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GMR 21/41 Owner’s Manual

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arrantY

Limited Warranty

This Garmin product is warranted to be free from defects in materials or 

workmanship for one year from the date of purchase. Within this period, Garmin 

will, at its sole option, repair or replace any components that fail in normal use. 

Such repairs or replacement will be made at no charge to the customer for parts 

or labor, provided that the customer shall be responsible for any transportation 

cost. 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 EXPRESS, 

IMPLIED, OR STATUTORY, INCLUDING ANY LIABILITY ARISING 

UNDER ANY WARRANTY 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 exclusion of incidental or consequential damages, so the above 

limitations may not apply to you. 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.
To obtain warranty service, contact your local Garmin authorized dealer or call 

Garmin Product Support for shipping instructions and an RMA tracking number. 

Securely pack the unit and a copy of the original sales receipt, which is required 

as the proof of purchase for warranty repairs. Write the tracking number clearly 

on the outside of the package. Send the unit, freight charges prepaid, to any 

Garmin warranty service station. 

Online Auction Purchases:

 Products sold through online auctions are not 

eligible for rebates or other special offers from Garmin. Online auction 

confirmations are not accepted for warranty verification. To obtain warranty 

service, an original or copy of the sales receipt from the original retailer is 

required. Garmin will not replace missing components from any package 

purchased through an online auction.

International Purchases:

 A separate warranty is provided by international 

distributors for units purchased outside the United States. This warranty is 

provided by the local in-country distributor and this distributor provides local 

service for your unit. Distributor warranties are only valid in the area of intended 

distribution. Units purchased in the United States or Canada must be returned to 

the Garmin service center in the United Kingdom, the United States, Canada, or 

Taiwan for service. 
Garmin International, Inc. 

Garmin (Europe) Ltd. 

1200 East 151st Street,  

Unit 5, The Quadrangle, 

Olathe, Kansas 66062, USA 

Abbey Park Industrial Estate,  

Tel. (913) 397-8200 or 

Romsey, SO51 9DL, UK 

       (800) 800-1020 

Tel. +44 (0) 870.8501241 (outside the UK) 

Fax (913) 397-8282 

0808.2380000 (within the UK) 

 

Fax +44 (0) 870.8501251

Garmin Corporation  

No. 68, Jangshu 2nd Road,  

Shijr, Taipei County, Taiwan 

Tel. 886/2.2642.9199 

Fax 886/2.2642.9099

Summary of Contents for GMR 21/41

Page 1: ...Owner s Manual marine radar GMR 21 41...

Page 2: ...nic storage medium to be viewed and to print one copy of this manual or of any revision hereto provided that such electronic or printed copy of this manual must contain the complete text of this copyr...

Page 3: ...following sections The Introduction sections contains the Table of Contents Product Registration and Software License Agreement The Basic Operation section describes the features and operation of the...

Page 4: ...nt Information iv Basic Operation 1 Understanding Radar 1 Understanding the Radar Display 2 Radar Page 3 Configuring the Radar Page 3 Using the Radar Adjustment Menu 4 Map Page Radar Overlay 9 Radar T...

Page 5: ...1 YOU AGREE TO BE BOUND BY THE TERMS AND CONDITIONS OF THE FOLLOWING SOFTWARE LICENSE AGREEMENT PLEASE READ THIS AGREEMENT CAREFULLY Garmin grants you a limited license to use the software embedded in...

Page 6: ...omponents contain chemicals known to the State of California to cause cancer birth defects or reproductive harm This Notice is provided in accordance with California s Proposition 65 See www garmin co...

Page 7: ...n the middle of the Radar Page When the countdown reaches 0 zero the Hold FCTN to transmit message appears As a safety feature the radar enters Standby Mode after it warms up This gives the operator a...

Page 8: ...g separation Soft keys Using Range Rings Use the Range Rings to quickly determine the distance to a target The lower right corner of the screen contains two scales The scale value represents the dista...

Page 9: ...new radar is detected the Radar Page is added to the page sequence If the Radar Page is not available press and hold ADJ MENU to open the Main Menu Highlight the System tab and select Radar from the S...

Page 10: ...tter Rain Clutter FTC Zoom Target Expansion Trails Guard Zone VRM EBL MARPA and Hide Show Navigation Features To select an adjustment option from the Radar Page 1 Press ADJ MENU to open the Radar adju...

Page 11: ...ontrols unwanted screen clutter caused by rain at close ranges use the slider to select 1 100 FTC Fast Time Constant FTC controls unwanted screen clutter caused by rain at a distance The Fast Time Con...

Page 12: ...istory trail Off Short Medium or Long Trails On Trails Off Guard Zone A Guard Zone is a user defined area of protection If a target enters the Guard Zone an alarm sounds You can define two Guard Zones...

Page 13: ...r VRM EBL 2 On the Radar adjustment menu highlight Show VRM EBL 1 or VRM EBL 2 and then press ENTER You can adjust the diameter of the VRM and the angle of the EBL To adjust the VRM EBL 1 Highlight Ad...

Page 14: ...relies on a Heading Sensor to provide accurate own vessel heading information Accurate heading data enhances MARPA s performance Each target being tracked by MARPA is represented by a symbol The symb...

Page 15: ...g to remove the radar from Standby Mode After the radar completes Spinning Up the radar begins transmitting Map Page Radar Overlay Radar information can be shown as an overlay on the Map Page When you...

Page 16: ...p or Course Up North Indicator toggles the north indicator arrow on or off Timed Transmit used to save power usually while at anchor When Timed Transmit is On the radar uses the settings in Timed Tran...

Page 17: ...d Auto Shift adjusts your location on the screen according to the current speed Rings toggles the radar rings on or off Background sets the background color for the Radar Page Available options are Bl...

Page 18: ...can be turned On or Off Own Vessel Safe Zone is a circular area defined by a range setting that is centered on your own vessel If a target enters the defined area an alarm is sounded The Safe Zone ca...

Page 19: ...1 Highlight the AFC Mode field and press ENTER 2 Select Manual and press ENTER 3 Highlight the Freq button to the right of the AFC Mode field and press ENTER NOTE The Freq button is available only ava...

Page 20: ...rizontal beamwidth of 3 6 nominal vertical beamwidth of 25 nominal Wind Velocity Wind speed up to 100 kts Antenna RPMs 24 rpm Range Ring Accuracy 20 meters or 1 5 of range scale whichever is greater B...

Page 21: ...and G Latvia I Norway I Lithuania G Switzerland I I requires an individual license for operation G can be operated under a general license or license exemption This product may require licensing in yo...

Page 22: ...t your local Garmin authorized dealer or call Garmin Product Support for shipping instructions and an RMA tracking number Securely pack the unit and a copy of the original sales receipt which is requi...

Page 23: ...erference will not occur in a particular installation If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment off and on the...

Page 24: ...ar Page 3 7 manually adjust the radar 13 MARPA 4 8 9 list 9 target 8 MARPA sub tab 12 N navigation features 4 11 O orientation 10 Own Vessel Safe Zone 12 P product registration iii R radar overlay 9 R...

Page 25: ......

Page 26: ...t www garmin com 2006 Garmin Ltd or its subsidiaries Garmin International Inc 1200 East 151st Street Olathe Kansas 66062 USA Garmin Europe Ltd Unit 5 The Quadrangle Abbey Park Industrial Estate Romsey...

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