Castle Group Limited
Salter Road, Scarborough, North Yorkshire, YO11 3UZ, UK
Tel: +44(0)1723 584250, Fax: +44(0)1723 583728
Starting up your SONUS Dosemeter
To turn on your instrument press and hold the Power On/Off key for approximately one
second. (Your meter will display the start-up screen and initialise any saved settings.)
To Calibrate using a Castle Calibrator (GA601 or GA607) attach the calibrator to the
microphone, press the MENU key and use the
arrow keys as required until CAL is on
the screen. Press OK twice and the instrument will calibrate to the level of the calibrator
(default 94dB), displaying COMPLETE when finished.
Setting the Time-history interval
Press MENU then press the
arrow key to find SETUP. Press OK to show INTERVAL on
screen, then press OK again. Using the
arrow key, select the desired time-history size
and press OK. Display will show DONE. Press Cto return to measuring screen.
Taking a Measurement
To start recording, press the STOP/RECORD Key so the display briefly shows REC
MODE. You can review the parameters using
arrow keys during recording
When ready to stop, press again, so the display shows SAVE YES. If you don’t want to
save, press Ckey. To save, press OK.
The following will then be displayed: -
Exposure Time entry uses the following 24 hour format (hh:mm:ss) and the adjustable figure
flashes, this always starts with the HOUR figure.
Locking the Keypad
To lock the keypad, press the padlock key . This will immediately lock the keypad, and the
display will show the battery indicator screen, i.e. BAT: |||| |||| |||| ||||. To unlock the instrument, press
C, OK, i in succession, and the display will return to the LAF screen.
Reviewing measurements
Press the MENU key then use the
arrow keys until screen displays ‘LOGS’ (If no logs are
available this option is not shown).
Press OK and the instrument will display the currently saved logs in date order.
Scroll through the available dates using the
arrow keys.
Press Cto exit without selection or OK to confirm the selection, the instrument will then
display the currently saved logs by time recorded.
Scroll through the available times using the
arrow keys.
Press Cto exit without selection and return to the date list or OK to confirm the selection,
the instrument will then view the saved cumulative information for the log selected.
Scroll through the available data using the
arrow keys.
Press Cto exit and return to the parameter display screen when required.