Casella CEL CEL-450 - Manual (Page 42)

Operation Press Display Shows Comments
3. Select
Manual
calibration
This is the manual calibration
check screen. It shows the
current sound level and
details of the last calibration.
If the Calibration screen
shows a “Scale ... ” line
instead of “Manual”, the
last calibration was
performed via line input (see
Section 5.5).
4. Return the
highlight to
L ZF
or
This allows the displayed
level to be changed
manually.
5. Switch the
Calibrator
ON
This is the level determined
by the sound level meter.
The Calibration levels for the
CEL Class 1 and Class 2
microphones and for Free
Field and Random response
are shown in Table 1.
6. When the
level
shown is
incorrect
for the
current
microphone
and
response
This enables the quick edit
function.
7. Adjust the
display to
show the
correct
calibration
level for
the
microphone
and
response
and
More than one key press
may be required to give a
visible change in level.
Page 42 - CEL-450/490 Operators Handbook
Acoustic Calibration Check