OTT MF pro Manuel D'utilisation De Base page 16

1. Real time—Select this option to get real-time velocity and depth information. (A sensor with
depth capability is necessary to read depth). An example of a Real Time screen for sensors with
velocity only is shown in
shown in Figure 9. The format of the information and options shown depends on the type of
sensor used. In Real Time mode, the Quick Jump key toggles between digital and graphic views
of Real Time information. The velocity is updated in FPA filter mode according to fixed period
averaging time. In RC filter mode, the velocity is updated continuously on the screen every
250 ms.
Option Description
Capture Stores the depth and velocity information shown in memory. The information is saved until
power is cycled, the memory is saved to a non-volatile real-time file, or the user exits from real-
time mode.
Save Saves captured measurements in the volatile memory to a non-volatile real-time file. A
message will show if the number of files is greater than the maximum possible. Files are
stored in tab delimited (.tsv) format.
Done or OK Exits the real-time mode and returns to the Main Menu. If there is unsaved data in volatile
memory, a confirmation message asks the user to confirm the exit without saving the data.
Clear Clears captured measurements from the volatile memory buffer. The user can choose from
Clear Last, Clear All or Cancel options.
Setup Allows the user to modify the main filter parameters and enable and program the Maximum
Depth sensor positioning feature. The Maximum depth feature allows a user to enter system
parameters for depth measurement in Real Time mode. The user can choose to enter a
maximum depth value taken directly with a ruler measurement (manual), or taken indirectly
with the depth measurement (automatic). Both methods enable the Maximum Depth sensor
positioning feature.
In automatic mode setup, the user directly enters the distance from the bottom of the channel
to the bottom of the sensor mount (offset). The setup interface will continuously show the
current depth value returned by the sensor plus the offset. The meter stores this value as the
Maximum Depth when the OK button is pushed. In all other cases, the depth values shown do
not include the offset.
The Maximum depth feature requires a sensor with velocity plus depth.
Files or Shows a summary of each real-time file stored in non-volatile memory. Files can be
View individually viewed and deleted.
Figure 8 Real time screen
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Figure 8. Real time screens for sensors with both velocity and depth is