Power Synchronization - Furuno MFD8 Installation Manual

2.6.2. Power Synchronization

A NN3D network is a system in which all components share information (navigation
data, settings, points, routes, etc) with each other. Furuno developed special Power
Synchronization features to allow proper network synchronization and functionality.
Sleep Mode:
The MFDs have a special "sleep mode" that allows each MFD to process data while
consuming low power. NN3D MFDs can be in 3 states:
- ON: This is the regular mode of operation. The screen is ON, the Power Light is green
and the user can interact with the device. The unit can process and share information
on the network.
- OFF: The MFD is completely OFF and doesn't process information. No power is
consumed in this state.
- Sleep Mode: The screen is off, the Power Light is orange and no user interaction is
possible (except turning the unit ON with the Power Key). Even though the MFD
appears off and the LCD is black, it will still process and share information with other
MFDs on the network. The MFD consumes lower current in this state. Any
NMEA2000/0183 and DRS sensors attached to the MFD ports will still function normally
when an MFD is in Sleep Mode.
NN3D Sleep Mode Functional Description: (Software Version 2.01 and higher) When
the first MFD in a network is powered ON (using the power key), all the other networked
MFD(s) will start automatically (power synchronization) and will go into sleep mode.
Pressing the Power key of an MFD in sleep mode will turn it ON. Pressing the power
key to turn OFF one MFD will turn OFF all the other networked MFD(s). In order to put a
specific MFD back into sleep mode, select the RotoKey "Sleep"
IMPORTANT: Power Synchronization functionality requires the use of Furuno
proprietary Hubs. The Internal MFDBB Hub and the optional Furuno HUB101 both
provide NN3D Power Synchronization functionality. Use of other generic Ethernet
Hubs/Switches, while allowed, will not enable NN3D Power Synchronization!
Caution must also be used in that only "Two Pair" Ethernet cables may be utilized with
generic hubs/switches so that the Power Synchronization signals are not short circuited
by "Four Pair" Ethernet cables. Note also that enabling the Power Synchronization
function in Navnet 3D is also very important for proper Data Synchronization and
system integrity! Please refer to next paragraph for more information.
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