Raymarine SL72 User Manual

8-30 SL72 & SL72RC PLUS Pathfinder Radar & Radar/Chartplotter
SeaTalk® and
NMEA In
SeaTalk
®
and NMEA In
The primary data is in Table 8-7 :
Heading data should ideally contain both magnetic and true heading. If only
one is available then variation needs to be provided either manually or
automatically - see Variation Source on page 7-8.
Some other radars and chartplotters can exchange their cursors via SeaTalk.
Locked heading should be used for Course Up if available via SeaTalk.
Other data connected via a SeaTalk bus or via NMEA is generally displayed in
data boxes, e.g. depth, apparent wind angle and speed, time.
For details of received data refer to the table in Appendix D:SeaTalk and
NMEA Data Received and Transmitted.
SeaTalk
The SeaTalk standard allows compatible instruments to be connected by a
single cable carrying power and data in/out. This means that additional
instruments and functions can be added to a SeaTalk system, simply by
plugging them into the network.
SeaTalk is a precise, high-speed, bi-directional protocol which is flexible
enough to adapt to any number of instruments, without a central processor.
SeaTalk equipment can also communicate with non-SeaTalk equipment via
the NMEA standard.
Table 8-7: Function of SeaTalk and NMEA Data
Data Primary Uses Suggested Source
Heading North Up, Course Up modes
MOB (if speed data also available)
Autopilot compass,
Compatible NMEA Compass,
Compass connected to SeaTalk bus
Position MOB (also requires speed and HDG
data)
Position data in data box and Nav
Window
Waypoints and Marks
SL72RC PLUS chartplotter - Own
vessel position & Data Log
Existing GPS Navigator via SeaTalk bus
Existing GPS (or Loran-C) navigator with
NMEA output
SeaTalk GPS connected via Auxiliary
Junction Box
Speed MOB (also requires HDG data)
TTG and ETA calculations
As for position data
Log (speed through water)
Waypoint Graphical display
SL72RC PLUS chartplotter - way-
point and route transfer
Existing GPS Navigator via SeaTalk bus
Existing GPS (or Loran-C) navigator with
NMEA output

Raymarine SL72 Specifications

General

Brand	Raymarine
Model	SL72
Category	Radar
Language	English