Messages; Nmea/Dgps - Lowrance GlobalMap Sport Installation And Operation Instructions Manual

To adjust the alarm's distance, move the black
box to the "DST" menu item, then press the
left or right arrow keys to increase or decrease
the alarm's distance.
When you're finished adjusting the alarms,
press the EXIT key to erase this menu.

MESSAGES

At the bottom of the GPS Alarms menu is po-
sition (POS) and DGPS message selections.
The position message (shown below) appears
for a few seconds whenever the GlobalMap
Sport™ locks onto the satellites and shows a
position. It also appears when the unit loses
the lock onto the satellites and cannot navi-
gate.
The DGPS message appears whenever the
unit begins or stops using DGPS data to help determine your position.
To turn on either message, select the GPS Alarms menu from the main
menu, then move the black box to the desired message and press the
right arrow key to turn it on. Press the EXIT key to erase this screen.
NMEA / DGPS
The GlobalMap Sport™ transmits data through the data port in the back
of the unit using NMEA 0183 format, version 1.5 or 2.0. This data is used
by other electronic devices such as autopilots for position and steering
information.
DGPS on the other hand, is a data input. DGPS is an acronym for Differ-
ential Global Positioning System. Currently, it relys on a system of ground-
based transmitters that send correction signals to small DGPS receivers.
These receivers connect to the GlobalMap Sport™ through the data port.
DGPS gives you more accurate positions than is otherwise possible.
See the sample wiring diagrams on the next page for general wiring pro-
cedures. You'll need a NDC-1 adapter cable for your GlobalMap Sport's™
data port. Read your other product's owner's manual for more wiring infor-
mation.
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