Installation manual

Installation Manual
20222006 / Rev. A 27
If you, on a Class 1 product in the group, select a different
compass for the group, the IS12 will continue to present the gyro
compass heading irrespective of the group selection.
Some SimNet products are restricted to use internal data sources
only. Hence, they can only be recognized as part of the “Simrad
group” if they are selected as source for the Simrad group on a
Class 1 product.
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In the system block diagram above EQ33 is a dedicated Echo
sounder (fish finder) and will not present external depth data
from SimNet, only internal depth data. EQ33 will be
automatically selected as depth source for the Simrad group, i.e.
CP33 and IS12 DATA will also use and present depth data from
the EQ33.
For all other DataTypes EQ33 will default to follow the Simrad
group and present the same navigation and position data as the
CP33 and IS12 DATA.
IS12 SPEED is a dedicated speed instrument and will therefore
only display “own” data, and supply these to other products on
the bus. So IS12 SPEED will be the source for water speed, log
and temperature data in the Simrad group.
IS12 DEPTH is a dedicated depth instrument and will only
display its own depth data. It will not
be automatically selected
as the (Simrad group) source for depth in this system because
EQ33 is a Class 1 product that has priority. It is, however,
possible to manually change depth source for the group on the
CP33. All products except the EQ33 will then change to IS12 as
depth source. While the EQ33 will continue to present its own
depth data.