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Operating Instructions Teledyne API Model T360/T360M Operation Manual
88
4.7.2.6. SAMPLE PERIOD AND REPORT PERIOD
The DAS defines two principal time periods by which sample readings are taken
and permanently recorded: Sample Period and Report Period.
SAMPLE PERIOD: Determines how often DAS temporarily records a
sample reading of the parameter in volatile memory. The
SAMPLE PERIOD
is set to one minute by default and generally cannot be accessed from the
standard DAS front panel menu, but is available via the instruments
communication ports by using APICOM or the analyzer’s standard serial data
protocol.
SAMPLE PERIOD
is only used when the DAS parameter’s sample mode is
set for
AVG, MIN or MAX.
REPORT PERIOD: Sets how often the sample readings stored in volatile
memory are processed, (e.g. average, minimum or maximum are calculated)
and the results stored permanently in the instruments Disk-on-Module as well
as transmitted via the analyzer’s communication ports. The
REPORT
PERIOD
may be set from the front panel.
If the
INST sample mode is selected the instrument stores and reports an
instantaneous reading of the selected parameter at the end of the chosen
REPORT PERIOD
In AVG, MIN or MAX sample modes, the settings for the SAMPLE PERIOD
and the REPORT PERIOD determine the number of data points used each time
the average, minimum or maximum is calculated, stored and reported to the com
ports. The actual sample readings are not stored past the end of the of the chosen
REPORT PERIOD.
Also, the SAMPLE PERIOD and REPORT PERIOD intervals are
synchronized to the beginning and end of the appropriate interval of the
instruments internal clock.
If SAMPLE PERIOD were set for one minute the first reading would occur at
the beginning of the next full minute according to the instrument’s internal
clock.
If the
REPORT PERIOD were set for of one hour the first report activity
would occur at the beginning of the next full hour according to the
instrument’s internal clock.
EXAMPLE: Given the above settings, if DAS were activated at 7:57:35 the
first sample would occur at 7:58 and the first report would be calculated at
8:00 consisting of data points for 7:58, 7:59 and 8:00.
During the next hour (from 8:01 to 9:00) the instrument will take a sample
reading every minute and include 60 sample readings.
When the STORE NUM SAMPLES feature is turned on, the instrument will
also store how many sample readings were used for the AVG, MIN or MAX
calculation but not the readings themselves.
07272B DCN6552