84 User’s Manual INNOMAR Parametric Sub-Bottom Profilers / SESWIN
84 Innomar Technologie GmbH (2023-01)
Beside this fixed delay, it is also possible to apply a delay that depends on the range currently
used by the INNOMAR system, or on the external trigger period.
This feature is useful if the INNOMAR sub-bottom profiler is used together with a multibeam echo
sounder (MBES) and triggered by the MBES. In that case the ping delay should be set to half the
water depth to get the lowest impact of the INNOMAR system to the MBES data. This can be
automated by setting the “Delay as percentage of range” to 50% and using the MBES water
depth for automatic range shift within the SESWIN software. The resulting delay is given in
meters.
It is also possible to combine fixed delay and delay based on used range:
6.2.3 External Synchronisation with Increased Ping Rate (Bursts)
If you have to use a master device with a very low ping rate, like a multi-beam echo sounder in
deeper waters or a boomer, you may increase the ping rate of the INNOMAR SBP system to get
optimal results.
With the “ping rate increase” feature of the INNOMAR system there is a burst of sound pings
initiated, every time an external trigger event occurs. The user sets the number of pings within
one burst; the time delay of the pings within one burst is set automatically depending on the range
settings.
The following pictures illustrate what happens with different settings.
Due to the transmitted bursts of sound pings it may happen that the SESWIN echo screen scrolls
not continuously, especially when using a small number of pings at large trigger intervals.
“Sync IN”
“Sync IN”
“Sync OUT”
3 pings
2 pings
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