YSI WaterLog Series, Руководство пользователя

Страница: 32 / 174

Advanced Scanning Options
The Advanced Scanning Options allows more complex scan rates, offsets, and timings to be used
for both Inputs and Outputs and only apply to the Task being edited. If an advanced scanning
option is being used, the Scan Rate Edit button on the Input Properties screen will be disabled.
The scan rate displayed on the Edit Task page will also be displayed as brown, rather than black.
Scan Rate: Defines the interval at which the Task will acquire a new measurement or retrieve a
new value. This value is based off a 24-hour format with 00:00:00 indicating 24 hours. The
format is HH:MM:SS.
Offset: Defines the offset (positive or negative) for the Task’s specified scan rate. This value is
based off a 24-hour format with 00:00:00 indicating zero seconds. The format is HH:MM:SS.
The Offset must be less than the Scan Rate.
A Scan Offset can be set either before or after the given rate to offset the measuring of data. For
example, an Offset of negative 30 seconds (-00:00:30) in the above scenario would cause the
Batt Task to take measurements at 00:14:30, 00:29:30, 00:44:30, etc.
Scan Offsets allow a common Scan Rate to persist despite unconventional scanning times. If the
Scan Rate was set to 00:14:30 in the above example (with an Offset of 00:00:00), the Task would
scan at 00:14:30, 00:29:00, 00:43:30, etc as the interval would increase each time by 00:14:30
rather than an even 00:15:00. All scan rates, regardless of interval, start each day at 00:00:00.
Custom Task Schedule: Allows a scanning schedule to be defined for individual Tasks. The
Task Schedule determines when a Task should be making measurements and running Outputs on
a daily basis. Each day begins at midnight (00:00:00) and runs until 23:59:59. The default
Action of Enable Task Scanning at Time 00:00:00 refers to starting the Task measurements at the
beginning of the day. All Tasks (unless an Offset is applied) will have their first measurement
occur at midnight. The Add, Edit, and Remove buttons can be used to alter the Task Schedule.
An example Task Schedule is detailed below.
4-6 Managing Tasks
System 5000
TM