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Drivers Manual

Deso 25 (With Annotation) - 01


Driver for decoding depth sensor messages (D# and BC-message) from Atlas Deso 15 / 20/ 25 echosounders.
The driver will decode the depth reading (in meters), as well as the bottom condition (as quality indicator), if present.
The D#-message contains depth readings for transducer A or B, corresponding to channel 1 or 2.

Driver Information

Driver Deso 25 (With Annotation)  Interface Type Serial Driver Class Type Terminated
UTC Driver (question)  No Input / Output Input and Output Executable DrvAnnotate.exe DESO25 
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Driver can also send annotation messages (Fix Marks, SOL / EOL Info, Fix Event Info) to the echosounder.
Driver with user-interface, so settings can be changed online, by clicking on the system button on the task bar.

The format of the annotation output string can be selected online, under Settings - Annotation.
By default, this is the same format as for decoding data.

There is also a possibility to send a direct annotation string.
All user selections are saved to Windows registry and restored the next time an annotation driver with the same system name (as defined in Database Setup) is started.

The driver window displays the user selections.
Note that decoded values are not shown in the driver's display.
Decoded depth and bottom condition readings can be seen using a Observation Physics Display.

Annotation Settings

Use Settings – Annotation to select the annotation format and output data content.
Use Options – Direct Annotation to send a fix mark and/or annotation comment directly to the echosounder or side-scan sonar.

Use Context Sensitive Help in the Annotation Dialog to get more information about each specific item.



With the Deso 25 annotation formats, some advanced settings are available:

For the Deso 25, this is automatic start and stop of paper feed when starting and stopping a recording session.
After EOL, paper feed will continue for a few seconds, and after this delay, an additional paper feed is given.
The chart speed can also be corrected (when paper is feeding), using the present vessel speed over ground.

Note: Be aware that the Deso will interpret a low speed value as a stop paper feed command.
Hence, when the vessel is stationary, testing these advanced annotation options will only result in some paper feed at EOL.