AEMC instruments 2153.61, Руководство пользователя

Страница: 17 / 36

Data Logger Model DL913 & DL914 17
3.2.3.2 Aggregation Period
When recording data in normal recording mode (see § 4.3), the instrument
performs measurement aggregation. The instrument samples data at a fixed rate
of once per 200 ms and aggregates the samples every second to represent trend
data. In normal recording mode, these 1 s values are aggregated based on a
user-defined period that is set in Configuration mode . In extended recording
mode, the selected period determines the storage interval for the 1 s values.
1. In Configuration mode , use the Up ▲ or Down ▼ button to display the
Aggregatio n Period (AGG PER) configuration screen.
2. Press to cycle through the available options.
The options are 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, and 60 min.
The aggregation period affects the timing of recorded measurements.
For example, if a recording begins at 12:00 and ends at 1:00 with a 10-minute
aggregation period, the recording will have 6 aggregated measurements. Each
10 minute aggregated measurement reflects the average of the instrument’s
measurements during that period.
Aggregation will only begin and end at clock times evenly divisible by the
aggregation period. For instance, if an hour recording begins at 12:06 and ends
at 1:06 with a 10 minute aggregation period, the first aggregation will begin at
12:10 and end at 12:20. Aggregation will be performed every 10 minutes with the
final aggregation ending at 1:00. Although the recording will continue until 1:06,
no aggregation will be performed for the final 6 minutes.
3.2.3.3 Recording Mode
The Recording mode screen determines whether a recording will run in normal
recording mode or extended recording mode.