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GPSMAP 400/500 Series Installation Instructions 

11

Sonar

Power: 1 kW Transducer, 1,000 W (RMS),

 

8,000 W (peak to peak); (1 kW transducers are supported by the 

GPSMAP 525s/526s/535s/536s/545s/546s/555s/556s units only.) 

Dual Frequency, 500 W (RMS), 4,000 W (peak to peak); 

 

Dual Beam, 400 W (RMS), 3,200 W (peak to peak)

Frequency: 50/200 kHz (dual frequency and 1 kW), 80/200 kHz (dual 

beam)

Depth: 2,500 ft. (762 m) (1 kW), 1,500 ft (457 m) (dual frequency),

 

 900 ft (274 m) (dual beam) - Depth capacity is dependent on 

water salinity, bottom type, and other water conditions.

 

Communication

NMeA 2000 PGN Information (only Applicable to NMeA 2000-compatible chartplotters):

Receive

Transmit

059392

ISO Acknowledgment 

059392

ISO Acknowledgment

059904

ISO Request 

059904

ISO Request

060928

ISO Address Claim 

060928

ISO Address Claim

126208

NMEA - Command/Request/Acknowledge Group Function

126208

NMEA - Command/Request/Acknowledge Group Function

126464

Transmit/Receive PGN List Group Function

126464

Transmit/Receive PGN List Group Function

126996

Product Information

126996

Product Information

127250

Vessel Heading

127250

Water Depth

127488

Engine Parameters - Rapid Update

128259

Speed - Water Referenced

127489

Engine Parameters - Dynamic

128267

Water Depth

127505

Fluid Level

129025

Position, Rapid Update

128259

Speed - Water Referenced

129026

COG/SOG Rapid Update

128267

Water Depth

129029

GNSS - Position Data

129038

AIS Class A Position Report

129283

Cross Track Error

129039

AIS Class B Position Report

129284

Navigation Data

129040

AIS Class B Extended Position Report

129285

Navigation - Route/WP information

129794

AIS Class A Static and Voyage Related Data

129539

GNSS DOPs

129799

Radio Frequency/Mode/Power

129540

GNSS Sats in View

129808

DSC Call Information

130306

Wind Data

130306

Wind Data

 

130310

Environmental Parameters

130311

Environmental Parameters (Obsolete)

Compatible GPSMAP 400/500 series chartplotters 

are NMEA 2000 certified.

130312

Temperature

130313

Humidity

130314

Actual Pressure

NMeA 0183, Version 3.01 Sentences:

 SDDBT, SDDPT, SDMTW, SDVHW, SDWPL

You can purchase complete information about National Marine Electronics Association (NMEA) format and sentences from: 

NMEA 

Seven Riggs Avenue 

Severna Park, MD 21146 USA

 

www.nmea.org

Summary of Contents for GPSMAP 420

Page 1: ...ing always check the opposite side of the drilling or cutting surface To install and use your chartplotter 1 Select a mounting location page 2 2 Mount the chartplotter page 2 3 Install the transducer...

Page 2: ...unting the Chartplotter Use the included bracket to surface mount the chartplotter You will need the following tools and fasteners Drill Phillips or flat screwdriver Three 8 4 mm pan head machine bolt...

Page 3: ...If the transducer lead is too short extension cables are available from your Garmin dealer Assembling the Transducer 1 Insert the rubber washer H and the plastic spacer G into the transducer at the sa...

Page 4: ...distance between the transducer and the top of the transom 6 Mark the location Drill a 1 8 in 3 2 mm pilot hole approximately 3 8 in 9 5 mm deep 7 Attach the cable clamp using one of the 4 12 mm scre...

Page 5: ...GPSMAP 525 535 545 555 526 536 546 556 or with non s models compatible with a GSD 22 When installing a transducer consider the following The hull must be composed of solid fiberglass without air bubb...

Page 6: ...ss Do not cut the transducer cable because this voids your warranty Notice The maximum input voltage is 32 Vdc Do not exceed this voltage because this can damage the chartplotter and void the warranty...

Page 7: ...ce 3 Repeat step 2 using the grey and violet wires for an additional NMEA 0183 device 4 Set the serial port s on the chartplotter to use NMEA 0183 data standard or high speed See the GPSMAP 400 500 Se...

Page 8: ...n existing NMEA 2000 network on your boat you will need to build one See www garmin com for more information NOTE NMEA 2000 compatible GPSMAP 400 500 series chartplotters are not packaged with NMEA 20...

Page 9: ...6 GPSMAP 420 430 431 440 and 450 GPSMAP 430x and 440x GPSMAP 421 441 and 451 GPSMAP 521 541 551 GPSMAP 530 535 540 and 545 Testing the Installation To turn on your chartplotter for the first time pres...

Page 10: ...l 12 7 cm Full VGA display with adjustable brightness 640 480 pixels capable of 4 096 colors Case Fully gasketed high impact plastic alloy waterproof to IEC 529 IPX7 standards Temp Range From 5 F to 1...

Page 11: ...roduct Information 126996 Product Information 127250 Vessel Heading 127250 Water Depth 127488 Engine Parameters Rapid Update 128259 Speed Water Referenced 127489 Engine Parameters Dynamic 128267 Water...

Page 12: ...py 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 copyright notice and provided further that any unauthori...

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