Casella CEL CEL-62X - Manual (Page 7)

3. OPERATION
A. SWITCH ON the CEL-62X INSTRUMENT (Refer to Figure 3)
Press the red power key to switch the instrument on (see Figure 1). The instrument
software screens have been designed with colour coded top and bottom bars to
enable the user to know at a glance which part of the firmware (operating system) is
currently being accessed.
Colour coding is as follows:
RED – Stop screens. These screens are displayed when the instrument has
completed initialisation after power-up, as well as prior to taking a measurement run.
BLUE – Setting screens. These screens are used to set up the instrument correctly
and includes settings such as date and time, language and backlight.
LIGHT BLUE – Memory Results screens. This is where the results from
measurement runs are viewed.
GREEN – Run screens. These screens show a measurement run is in progress.
Measured values are stored in the Memory Results.
YELLOW – Calibration screen. This screen is automatically displayed upon
application of a 1kHz Acoustic Calibrator. This is where the instrument is calibrated
prior to a run.
This is a precision instrument and should be calibrated before use to ensure
accurate measurements.
Also care should be taken that the operator does not unduly affect the sound field.
Ideally the instrument should be mounted on a sturdy tripod with the microphone
perpendicular to the source of the sound to be measured – the operator should be as
far behind the instrument as possible. If the instrument is to be hand held, then the
arm of the operator should be stretched out as far as possible to minimise reflections
from the operator’s body. Refer to Appendix B for the affects of the instrument on the
sound field.
CEL- 62XA – When the instrument is powered up, the initialisation screen will be
displayed first, followed by the Graph screen in the STOP mode (red bars). Press the
MENU Key (A) to access the MENU screen.
CEL- 62XB or CEL-62XC – When the instrument is powered up, the initialisation
screen will be displayed first, followed by the Octave (or 1/3 Octave on C models)
screen in the STOP mode (red bars). Press VIEW to see the Graph screen. Press
the MENU Key (A) to access the MENU screen.
The instrument is ready to make measurement immediately after the initialisation
screen has been displayed (approximately 10 seconds after switch ON).
Casella CEL Limited 7