Raymarine L1250D, Owner'S Handbook Manual

Page: 88 / 246

4-10 HD Series Fishfinders
NME
A
-Out Se
t U
p
You should therefore switch
OFF
the Bridge NMEA Heading option to ensure
the course computer receives the same NMEA heading input as the rest of the
system.
NMEA-Out Set Up
This option lets you disable the transmission of specific NMEA sentences,
which may be necessary if you have other instruments sending the same data
as your fishfinder. See
Appendix D for a list of NMEA input messages.
For example, if the DPT (depth) sentence is set
ON
but the fishfinder’s
transducer is designed to sense temperature and speed only, the depth value
will be transmitted as zero. If you also have an ST60 Depth instrument
installed, there may be confusion between the zero depth sent by the fishfinder
and the actual depth sent by the ST60. Turning
OFF
the DPT sentence disables
the reading from the fishfinder.
The factory default for all NMEA sentences is transmission
ON
. Disable the
sentence by selecting the
OFF
soft key. The following table displays the
available NMEA sentences and their meanings.
Table 4-2: NMEA Sentences
Sentence Meaning
APB Autopilot Sentence “B”
BWC Bearing & Distance to Waypoint
BWR Bearing & Distance to Waypoint – Rhumb Line
DBT Depth Below Transducer (see note below)
DPT Depth (see note below)
MTW Water Temperature
RMB Recommended Minimum Navigation Information
RSD Radar System Data
RTE Routes
TTM Tracked Target Message
VHW Water Speed and Heading
VLW Distance Travelled through the Water
WPL Waypoint Location
GGA Global Positioning System Fix Data
GLL Geographic Position – Latitude/Longitude
RMA Recommended Minimum Specific Loran-C Data
81213_1.book Page 10 Monday, March 17, 2003 1:14 PM