Teledyne T101 Operation Manual page 140

Operating Instructions
REPORT PERIODS IN PROGRESS WHEN INSTRUMENT IS POWERED OFF
136
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 instrument's 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 COMM 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 instrument's 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.
If the instrument is powered off in the middle of a REPORT PERIOD, the samples
accumulated so far during that period are lost. Once the instrument is turned back on, the
DAS restarts taking samples and temporarily them in volatile memory as part of the
REPORT PERIOD currently active at the time of restart. At the end of this REPORT
PERIOD only the sample readings taken since the instrument was turned back on will be
included in any AVG, MIN or MAX calculation. Also, the STORE NUM. SAMPLES
feature will report the number of sample readings taken since the instrument was
restarted.
Teledyne ML – T101 Operation Manual