
Indicates the current frequency and time weighting
GA213/215
VER2.0
Indicates the firmware version number
ALL
RUNNING
Indicates the instrument is running
ALL
PAUSED
Indicates when the instrument is in pause mode (only
displayed if instrument is in pause mode)
ALL
90/3
Indicates the current criterion and exchange level
GA256
www.
castlegroup.co.
uk
Scrolling web-site address
ALL
12
The STATUS menu is therefore circular and can be easily scrolled through by
repeated pressing of the
STATUS
button. Press the
DISPLAY
button at any time
to return to normal operation.
This format is repeated for the other functional buttons on your instrument.
The calibrators recommended for use are the Castle GA601/607 calibrators,
which supply 94dB/ 104dB (relative to 20µPa pressure) at a frequency of 1kHz.
Turn the instrument on by pressing the
POWER
button.
Press
STATUS
to check the battery condition. Replace the battery if the
indication is low.
Press
MENU CAL <OK
Press
OK
and the instrument will now display the previous calibration level
e.g. >94.0. The calibration will be performed at the selected level
e.g.94.0dB but may be changed in 0.1 dB steps to match the calibrator output
by repeated pressing of the
UP/DOWN
arrow buttons or in 1dB steps by
repeated pressing of the
STATUS/ PLAY
keys. Ensure the calibrator is
attached firmly to the microphone. Ensure that the calibrator is set to the
chosen level.
Press
OK
and the instrument will calibrate to the level of the calibrator. The
display will show
SETTLING
while calibrating to the chosen level. When calibrated
the display will show
COMPLETE.
Press
OK
and the display will return to LP for
the GA213/215 and DOSE for the GA256.
If the input level is not /- 3dB of the chosen reference level then the
display will show CAL.FAIL. Check to make sure the calibrator is switched on and
emitting the correct level before proceeding as indicated above.
The instrument is now ready to take measurements.
CALIBRATION
All
5
Summary of Contents for GA213
Page 1: ...Notes ...
