CASELLA CEL CEL-450 Handbook page 68

Specification
Data Storage:
Cumulative data set of overall values for all user specified
parameters from all available bandwidths for all runs, plus time
history data from up to 4 user specified profiles from the runs.
Measurement Times:
Fixed measurement durations:
1, 5, 10, 15, 20, 30 minutes,
1, 2, 4, 8, 12, 24 hours.
Fixed integration times for profiles:
10, 20, 50, 100, 250, 500 milliseconds,
1, 5, 10, 15, 20, 30 seconds,
1, 5, 10, 15, 20, 30 minutes.
Amplitude weighting (Q):
Selection of Q = 3 plus one other from Q = 4, 5, 6 or none.
Parameters measured:
See Table 2.
Broadband Data Storage:
Manual storage of up to 999 complete sets of results.
Frequency Data Storage:
The memory can save results relating to any measurement
mode (broadband, octave or thirdoctave).
See Table 2 for parameters measured.
Data Recall:
Stored results can be recalled to the display for inspection, even
while a measurement is in progress.
Data can be downloaded according to RS 232 standards (or USB
with adaptor) to a PC for further manipulation and report
preparation under the control of dB23 application software.
Page 68 - CEL-450/490 Operators Handbook