Casella CEL CEL-440 - Manual (Page 62)

Narrow Band Storage Capability:
999 runs, each with up to 9999 octaves or third octaves band
scans in each run up to a maximum of 16 000 octave results and
7 200 third octave results with all frequency bands measured.
No profiles are stored for narrow band.
Stored Parameters:
L, L mx , L eq per band simultaneously in narrow band mode with
storage of up to all 3 spectra if selected by user.
Also stores L, L mx , L eq for two broadband weightings Z and
either A or C.
Profile:
User set intervals of: 1, 5, 10, 15, 20, 30, 60 s, 1, 5, 10, 15, 20,
30 min, 1 hour.
Up to two profiles from: L mx , L mn , L eq , L I eq , L AV , L pk , L Tm3 ,
L Tm5 , L N .
Profile times must be less than or equal to the period times.
L
Tm3 not available for period times that are not integer multiples
of 3 seconds.
Digital Control:
From PC to change setup, perform in-house testing for service
and recall, and to control operation of the meter’s measurements.
5.3 Filter Scanning
The operation of the sequential measurement of filter bands in the
CEL-440 and CEL-480 may be effected in two ways.
For both methods, the starting band in the scan may be preset to
any available band in the instrument, similarly the final band to be
measured can also be preset. The only restriction is that the start band
must be lower in frequency than the final band.
The first method enables the user to select a fixed measurement
interval for all measured bands ranging from 5 seconds to 1 minute in 1
second increments.
Page 62 - CEL-440/480 Operators Handbook
Specification