Navsight Solution
– Hardware Manual
NAVSIGHTHM.1.3
6. Important notices
6.1. Maintenance
Navsight solution does not require particular maintenance when operated in normal conditions.
Nevertheless, if you would like to maintain your sensor performance to the highest level, SBG Systems can
provide a maintenance service with regularly planned checkups and calibrations.
When used in harsh environments, please use damp clothes to clean the surface of the Enclosure.
6.1.1. Subsea enclosures maintenance
Subsea enclosures are made out of Titanium to prevent corrosion issues. However, care should be taken to
regularly rinse the enclosure with clear water after use in salt water.
Additionally, the subsea connectors are made in Chloroprene rubber. In order to maintain all their
mechanical properties, the cable connectors need to be regularly greased with a silicon compound such as
Molykote 44 medium. Failing to do so can lead to the fusion of connector plug and receptacle.
6.2. Absolute maximum ratings
Stresses above those listed under the Absolute Maximum Ratings may cause permanent damage to the
device. This is a stress rating only; functional operation of the device at these or any other conditions above
those indicated in the operational section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect device reliability.
6.2.1. Processing units
Parameter
Rating
VDD – GND
+/- 36 V
Galvanic isolation:
Power supply input to chassis ground
Signal grounds to chassis ground
+/- 250 V
Rx+, Rx-, Logic inputs pins input voltage to signal SGND
±12 V
Logic output Max current
SYNC OUT A: 35 mA
CANH, CANL
±36 V
Shock
500 g for 0.3 ms
Table 1: Absolute maximum ratings
6.2.2. IMU modules
Parameter
Rating
VDD – GND
+/- 36 V
Galvanic isolation between various GND pins
+/- 250 V
Rx+, Rx-, Logic inputs pins input voltage to signal GND
±18 V
Shocks
500 g for 0.3 ms
Table 2: Absolute maximum ratings
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