160 User’s Manual INNOMAR Parametric Sub-Bottom Profilers / SESWIN
160 Innomar Technologie GmbH (2023-01)
13.3 Trigger / Synchronization
13.3.1 How can I reduce the ping rate?
Q: I’m working in extremely shallow water and the system’s ping rate is too high.
In normal operation the ping rate is calculated by the system based on the range settings, see
section 6.1 on page 81. If a lower ping rate is desired, you may reduce it by a certain factor within
the “Ping Rate Settings” dialogue, see section 5.9.6 on page 53 for details.
13.3.2 How can I get a fixed ping rate?
Q: I need a fixed ping rate that is not changing with range settings.
In normal operation the ping rate is calculated by the system based on the range settings, see
section 6.1 on page 81. If required, the ping rate can also be set to a fixed value within the “Ping
Rate Settings” dialogue, see section 5.9.6 on page 53 for details.
13.3.3 How can I synchronize a sparker that runs at a lower ping rate?
Q: I want to trigger a sparker from the INNOMAR SBP. The sparker should run at a lower
ping rate, let’s say every 160ms. The INNOMAR SBP shall do 3 pings in between.
For this you may set the SBP to a fixed ping rate as above and use “Alternating Trigger” mode,
see section 6.3 on page 86ff and section. The sparker case is discussed in section 7.7 on page
105.
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