Systems Of Several Instruments; Nmea; Navbus - NorthStar NS3100 Multi Instrument Reference Manual

8 Systems of several instruments

8-1 NMEA

8-2 NavBus

16
Several Northstar instruments can be connected together during installation to share data. There are two ways
of connecting instruments together, NavBus or NMEA.
NMEA is an industry standard. Speed, depth,
temperature and log data may be output which
can be read and displayed by any compatible
Northstar (eg. NS3100 Multi Depth) or other NMEA
instrument. Speed (RMC) can be received via NMEA
and displayed by the NS3100 Multi (see section 10-1
for wiring).
If an external RMC (speed) input is available from
a GPS instrument, then you can set up the NS3100
Multi to use this for speed readings (see section 10-2,
step 2);
NavBus is a Northstar proprietary system. It is high
speed and allows a wide range of data to be shared
by the instruments.
When instruments are connected by NavBus:
If you change the units, alarms or calibration in
one instrument, then the values will automatically
change in all other instruments of the same type
Each instrument can be assigned to a group of
instruments (see section 10-2, step 3). If you
change the backlight in an instrument in group
1, 2, 3 or 4 then the backlight will automatically
change in the other instruments in the same
group. If you change the backlight in an
instrument in group 0 then no other instruments
are affected.
Note:
A speed from a paddlewheel sensor is the speed
that the boat is moving through the water. A
speed from a GPS is the speed over the ground.
If there is a current then these two speeds will be
different.
If a transducer is not fitted to the unit and the
corresponding external data is not available then
the displayed value will be 0 (for example, when
using a GPS input for speed and no speed/
temperature transducer is fitted then temperature
displays as 0).
If an alarm sounds, mute it by pressing
instrument which can display that alarm. For
example, mute a depth alarm on any instrument
that can display depth.
If the unit does not have a depth or a speed/
temperature transducer fitted then the unit will
automatically take depth, speed and temperature
readings from another instrument, via NavBus, if the
data is available.
For more information, refer to the NavBus
Installation and Operation manual.
on any
Northstar NS3100 MULTI