Casella CEL CEL-440 - Manual (Page 37)

4. OPERATION
4.1 Measurement
With the instrument configured, calibrated, measurement parameters
specified and timers set as described in the preceding chapters perform
measurements as described in this chapter.
Alternatively, this chapter may also be used as a tutorial to give
an idea of how the instrument functions by accepting the currently
elected measurement parameters and the last saved calibration.
4.1.1 Starting Measurement
Operation Press Display Shows Comments
1. Switch the
instrument
ON
Start up messages are
displayed that include:
Instrument Type,
Firmware Version, Etc.,
Finally, Calibration check
mode is displayed showing
current sound level and
details of the last calibration.
2. If required perform a Calibration Check (described in Chapter 2) or go directly to step 3
3. Move to
Measure-
ment, i.e.
accept the
Last
Calibration
A Stop screen will be
shown, where
indicates
stop mode and the
instrument operates with
the last used measurement
setup (or the setup just
selected according to the
previous chapters).
4. When the
Measure-
ment
screen
looks like
this
The last setup used was
broadband.
When broadband
measurement is required,
follow the instructions given
in Section 4.1.2.
When narrow band
measurement with B and C
models is required, change
the bandwidth to
narrowband as described in
Section 3.1, then proceed to
Section 4.1.3.
m-01
dB
Ø9Jan98 12.22
Last Cal.
L
ZF
AFmx
30 100
dB
AF
Aeq
AFmn Zpk
L L
L
L
L
m-02
CEL-440/480 Operators Handbook - Page 37
Operation