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Sonar Research LPM23 - 22


Driver to decode tide heights and system data (datum, gain, noise, voltage status and speed of sound) from the Sonar Research LPM23 Tide Gauge.

Driver Information

Driver Sonar Research LPM23  Interface Type Serial  Driver Class Type Terminated 
UTC Driver (question) No Input / Output Input and Output  Executable DrvSonarResearchLPM23.exe 
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Decoding Notes

This driver will decode a tide observation as a tide gauge system and 5 generic observations (datum, gain, noise, voltage status and speed of sound) as a miscellaneous system.

You can use the "Quality Indicator" alert (raw data alert) of the Alert Display to check the validity of the depth observation.

Database Setup

Default serial interfacing parameters for the Sonar Research LPM23 are 1200 baud, 8 data bits, 2 stop bits and no handshaking. Enter "1" for the slot number for the tide gauge observation (see also table below).

The tide observation is defined at a "Fixed Node". The driver only decodes tide heights from one tide gauge.

If the (local) tide datum at the transmitter unit and the survey datum do not coincide, the separation in height between the two datums should be entered as "Property" of the tide observation, i.e. as "Fixed system C-O".

The other values contained in the data string can also be decoded and displayed in QINSy, for example in the Timeplot and Alphanumerics displays. Such data is also stored in the QINSy database if data is logged, and as such can also be examined with the QINSy Analyse tool (DbRawInspect). Add five (5) "Observations" of type "Generic" to the tide gauge system (Datum, Gain, Noise, Voltage Status and Speed of Sound) or add these observations to a new "Miscellaneous system" with the same driver name and interface parameters.

Enter the slot number for each generic observation according to the following table:












Voltage status


Speed of sound