Warning: the Firing step must be a multiple of the acquisition step
And the operator must enter again the time interval. This procedure ends only whenever a valid bottle
time step is entered. After the bottle time step is correctly entered, the probe automatically shuts down
by itself and configures the first data acquisition cycle time. Bottle sampling interval evaluation starts
once the first acquisition in function of time is performed by the probe.
Note
The probe warm-up time-out must be increased from the standard 5 seconds to the more appropriate 30 seconds.
This quite long time-out is needed to cover the home positioning procedure taken by the Rosette once it awakes. In
fact, the CTD must wait the ROSETTE home positioning procedure before carrying out the bottle firing procedure.
E.2 BOTTLE SAMPLING IN FUNCTION OF PRESSURE
Two different methods can be selected by the operator to close the bottles once the probe is performing
an unattended acquisition cycle in function of pressure step. Bottles can be closed using during the
downcast or during the upcast. In both cases, bottles are closed when the probe detect that the
configured bottle pressure step is overpassed.
UPCAST The bottle firing start when during the downcast, the probe overpasses
the configured maximum reverse depth and the difference between the
maximum downcast pressure and the pressure during the upcast is
greater than the configured bottle sampling step.
DOWNCAST The bottle firing start immediately whenever the bottle pressure step is
overpassed. Moreover if the “Bottom bottle closure” is enabled all the
bottles not already closed will be automatically closed by the bottom
bottle closing procedure.
When a bottle is closed, a complete data set is acquired and stored. Stored data also reports the number
of the bottle closed. Therefore, at the end of the data acquisition and bottle sampling, two different casts
are stored in memory: the first one describing the profile data and the second one describing the
acquisition done during the bottle sampling. The following Rosette set-up message is shown by the
probe once the unattended acquisition in function of the pressure interval is invoked.
ROSETTE
Number of bottle positions: 12
Number of bottles to fire: 12
Bottle step: 1
First bottle to fire: 1
Reverse depth value: 1500.00
Bottle firing depth step: 100.01
Bottle firing time step: 01:00:00
Bottle firing depth profile: 1
Bottle firing method: DEPTH STEP
Do you want to fire bottles? Y(es, N(o
If the operator answers <NO>, the bottle will not be sampled. If the operator answers <YES>, the set-up
continues as follows:
Close on UPCAST ? Y(es, N(o
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