Garmin Gps Plus 2 Manual

85
Specifications
The GPS II
+is constructed of high-quality materials and should not require user maintenance. If your unit ever
needs repair, please take it to an authorized GARMIN service center. The GPS II+has no user-serviceable parts.
Never attempt any repairs yourself. To protect your GPS II+, keep it in its carrying case (optional accessory) when
not in use, and never allow gasoline or other solvents to come into contact with the case. To clean the case and
lens, use a soft cloth and a household...

86
Specifications (cont.)
Position Accuracy:1-5 meters (3-15 ft.) with DGPS 
corrections*
15 meters (49 ft.) RMS**
Velocity Accuracy:0.1 knot RMS steady state 
Dynamics:Performs to specification to 6gÕs
Interfaces:NMEA 183, and RS-232 DGPS correction
Antenna:Detachable with standard BNC connectorPOWER
Input:Four 1.5-volt AA batteries or 10-32v DC
Power Consumption:0.75 watts max.
Battery Life :   Up to 24 hours 
 Note: Alkaline batteries lose a significant amount of their capacity
as temperature...

RReceive Data In
TTransmit Data Out
+10-32vDC In
-Ground Connection
87
Specifications and Wiring (cont.)
Three optional cables are available to connect the GPS II+to an external power source or interface with
another unit or PC:
¥ Power/Data CableÑ 
Allows connection to DC power source and
Input/Output devices.
¥ Cigarette Lighter AdapterÑ 
Allows connection to a 12-volt DC cigarette
lighter plug.
¥ Data Cross-Load CableÑ 
Allows data transfer between other GARMIN
GPS units.
¥ PC Kit Data CableÑ 
PC...

88
Specifications and Wiring (cont.)
The NMEA 0183 version 2.0 interface format is sup-
ported by the GPS II
+and enables the unit to drive up to
three NMEA devices:
NMEA 0183 version 2.0
Approved sentences:
GPGGA, GPGLL, GPGSA, GPGSV, GPRMB,
GPRMC, GPRTE, GPWPL, GPBOD
Proprietary sentences:
PGRME (estimated error), PGRMM (map datum),
PGRMZ (altitude), PSLIB (beacon receiver control)
Appendix B
DGPS corrections are accepted on RTCM-104 v. 2.0
format. The GARMIN GBR 21 is the recommended
beacon receiver...

89
Remote Antenna Installation
The GPS II+Õs antenna may be removed to allow attachment of an optional remote-mount GPS antenna
for certain applications.
To remove the attached antenna:
1. Rotate the antenna toward the rear of the unit as shown. 
Note: The antenna can only be removed or installed 
in this position.
2. Pull the antenna gently away from the unit.
3. To install the optional external antenna, mate the 
BNC connector notches with the mounting posts 
and turn the knurled knob one-quarter turn...

90
Messages
The GPS II+uses a flashing on-screen message indicator to alert you to important information. Whenever
the message indicator appears, press PAGE to view the message page. There are two types of messages: tem-
porary alerts and condition alerts. Temporary alerts can be cleared from the message page, while condition
alerts remain until the condition has been resolved. For your safety, pay careful attention to all messages.
Appendix D
Active WPT CanÕt be DeletedÑYou have attempted to
change the...

91
Messages (cont.)
No RTCM InputÑBeacon receiver is improperly connected or
baud rates do not match.
Poor GPS CoverageÑThe unit cannot acquire the necessary
number of satellites to compute a position. Try another loca-
tion with a clearer view of the sky.
Power Down and Re-initÑThe GPS II+
cannot calculate a
position due to abnormal satellite conditions. Turn the unit off,
and use other means to verify the last position shown. Try the
unit again later, possibly in a different location.
Real Time Clock...

92
Map Datums
The following are the map datums available for the GPS II+
. Menu Page abbreviations are listed first, followed
by the corresponding map datum name and area. The default map datum for the GPS II+
is WGS 84.
Appendix E
AdindanAdindan- Ethiopia, Mali, Senegal, Sudan
AfgooyeAfgooye- Somalia
AIN EL ABD Ô70AIN EL ANBD 1970- Bahrain Island, Saudi
Arabia
Anna 1 Ast Ô65Anna 1 Astro Ô65- Cocos Isl.
ARC 1950ARC 1950- Botswana, Lesotho, Malawi,
Swaziland, Zaire, Zambia, Zimbabwe
ARC 1960ARC 1960-...

93
Map Datums (cont.)
Corrego AlegrCorrego Algre-Brazil
DjakartaDjakarta (Batavia)- Sumatra Island (Indonesia)
Dos 1968Dos 1968- Gizo Island 
(New Georgia Islands)
Easter Isld 67Easter Island 1967
European 1950European 1950- Austria, Belgium, Denmark,
Finland, France, Germany, Gibraltar, Greece,
Italy, Luxembourg, Netherlands, Norway,
Portugal, Spain, Sweden, Switzerland
European 1979European 1979- Austria, Finland, Netherlands,
Norway, Spain, Sweden, Switzerland
Finland HayfrdFinland Hayford- Finland...

94
Map Datums (cont.)
Mahe 1971Mahe 1971- Mahe Island
Marco AstroMarco Astro- Salvage Island 
MassawaMassawa- Eritrea (Ethiopia)
MerchichMerchich- Morocco
Midway Ast Ô61Midway Astro Ô61- Midway 
MinnaMinna- Nigeria
NAD27 AlaskaNorth American 1927- Alaska
NAD27 BahamasNorth American 1927- Bahamas 
(excluding San Salvador Island)
NAD27 CanadaNorth American 1927- Canada and
Newfoundland
NAD27 Canal ZoneNorth Am. 1927- Canal Zone
NAD27 CaribbnNorth American 1927- Caribbean (Barbados,
Caicos Islands, Cuba,...