User`s manual

MAIN MENU (con't)
Page 11 of 13
Com Ports Menu
SportScan Head to select the serial communications port (COM1-COM32)
for communicating with the SportScan. Ports that are
already used or unavailable are not displayed. All
communication through this port is at 115200 bits per
second, No Parity, 8 Data Bits and 1 Stop Bit.
GPS Input to select the serial communications port (COM1-COM32)
for receiving Lat/Lng ships position coordinates and ships
speed and heading information from a GPS receiver. For
ships position, this port can accept the NMEA 0183
$GPGLL string, the $GPGGA string or the $GPRMC
string. If Speed from GPS is selected in the Misc Menu,
and GLL or GGA is selected, the $GPVTG string will be
used for the speed and heading displays. If RMC is
selected, the speed and heading information from the
$GPRMC string is used. All communication through this
port is at 4800,N,8,1.
If the program detects only one available COM port (i.e.
on a laptop computer), this port will be reserved for
communications with the SportScan only and GPS Input
will not be available.
As default on most computers, COM1/COM3 share IRQ4
(interrupt request #4) and COM2/COM4 share IRQ3.
Ensure that the COM port you select for GPS Input does
not share its IRQ with the SportScan COM port. This could
cause the program to hang up!
GLL to use Lat/Lng coordinates from the $GPGLL string.
$GPVTG is used for speed/heading.
GGA to use Lat/Lng coordinates from the $GPGGA string.
$GPVTG is used for speed/heading.
RMC to use Lat/Lng coordinates and speed/heading information
from the $GPRMC string