Garmin GNX 20 Marine Instrument Support Question
Garmin GNX 20 Marine Instrument Support Question
Find answers below for this question about Garmin GNX 20 Marine Instrument.Need a Garmin GNX 20 Marine Instrument manual? We have 5 online manuals for this item!
Question posted by avola on May 28th, 2023
Shows Depth Occasionally.
All connections are clean and tight. Shows - - at the dock. Took it out and it started showing depth again. Calm waters. Then it stopped again, showed depth again and now - - any ideas
Current Answers
Answer #1: Posted by SonuKumar on May 28th, 2023 10:59 PM
SonuKumar
Member since:
May 9th, 2021 Points: 16,620,300
Member since:
May 9th, 2021 Points: 16,620,300
If your Garmin GNX 20 marine instrument occasionally shows depth readings or displays inconsistent depth information, there are a few possible reasons for this issue. Here are some troubleshooting steps you can follow:
- Check the transducer: The depth readings on your Garmin GNX 20 are reliant on the performance of the transducer. Ensure that the transducer is securely installed and positioned correctly in the water. Check for any damage or fouling on the transducer that could affect its operation. Clean the transducer if necessary, following the manufacturer's instructions.
- Verify the transducer connection: Check the connection between the transducer and the GNX 20 instrument. Make sure the connectors are clean and properly seated. Inspect the wiring for any damage or loose connections. Consider disconnecting and reconnecting the transducer to ensure a secure connection.
- Check the settings: Review the settings on your GNX 20 instrument to ensure they are configured correctly for depth measurement. Verify that the correct transducer type and depth unit of measurement are selected. Refer to the user manual or contact Garmin customer support for guidance on the proper settings.
- Interference or obstructions: Interference from other electronics or structures in the boat can sometimes affect the depth readings. Check for nearby electronics that could be causing interference, such as fishfinders, sonar units, or powerful transmitters. Ensure that the transducer is positioned away from any obstructions that could disrupt the sonar signal, such as through-hull fittings or hull irregularities.
- Software update: Ensure that your Garmin GNX 20 instrument has the latest software version installed. Periodic software updates can address known issues and improve the performance and reliability of the device. Visit the Garmin website and follow the instructions to update the software if necessary.
If the issue persists after attempting these troubleshooting steps, it may be beneficial to contact Garmin customer support or consult a professional marine electronics technician. They can provide further assistance and guidance based on the specific details of your Garmin GNX 20 instrument and help diagnose any underlying problems.
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Regards,
Sonu
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Related Garmin GNX 20 Marine Instrument Manual Pages
Flat Mount Template - Page 2
GNX™, GMI™, and GHC™ Flat Mount Template
1/4 in. (6 mm)
8.0 mm 0.315 in.
4.8 mm 0.19 in Taiwan January 2014
190-01659-04_0A
Printed in .
Owner s Manual - Page 1
GNX™ 20/21
Owner's Manual
February 2014
190-01659-00_0B
Printed in Taiwan
Owner s Manual - Page 2
... of such changes or improvements. GNX™ 20/21 is a trademark of Garmin Ltd. or its subsidiaries. This trademark may not be used without obligation to www.garmin.com for current updates and supplemental information concerning the use of this manual without the express permission of the National Marine Electronics Association.
Go to notify...
Owner s Manual - Page 3
... the Race Timer 1
Profiles 1 Selecting a Profile 1 Restoring Profiles to their Default Settings 1
Instrument Pages 1 Cycling Through Instrument Pages 1 Configuring the Data Fields 1 Changing the Layout of Instrument Pages 1 Adding an Instrument Page 2 Removing an Instrument Page 2
Device Configuration 2 Resolving a Combined Network 2 System Settings 2 Display Settings 2 Viewing and...
Owner s Manual - Page 5
..., distance to view the power off settings. The GNX 20 Marine Instrument with Standard LCD or the GNX 21 Marine Instrument with the race timer active, select >
CONFIGURE DATA FIELDS > RACE TIMER SETTINGS. 2 Select an option:
• When the device is in prerace mode and is stopped or running, select RESET, START, or SETUP.
• When the device is...
Owner s Manual - Page 6
...;), select
GRID. Display Settings
Select > SETUP > DISPLAY. NETWORK SHARING: Shares color and backlight settings with instruments on which a reading appears, select POSITION FORMAT.
• To change the position format or the map datum unless you are connected to sound only when alarms are
triggered, select ALARMS ONLY. • To set grid north...
Owner s Manual - Page 7
... direction from your current location to the NMEA certified display device, such as the GNX 20/21. DIS: The distance traveled for all trips. GWS: The speed of humidity...start of the vessel based on the sensors you must be connected to north. BAR: The calibrated current pressure. DPT: The depth of your display depends on the current tack direction. ELV: The altitude of the water...
Owner s Manual - Page 8
Index
A automatic scrolling 1 B beeper 2 D data 2 data fields 3 device, registration 3 display settings 2 H heading, type 2 I instruments 1
adding pages 2 configuration 1 removing pages 2 N NMEA 0183 3 NMEA 2000 2 P pages 1 position format 2 product registration 3 profiles 1 restoring 1 selecting 1 R race timer 1 registering the device 3 S settings 2 system information 2 T ...
Owner s Manual - Page 10
... 275 44 97 + 46 7744 52020
+47 815 69 555 (+35) 1214 447 460 0861 GARMIN (427 646) +27 (0)11 251 9999 +49 (0)180 6 427646 20 ct./Anruf. d. deutschen Festnetz, Mobilfunk max. 60 ct./Anruf
Garmin International, Inc. 1200 East 151st Street
Olathe, Kansas 66062, USA
Garmin (Europe) Ltd. or its...
Installation Instructions - Page 1
...shows information such as speed, heading, and water depth when connected to extreme temperatures or conditions.
Mounting Considerations
NOTICE This device should be mounted in fiberglass, when drilling the four pilot holes, it to the location where you plan to mount the marine instrument...mounting location should allow room for the GNX 20 Marine Instrument with Inverted LCD. If you plan ...
Installation Instructions - Page 2
... supplied screws.
This wire is used only when connecting the marine instrument to the marine instrument and data from NMEA 2000-compatible devices such as advised in the notice. 15Snap the bezel into place.
À
Connection Considerations
The marine instrument connects to power and to a NMEA 2000 network. In addition, the marine instrument can receive NMEA 0183 data from the NMEA...
Installation Instructions - Page 3
... time
127245 Rudder
127250 Vessel heading
127508 Battery status
128259 Speed: Water referenced
128267 Water depth
129025 Position: Rapid update
129026 COG and SOG: Rapid update
129029... pressure
NMEA 0183 Information When connected to an optional NMEA 0183 compatible device, the instrument can receive these NMEA 0183 sentences.
3 Item Description Marine instrument with a NMEA data cable ...
Installation Instructions - Page 4
...Bearing and distance to waypoint Depth below transducer Datum being used without the express permission of Garmin.
GNX™ 20/21 is a trademark of the National Marine Electronics Association.
© 2014 Garmin Ltd. or its subsidiaries, registered in view Heading, deviation, and variation Heading, magnetic Heading, true Meteorological composite Water temperature Wind direction and...
Flush Mount Template - Page 2
GNX™, GMI™, and GHC™ Flush Mount Template
7/64 in. 2.8 mm
3 /17 32 in. 90 mm
January 2014
2 /23 64 in. 60 mm
190-01659-03_0A
Printed in Taiwan
Declaration of Conformity - Page 1
..., Southampton, Hampshire, SO40 9LR, U.K. Emissions / Immunity
IEC 60950-1:2005 (2nd Edition)/Am 1:2009 EN 60950-1:2006+A11:2009+A1:2010+A12:2011 Safety of Equipment:
Marine instrument
Model Number(s):
GNX20 GNX21
The undersigned does hereby declare that the equipment complies with the above Directives
Jamie Wiltshire Quality Supervisor Garmin (Europe) Ltd.
Type...
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