4 SONIC 2024/2022 SONAR INTERFACE MODULE (SIM)
INSTALLATION and INTERFACING
4.1 Sonar Interface Module (SIM)
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Figure 20: Sonar Interface Module (SIM)
The Sonar Interface Module is the communication centre for the Sonic 2024/2022 multibeam
system. The SIM receives commands from Sonic Control 2000 and passes the commands to the
sonar head. The SIM also receives the PPS and timing information, which is transferred to the sonar
head to accurately time stamp all bathymetry data in the sonar head. The data, from the sonar
head, passes through the SIM’s Gigabit switch and onto the data collection computer. Sound
velocity, from the probe located near the sonar head, and motion data are also interfaced to the
SIM to be passed onto the sonar head.
4.1.1 Physical installation
The 15 metre cable, from the Sonic 2024/2022 Receive Module, connects directly to the SIM via an
Amphenol ™ style connector. Therefore, the SIM must be located within 15 metres of the sonar
head (a 50 metre cable is an option). The SIM is not water or splash proof, so it must be installed in
a dry, temperature- controlled environment.
The SIM is small and light enough so as to be unobtrusive, but care needs to be taken that it is
secured in such a manner so that it will not fall or move whilst the vessel is at sea. The SIM can be
secured to a surface (horizontal or vertical) through the pass-through holes that are under the
corner trim pieces. The holes accept: #8-32 pan head, M4 pan head or M5 socket head cap screws.
The trim piece can be removed by hand to expose the securing holes.
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For the I2NS SIM, please refer to Appendix I
Page 33 of 210
Version 5.0 Rev r002
Date 05-08-2014
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