PTP

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Section heading
no audio/video

Up to 100Kbps

up to 100 data fields

Maximum 2KB (16Kbits) data, refreshed 6 times a second

Data types
Radar, 360 bytes 2.5Kb 1 degree, 8bit resolution

sonar, 360 bytes 2.5Kb 1 degree, 8bit resolution

depth finder

Gps coordinates

various tempature controlls

cabin preasure etc

real time clock

wind speed, direction

currnts speed/direction

compass

speed/direction (direction facing will likly not be direction traveling

Leads
Unidirectional, like midi

data may not loop back

5v power

Devices
PTP in, PTP out plugs on

Each sensor takes data in, adds own data and outputs updated stream

Each display or controlable device takes data in, uses it and passed through stream to next device

Devices may perform both functions

Hubs can combine data from multiple sources reducing latency involved in sequentially adding to data stream,

Conversly hubs can be used to output to multiple device that may require more power

Devices may also include a data logger