Garmin GBR 21 Manual de usuario

owner’s

manual

and

reference

guide

GBR 21

beacon receiver

GARMIN International, Inc.

1200 East 151st Street, Olathe, Kansas 66062, U.S.A.

GARMIN (Europe) Ltd.

Unit 5, The Quadrangle, Abbey Park Industrial Estate, Romsey, SO51 9AQ, U.K.

GARMIN (Asia) Corporation

No. 68, Jangshu 2nd Rd., Shijr, Taipei County, Taiwan

www.garmin.com

Part Number 190-00069-00 Rev. C

GARMIN International, Inc.

1200 East 151st Street, Olathe, Kansas 66062, U.S.A.

Tel. 913/397.8200 or 800/800.1020

Fax 913/397.8282

GARMIN (Europe) Ltd.

Unit 5, The Quadrangle, Abbey Park Industrial Estate, Romsey, SO51 9AQ, U.K.

Tel. 44/1794.519944

Fax 44/1794.519222

GARMIN (Asia) Corporation

No. 68, Jangshu 2nd Rd., Shijr, Taipei County, Taiwan

Tel. 886/02.2642.8999

Fax 886/02.2642.9099

be reproduced, copied, transmitted, disseminated, downloaded or stored in any

storage medium, for any purpose without prior written consent of GARMIN

Corporation. GARMIN Corporation hereby grants permission to download a single

copy of this manual onto a hard drive or other electronic storage medium to be

viewed for personal use, provided that such electronic or printed copy of this

manual contains the complete text of this copyright notice and provided further that

any unauthorized commercial distribution of this manual is strictly prohibited.

Information in this manual is subject to change without notice. GARMIN

Corporation reserves the right to change or improve its products and to make

changes in the content without obligation to notify any person or organization of

such changes. Visit the GARMIN website for current updates and supplemental

information concerning the use and operation of this and other GARMIN products.

Website address: www.garmin.com

GARMIN and GBR 21 are registered trademarks of GARMIN Corporation and may

not be used without the express permission of GARMIN Corporation.

January 2000 Part Number 190-00069-00 Rev. C Printed in Taiwan

Introduction

Limited Warranty

GARMIN Corporation warrants this product to be free from defects in

materials and workmanship for one year from the date of purchase.

GARMIN will, at its sole option, repair or replace any components which

fail in normal use. Such repairs or replacement will be made at no charge to

the customer for parts or labor. The customer is, however, responsible for

any transportation costs. This warranty does not cover failures due to

abuse, misuse, accident or unauthorized alteration or repairs.

THE WARRANTIES AND REMEDIES CONTAINED HEREIN ARE

EXCLUSIVE AND IN LIEU OF ALL OTHER WARRANTIES EXPRESSED

OR IMPLIED, INCLUDING ANY LIABILITY ARISING UNDER WAR-

RANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR

PURPOSE, STATUTORY OR OTHERWISE. THIS WARRANTY GIVES YOU

SPECIFIC LEGAL RIGHTS, WHICH MAY VARY FROM STATE TO STATE.

IN NO EVENT SHALL GARMIN BE LIABLE FOR ANY INCIDENTAL,

SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES, WHETHER

RESULTING FROM THE USE, MISUSE OR INABILITY TO USE THIS

PRODUCT OR FROM DEFECTS IN THE PRODUCT. SOME STATES DO

NOT ALLOW THE EXCLUSIONS OF INCIDENTAL OR CONSEQUEN-

TIAL DAMAGES, SO THE ABOVE LIMITATIONS MAY NOT APPLY TO

YOU.

To obtain warranty service, call the GARMIN Customer Service

department (913/397.8200) for a returned merchandise authorization

number. The unit should be securely packaged with the tracking number

clearly marked on the outside of the package, and sent freight prepaid and

insured to a GARMIN warranty service station. A copy of the original sales

receipt is required as the proof of purchase for warranty repairs. GARMIN

retains the exclusive right to repair or replace the unit or software or offer a

full refund of the purchase price at its sole discretion. SUCH REMEDY

SHALL BE YOUR SOLE AND EXCLUSIVE REMEDY FOR ANY BREACH

OF WARRANTY.

Introduction

Cautions

All differential beacon receivers decode correction data determined at

the beacon transmitter site via a GPS receiver(s). The GPS system is

operated by the government of the United States which is solely

responsible for their accuracy and maintenance. The DGPS beacon

transmitters are operated by the U.S. Coast Guard (or similar govern-

ment agency in other countries) which is responsible for their accuracy

and maintenance. The Global Positioning System and the Differential

Global Positioning System are under development and are subject to

changes which could affect accuracy and performance of all DGPS

equipment. Although a DGPS system is a precision electronic

NAVigation AID (NAVAID), any NAVAID can be misused or misinter-

preted, and therefore become unsafe. Use the DGPS system at your own

risk. To reduce this risk, carefully review and understand all aspects of

this Owner’s Manual and carefully compare indications from your GPS

receiver to all available navigation sources including the information

from other NAVAIDs, visual sightings, charts, etc. For safety, always

resolve any discrepancies before continuing navigation.

NOTE: This device complies with Part 15 of the FCC rules.

Operation of this device is subject to the following conditions: (1) This

device may not cause harmful interference, and (2) this device must

accept any interference received, including interference that may cause

undesired operation.

The GARMIN GBR 21 does not contain any user-serviceable parts.

Repairs should only be made by an authorized GARMIN service center.

Unauthorized repairs or modifications could void your warranty and

authority to operate this device under Part 15 regulations.

Introduction

Table of

Contents

Introduction

Limited Warranty........................................................1

Cautions .....................................................................2

Table of Contents .......................................................3

List of Figures ............................................................4

Overview

Capabilities & Package Contents................................5

Installation

Mounting the Receiver ............................................6-7

Mounting the Antenna ...............................................8

Connecting GBR and GPS ....................................9-11

Operation

Using the GBR 21 ...............................................11-13

Reference

DGPS: How It Works ..........................................13-14

Sources of Error ..................................................15-16

Troubleshooting Chart ........................................17-18

GBR 21 Specifications ..............................................19

Index ........................................................................20

Mounting Template .........................................................21

Installation

Figure 1: Mounting the Receiver............................................page 6

Figure 2: GBR 21 Cable Connections............................................7

Screen Example: GPS 12/12XL/48 Main Menu.............................8

Screen Example: GPS 12/12XL/48 Input/Output Settings.............8

Screen Example: GPS 12/12XL/48 Beacon Receiver Setup Page....9

Figure 3: Sample Wiring Diagram for GARMIN GPS units....10-11

Operation

Screen Example: GPSMAP Fixed Mount* Main Menu................12

Screen Example: GPSMAP Fixed Mount* Input/Output Page.....12

Reference

Figure 4: The DGPS System.........................................................13

Screen Example: GPSMAP Fixed Mount* Beacon Settings..........13

Figure 5: Shipboard DGPS System..............................................14

Screen Example: GPS Handheld** Main Menu...........................14

Screen Example: GPS Handheld** Interface Settings..................14

Screen Example: GPS Handheld** Beacon Settings....................15

Screen Example: GPS Handheld** Beacon Log Page...................15

Screen Example: Satellite Status Page.........................................17

Screen Example: “No Differential Position” Error.............................18

Mounting Template....................................................................21

*Screen examples apply to models 130/135/175/180/185/230/235

**Screen examples apply to models III/III+/12Map/NavTalk

Introduction

List of

Figures

Capabilities

The GBR 21 offers a host of powerful capabilities to

enhance the performance and accuracy of your GARMIN

GPS receiver:

• Performance— Single channel operation provides

high-sensitivity manual tuning throughout the

beacon broadcast band.

• Ease of Use— Operation is controlled using the

Beacon Receiver Setup and Beacon Log pages on

your GPS unit.

• Convenience— May be remotely mounted in an

out-of-the-way location. Receiver status informa-

tion is displayed directly on the GPS unit.

• Low Power Consumption— Draws approxi-

mately 130 milliamps during normal operation.

• Interfaces — User-selectable operation for 4800 or

9600 baud.

• Accuracy— Improves position accuracy of GPS

unit to better than 10 meters (2 drms).

Package Contents

Your GARMIN GBR 21 package includes:

• GBR 21 unit

• Power/Data Cable

• Antenna coupler w/ 30’ cable & whip antenna

or GA 22/23 H-field beacon antenna w/ 30’ cable

• Owner’s Manual

• Beacon Reference Card

This package provides the materials required to

permanently install the GBR 21 and connect it to your

GARMIN GPS unit. In addition to supplying power to the

GBR 21, the power/data cable is used to interface the GBR

21 to the GPS unit. The receiver may be powered by an

external 10-18 VDC power source. Power to the receiver

should be controlled by an on/off switch (not included),

such as an accessory switch on the control console.

Capabilities &

Package Contents

The GBR 21 may be used with a

variety of GARMIN GPS

receivers. The list below

identifies most, but not all,

compatible models. If your GPS

receiver is not listed, you may

check with your GARMIN

dealer or contact GARMIN

product support at 1-800-800-

1020 to verify compatibility.

•GPS II/II+/III/III+/III Pilot

•GPS eMap/eTrex/NavTalk

•GPS StreetPilot/ColorMap

•GPS 12/12XL/12CX/12Map

•GPS 38/40

•GPS 45/45XL/48

•GPS 50/75

•GPS 65

•GPS 89/90/92/95

•GPS 120/125

•GPSCOM 170/190

•GPSMAP 130/135/180/185

•GPSMAP 162/168

•GPSMAP 175/195/295

•GPSMAP 210/220/215/225

•GPSMAP 230/235

Overview

Mounting the Receiver

Please read through these instructions thoroughly before

attempting installation. Make sure you completely understand

these instructions before you begin. When in doubt, seek

professional assistance.

The receiver may be mounted at a remote location,

under the dash or behind a panel. However, you may

wish to mount the receiver at a location that allows easy

viewing of the LED status light for immediate indication

of receiver status.

The following items are required to complete the

installation of your GBR 21:

• Antenna mount (standard 1-inch, 14 threads per

inch)

• Hardware (to secure the GBR 21)

• On/off switch (to control power to the GBR 21)

It is recommended that the system be temporarily

hooked up with the wiring and unit placement

approximating the desired final installation. Then check

operation with potential local interfering equipment

turned on and off. For example, other electronic

equipment, fan motors, engine ignition, alternators or

generators can be sources of interference.

INSTALLATION NOTES

Recommended Screw/Bolt Diameter: #4 or #6

Material: Stainless Steel

Length: Select per your installation

Locknuts or lockwashers are recommended.

Hardware shown is for example purposes only.

Installation

Mounting the

Receiver

Figure 1: Mounting the Receiver

If a problem is found, try altering the location of the

unit or wiring. Often moving the antenna a few feet away

from the source of interference will solve the problem.

When a suitable configuration is found, a permanent

installation should be made.

The GBR 21 may be mounted on any flat surface.

Select the mounting location according to your

preferences— either an out-of-the-way location (such as

under the dash) or at an accessible location where the

LED status light will be visible. Keep in mind that from

this mounting location cables will be routed to the

antenna and to the GPS unit.

1. Drill the mounting holes (4) for the GBR 21

according to the mounting hardware that will be

used. Mounting hardware is not included with the

GBR 21. You should select the mounting hardware

suitable for your installation. Stainless steel (#4 or

#6 diameter) hardware is recommended.A

mounting template is provided inside the back cover

of this manual.

2. Mount the GBR 21 at this location using the

selected hardware.

3. Connect the power/data cable to the GBR 21,

observing the proper polarity as indicated by the

notch in the connector.

Figure 2: GBR 21 Cable Connections

4. Connect the RED wire from the power/data cable to

an accessory switch on the dash. If an accessory

switch is not available, a standard SPST switch may

be used (not included).

5. Connect the other end of the accessory switch to

the ship’s positive 10-18 Volt DC power source.

6. Connect the BLACK wire from the power/data cable

to vessel ground (or the negative terminal of the

ship’s 10-18 Volt DC power source).

Installation

Mounting the

Receiver

Alignment Notch

Power/Data ConnectorBNC Connector

Mounting the Antenna

The supplied antenna coupler fits a standard 1-inch

antenna mount (not included). Like the receiver, the

antenna should be placed away from all sources of

interference. As a general rule, mount the antenna at least

three feet from all other antennas and the vessel’s electrical

system components (alternator/ignition system). Position

the antenna so that the clearest view in all directions is

obtained. The antenna coupler is supplied with 30 feet of

RG58 cable attached. When routing the cable to the GBR

21, observe the same precautions followed when choosing

mounting locations for the receiver and the antenna: Avoid

routing the cable near the vessel’s alternator or ignition

system components.

A ground strap is attached to the antenna coupler,

except on the GA 22/23 H-field antennas. For proper

operation, the ground strap must be connected to a vessel

(earth) ground. Do not ground the coupler to the electrical

system. If the coupler is not adequately grounded, the

beacon signal may be too weak for the GBR 21 to provide

reliable correction data.

Note:The GA 22/23 H-field antennas do not

require grounding.

1. Secure the antenna mount at the desired mounting

location.

2. Thread the antenna coupler/GA 23 onto the antenna

mount and hand tighten until snug. Do not over

tighten. Thread whip antenna onto coupler.

3. Connect the antenna coupler’s ground strap to a

vessel (earth) ground. A ground connection can

usually be made by connecting to a thru-hull fitting,

engine block, dynaplate or body of a metal vehicle.

4. Route the antenna cable to the GBR 21. Excess cable

should be coiled together and secured in an

inconspicuous location.

Modifications to the DGPS

antenna cable could result in undesired operation of

the GBR 21.

5. Connect the antenna cable to the BNC connector

on the GBR 21.

Installation

Mounting the

Antenna

The Interface Setup Page

may be selected from the

Main Menu on the GPS 12/

12XL/48. For additional

instructions, see the owner’s

manual for your GPS

receiver.

From the Interface Page,

select ‘RTCM/NMEA’ and

‘NMEA 0183 2.0’ to properly

communicate with the

GBR 21.

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