Quick Start Guide for ST-NMEA (USB) V1.00
TEL + 44 1179 554474 www.digitalyacht.co.uk
4.3
$STALK Mode and 38400 Baud Rate
Some software systems can read/write the raw SeaTalk data using a special $STALK sentence. By default our ST-NMEA
Converter powers up in what we call “Normal” mode where it converts SeaTalk to/from standard NMEA0183 Sentences at
4800 baud. However, by sending it the following proprietary commands, it can be put in to $STALK mode and also work
at the higher NMEA0183 baud rate of 38400.
To turn ON/OFF the special $STALK mode use these commands;
$PDGY,STalk,On
$PDGY,STalk,Off
To change the baud rate use these commands;
$PDGY,Baud,38400
$PDGY,Baud,4800
If you intend to use the $STALK mode, we do recommend selecting the 38400 baud rate.
Note that the above commands do not need a checksum, but your terminal program will need to transmit the command
with <CR><LF> characters at the end. You will receive an acknowledgement from the ST-NMEA Converter.
The Mode and Baud Rate settings are saved in Non-Volatile memory and so the ST-NMEA converter will always power
up in the selected Mode and Baud rate. During Power Up, the two Yellow LEDs; “ST” and “NMEA” will illuminate to show
what mode and baud rate are set…
LED Status
Mode/Baud Rate
“NMEA” On for 1 sec
“Normal” Mode 4800 baud
“NMEA” Flash for 1 sec
“Normal” Mode 38400 baud
“ST” On for 1 sec
“$STALK” Mode 4800 baud
“ST” Flash for 1 sec
“$STALK” Mode 38400 baud
IMPORTANT NOTES
1.
SeaTalk
™
is a registered trademark of Raymarine UK Limited.
2.
Digital Yacht is not in anyway connected or associated with Raymarine UK Limited or its associated companies.
3.
No liability can be accepted for any injuries, damage or loss caused by using this ST-NMEA Converter.
Содержание ST-NMEA
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