Sequoia LISST-100X, Руководство пользователя

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LISST-100X User’s Guide 77
Stop Condition The LISST-SOP software can configure the Base program
with one of six Stop conditions: Depth, Time. External
Mechanical Switch, External Digital Input, Fixed number of
samples, and Maximum Memory or Low Battery. When
storing data in the Fixed Sample Rate mode the Stop
conditions are checked after each averaged sample has
been saved. When storing data in the Burst mode the Stop
conditions are only checked after a full Burst has been
completed. The Start and Stop conditions have no effect on
the Real-time sampling mode. The details of each condition
are described below.
Depth Stop : The built-in depth sensor of the LISST-100X is used to
check the current depth to determine if it is less than the
desired Stop depth. The averaged depth from the last
sample acquired is used as the current depth. If the depth is
less than the threshold the sampling will stop. If the depth is
not less than the threshold the program will continue
sampling as per the configuration. If the Start Condition is a
Depth Start the program will wait 30 seconds and then
return to looking for the Depth Start Conditions. The delay is
to keep the instrument from starting and stopping too quickly
as the instrument is moving up and down. If the Start
Condition is Depth Start the Base program will return to
checking for the Start Conditions. For all other Start
Conditions the when the current depth is less than the
threshold the program will stop and return to the L100X:>
prompt.
Time Stop:
The program will check the current time after each sample
or burst and compare it to the Start Time. If the Start Time
is equal to or later than the current time the program will
stop and return to the L100X:> prompt.
External
Mechanical
Switch Stop: After each sample or burst the status of the Switch lever is
checked. If the switch lever is in the off or “0” position
sampling will stop. If the Start Condition is a Switch Start
the program will return to checking the start condition. For all
other Start conditions the program will stop and return to the
L100X:> prompt.
External Digital
Input Stop: The status of the Dig 1 input is checked after each sample
or burst. If the voltage at the input is less than 0.7 volts the
sampling will stop. If the Start Condition is a Digital Input
Start the program will return to checking the start condition.
For all other Start conditions the program will stop and return
to the L100X:> prompt.
Fixed Number of
Samples: The program will acquire a fixed number of samples before
stopping. For the Fixed Sample Rate mode the number of
samples saved is checked after each sample is saved. In