Casella CEL CEL-63X - Manual (Page 23)

CEL-63x Environmental & Occupational Noise Meter
23 Casella CEL
To select the Periodic data capture mode, set the Data Sets Mode control to
Periodic, and then select the Periodic Interval. The Periodic Interval is the
time from the start of one period to the start of the next period. You can set the
Periodic Interval to one of the following:
1, 2, 5, 10, 15, 20, 30 or 60 minutes
2, 4, 6, 8, 12 or 24 hours
Synchronise time
The Synchronise Time option synchronises both the periodic and the profile
times to the actual time. For example, if a periodic time is 1 hour and a run
starts at 09:18 with this option enabled, then the first period finishes at 10:00.
The second and all subsequent periods start on the whole hour.
The profile measurements are similarly synchronised to the period interval.
If the Synchronise Time option is disabled, then in this example the first
period continues to 10:18; the second period continues to 11:18, and so on.
You can also synchronise runs by using the timers, by starting and ending runs
on whole time period intervals. This synchronises both the periodic and the
profile measurements.