Casella CEL CEL-360S - Manual (Page 8)

Fit the CEL-4726 Coupler
supplied with the calibrator (CEL-110/1 or
110/2 ) into the calibrator cavity, making
sure it is firmly in contact with the
shoulder in the cavity. (To aid removal,
the coupler flange does not fit close
against the calibrator housing).
Fit the microphone into the
coupler cavity, again ensuring that it
makes contact with the shoulder in the
coupler cavity.
Then follow these instructions.
Operation Press Display Shows Comments
1. Switch the
instrument
ON Start Up messages show:
Instrument Type,
Serial Number (when set),
Print (when printer cable
connected),
Firmware Version,
finishing with the Last Used
Operating Mode.
2. Change
Operating
Mode
re-
peatedly
To select OPTION, to enable
Acoustic Calibration, it shows
current SPL.
3. Enable
Level
Change
and are now enabled.
The display shows current
sound level.
4. Change
Indicated
Level or Press or .
Indicated level rises (falls)
0.05 dB for each key press.
Adjust to correct level for
CEL-320/360 microphones at
standard temperature and
pressure: 114.0 dB.
5. Set
Calibration
Level The 114.0 dB calibration level
is now set, and will be stored
in the microphone assembly.
6. If the
calibration is
to be aborted The calibration level is
NOT SAVED and the
instrument continues to use
the last saved calibration.
DATA
MENU
OPTION
OPTION
OPTION
OPTION
OPTION
Calibrator
980057
1/4"
Microphone
'O' Ring
Shoulder
Microphone
Coupler
Page 8 - CEL-320/360 Getting Started