Page
49
of
254
Version 6.3
Rev
r012
Date
05-11-2022
4
SONAR INTERFACE MODULE
(SIM) INSTALLATION and
INTERFACING
4.1
Sonar Interface Module (SIM)
Figure 35: Sonar Interface Module (SIM)
The Sonar Interface Module is the communication centre for the Sonic MBES. 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. The SIM is interchangeable; it is not tied to a unique sonar head.
4.1.1
Physical installation
The 15 metre cable, from the Sonic MBES 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 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 while 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.
1
For the I2NS SIM, please refer to
Appendix I
Summary of Contents for 2026
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Page 158: ...Figure 174 Smooth log information copied from a real time survey log...
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Page 237: ...Page 237 of 254 Version 6 3 Rev r012 Date 05 11 2022 Figure 215 Sonic 2026 Projector...
Page 247: ...Page 247 of 254 Version 6 3 Rev r012 Date 05 11 2022 Figure 225 SIM Stack Outline...
Page 249: ...Page 249 of 254 Version 6 3 Rev r012 Date 05 11 2022 Figure 227 Locking Ring type Deck Lead...
Page 251: ...Page 251 of 254 Version 6 3 Rev r012 Date 05 11 2022 Figure 229 I2NS Type 82 IMU offsets...
Page 253: ...Page 253 of 254 Version 6 3 Rev r012 Date 05 11 2022 Figure 231 I2NS SIM Dimensions...