4 field accuracy check (acoustic calibration) – Casella CEL CEL-368 User Manual
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displays the current status of the data stores on a MEMORY USE
screen. This allows the user to see if there is space for the next run, or
whether the contents of a store must first be cleared to make room as
described in Section 1.6. Then the user is offered the choice of recali-
brating (i.e performing a field accuracy check) or continuing with the ex-
isting calibration settings. If the battery level is too low for reliable
operation, a warning is displayed.
1.4
Field Accuracy Check (Acoustic Calibration)
Either: Press
to use the existing calibration settings and proceed
directly to the SETUP menu (Section 1.5).
Or: Press
to perform a field accuracy check (acoustic calibration).
Acoustic calibration of the CEL-268 will normally be performed with a
CEL-284/2 Acoustic Calibrator (IEC 942 Class 1L), while the CEL-368
will use a CEL-282 Acoustic Calibrator IEC 942 Class 2L).
With the CEL-268 and CEL-284/2, carefully fit the calibrator over the
end of the microphone, making sure the microphone is correctly seated
against the shoulder in the calibrator cavity.
EXIT
STOP
CAL
Page 4 - CEL-268/368 Operator's Handbook