Sequoia LISST-HOLO, Руководство пользователя

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42 LISST-
HOLO User’s Guide
NOTE: It is possible to set the LISST-HOLO time to local time if a Time Offset is
entered on the Tools page. See section 6.6 for details.
The Delay Start will start after the specified delay. The delay must be an integer
number and can be specified as Minutes or Hours. In this example the LISST-
HOLO will start sampling 1 minute after the magnetic switch has been turned to
‘1’ (On) position.
The Depth Start will wait until the depth is greater than the specified value
before starting. In this example the LISST-HOLO will start sampling once the
depth exceeds 100 m and the magnetic switch is in the 1 position.
The External 1 and External 2 will wait for the voltage on the selected External
input located in the Auxiliary 6-pin connector to be greater than 2.4V and the
magnetic switch is in the 1 position.
The Magnetic switch option will start sampling when the switch is in turned to
the 1 position.
NOTE: ALL PROGRAMS MUST BE STARTED BY TURNING THE
MAGNETIC SWITCH TO THE 1 POSITION.
The sampling rates and modes also need to be selected. There are two
modes:

Fixed Rate Mode and

Burst Mode.
The Fixed rate mode will take one hologram at the specified interval.
Holograms can be taken at a frequency of up to 0.2 Hz (5 second interval).
The Burst Mode can be used to take a burst of holograms at a fixed time
interval between the start of each burst. The maximum sample rate is 0.2 Hz (5
second interval). If more than 20 holograms are captured within a burst, there
will be a slight gap in the data every for every 20 holograms, as the file system
cannot write the holograms to the memory as fast as they are taken. The Burst
Interval will automatically be recomputed to take this delay into account if more
than 20 holograms are captured within a burst.
The Stop Conditions also have multiple options: Date/Time, Fixed Duration,
Greater than or less than Depth, External Signal 1 or 2, Magnetic switch, or
fixed number of Samples.
The Date/Time Stop is used to stop collection at a particular time and date. The
date and time can be GMT or a local time if a time offset has been entered on
the Tools page (see section 6.6).
The Stop after setting will stop the sampling after the specified amount of time
from the start of data collection.
The > Depth value will stop when the depth is deeper than the specified depth.
The < Depth value will stop when the depth is shallower than the specified
depth.
The External 1 signal and External 2 signal setting will stop collection when the
selected signal is less than 0.8 volts.
The Magnetic Switch option will cause sampling to stop when the switch is in
the 0 position