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' Autohelm Raymarine: Z290 Nmea Bridge Z290 Bridge Between Sea Talk And Nmea Buses'




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Any reference to Raytheon or
RTN in this manual should be
interpreted as names Raytheon and RTN
are owned by the
Raytheon Bridge Operation and Installation Handbook 1
NMEA BRIDGE
Operation and
Bridge Operation and Installation Handbook 1 Introduction 3
Chapter 2 Mounting 4
Chapter 3 6
31 NMEA Output 6
32 NMEA Input 9
33 Main Alarm 12
34 Connecting to a Personal Computer 14
Chapter 4 Fault Finding 17
4 NMEA Bridge Operation and Installation Bridge Operation and Installation Handbook 5
Chapter 1 is the language used by all Autohelm products to This is unique to Autohelm The NMEA Bridge by
providing conversion between SeaTalk and NMEA 0183 data
format allows operation with other equipment
The NMEA Bridge provides
Conversion of NMEA 0183 data formats to SeaTalk
Conversion of SeaTalk to NMEA 0183 format
Operation of the Autohelm Main Alarm when an alarm
condition exists on the SeaTalk bus
RS232 terminals to send NMEA data to a personal computer
echoes NMEA out
6 NMEA Bridge Operation and Installation 2 a suitable location that is
away from direct contact with water
clean and greasefree
accessible for cabling
reasonably well protected from physical damage
1 Once a suitable location has been found thoroughly clean
the surface with an alcohol based cleaner
2 Remove the protective backing from the NMEA Bridge and
firmly press onto the mounting Bridge Operation and Installation Handbook 7
D4342
3 the NMEA Bridge may be attached using the 2
self tapping screws provided
4 Remove the top of the Bridge by squeezing the lid at each
end and pull away from the base
5 Route all the necessary cables into the Bridge
6 Connect the wires as described in section 3 Also secure
cables close to the unit
8 NMEA Bridge Operation and Installation 3 NMEA you have the appropriate SeaTalk the
data listed below is transmitted in NMEA 0183 format for use
with nonSeaTalk NMEA is also output in response to NMEA input
Data Transmitted NMEA Wind Angle MWV VWR
Apparent Wind Speed MWV VWR
Autopilot Alarms PNATD
Bearing to Waypoint BWC
Course Over Ground M VTG
Cross Track Error APB XTE
Date ZDA
Depth DBT
Distance Log VLW
Distance Trip VLW
GPS FixNo Fix GGA GLL
GPS HDOP GSA GGA
GPS PDOP GSA
Dead Reckoned XTE XTR
NMEA Bridge Operation and Installation Handbook 9
Data NMEA Header
GPS Satellite Azimuth GSV
GPS Satellite Elevation GSV
GPS Satellite PR Number GSV
GPS Satellite SNR GSV
GPS Differential Station ID GGA
GPS Differential AGE GGA
GPS Number of Satellites GGA
GPS Antenna Height GGA
GPS Quality Indicator GGA
Heading Magnetic or True HDM HDG VHW HDT
Latitude Longitude GGA GLL
Locked Heading HSC
MOB Cancel PNATA
Route WPL
Speed Over Ground VTG
Speed Through water Water MTW
Time ZDA
Time Offset ZTG
True Wind Angle MWV
Variation HDG
Waypoint Destination No APB BWC
Waypoint Arrival Alarm APB AAM
Waypoint Distance BWC
Waypoint Time To Go ZTG
GLL version 15 is transmitted if version 15 is received via
NMEA If GLL version 20 is received via NMEA GLL version
20 will be NMEA Bridge Operation and Installation NMEA Bridge should be connected to SeaTalk and the
other equipment as follows
NMEA SEATALK ALARM
RS232 SEATALK NMEA
Red Screen
v 5A 0v
Yellow Data
Screen 0v
Red v Power
D17711
NMEA Bridge Operation and Installation Handbook 11
32 NMEA Input
The NMEA Bridge can also be used to convert NMEA 0183 data
to SeaTalk NMEA 0183 data is also on NMEA
OUT in response to NMEA IN This allows to be connected directly to the SeaTalk bus
Note Data will not be transmitted to SeaTalk if it is already on
present on the SeaTalk bus
Data Received NMEA Wind Angle MWV VWR
Apparent Wind Speed MWV VWR
Bearing to Waypoint APB BWR BWC
RMB BER BEC
Course Over Ground M VTG VTA RMC RMA
Cross Track Error APB XTE APA
RMB XTR
Date ZDA RMC
Depth DBT DPT
Distance Log VLW
Distance Trip VLW
GPS FixNo Fix GGA GSA
GPS HDOP GGA GSA
GPS PDOP GSA
GPS Satellite Azimuth GSV
GPS Satellite Elevation GSV
GPS Satellite PR Number GSV
GPS Satellite SNR GSV
GPS Differential Station ID GGA
GPS Differential AGE GGA
12 NMEA Bridge Operation and Installation NMEA Header
GPS Number of Satellites GGA
GPS Antenna Height GGA
GPS Quality Indicator GGA
Heading Magnetic or True HDM HDG Longitude GGA GLL inc Version 15
RMC RMA
IMA GLP GOP GXP
MOB Cancel PNATA
Route WPL
Speed Over Ground VTG VTA RMC RMA
Speed Through water Water MTW
Time ZDA GLL ZFO ZTG
True Wind Angle MWV
Variation HDG HVM RMC
RMA HVD
Waypoint Destination No APB BWR
BWC RMB
BOD WCV BER BEC
Waypoint Arrival Alarm APB APA AAM
Waypoint Distance BWC BWR
RMB BER BEC
Waypoint Lat Lon BWC BWR BEC BER
NMEA Bridge Operation and Installation Handbook 13
Waypoint Capture last one next 4 ST123000 NMEA Bridge Operation and Installation Handbook
Yellow Data
Screen 0v
Screen
NMEA SEATALK ALARM
RS232 SEATALK NMEA
Red 12V
5A Fuse
Main Alarm
The NMEA Bridge can be used to drive the Autohelm Main
Alarm Cat No Z035 This alarm will sound as soon as one of
NMEA Bridge Operation and Installation Handbook 15
the following alarms is present on the SeaTalk bus
Deep Depth
Shallow Depth
Autopilot off course
Watch alarm
Wind shift
Low battery
Large Cross Track Error
No NMEA data
NMEA Data error
No autopilot Main power
No autopilot actuator Drive stopped
Stern drive auto release
Waypoint advance
The Main Alarm will sound 30 seconds after the This allows the alarm condition to be cancelled avoiding sounding of the main
NMEA Bridge Operation and Installation Handbook
The Main Alarm should be wired to the NMEA Bridge as follows
Black
Main Alarm
Z035
NMEA SEATALK ALARM
RS232 SEATALK NMEA
Red Screen
v 5A 0v
Yellow Data
Screen 0v
Red v Power
Connecting a Personal Computer
The NMEA Bridge can be used to send or receive NMEA data to
or from a personal computer via the RS232 OUT and NMEA
NMEA Bridge Operation and Installation Handbook 17
IN terminals as shown in the following Red Screen
v 5A 0v
NMEA SEATALK ALARM
RS232 SEATALK NMEA
Power
Yellow Data
Screen 0v
Red v
D17721
18 NMEA Bridge Operation and Installation Handbook
PC Serial Port Connections to NMEA
The following diagram shows the pin connections for 25 and 9
pin PC serial ports to NMEA
2 Transmit 2 Receive
3 Receive 3 Transmit
5 Ground
7 Ground
DB25 25 PIN DB9 9 PIN
SERIAL CONNECTOR SERIAL CONNECTOR Bridge Operation and Installation Handbook 19
Chapter 4 Fault Finding
All Autohelm products are tested to packing and shipment In the unlikely event that a fault
does occur the following check list should help cure Fault Cause Action
No operation No power supply Check the
SeaTalk bus
connectors are
correct between
the Bridge and
the power
supply
Check the
fusecircuit
breaker
NMEA data not Equipment not Refer to the
converted and setup to transmitted onto transmit correct operating
the SeaTalk bus NMEA sentences handbook
NMEA Bridge Check
incorrectly connections
wired
Variable
information such
as XTE bearing
to waypoint
LatLon already
on SeaTalk bus

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