Simrad HS70 User manual

HS70

User Manual

ENGLISH www.simrad-yachting.com

Preface

Disclaimer

As Navico is continuously improving this product, we retain the right to make changes to the product at any time which may not be reflected in this version of the manual. Please contact your nearest distributor if you require any further assistance.

It is the owner’s sole responsibility to install and use the instrument and transducers in a manner that will not cause accidents, personal injury or property damage. The user of this product is solely responsible for observing safe boating practices.

NAVICO HOLDING AS AND ITS SUBSIDIARIES, BRANCHES AND AFFILIATES DISCLAIM ALL

LIABILITY FOR ANY USE OF THIS PRODUCT IN A WAY THAT MAY CAUSE ACCIDENTS, DAMAGE

OR THAT MAY VIOLATE THE LAW.

Governing Language: This statement, any instruction manuals, user guides and other information relating to the product (Documentation) may be translated to, or has been translated from, another language (Translation). In the event of any conflict between any

Translation of the Documentation, the English language version of the Documentation will be the official version of the Documentation.

This manual represents the product as at the time of printing. Navico Holding AS and its subsidiaries, branches and affiliates reserve the right to make changes to specifications without notice.

Compliance

The HS70 complies with the following regulations:

• FCC Part 15, Subpart B

• IEC 60945 (CE)

For further compliance information please refer to our website: www.simrad-yachting.com

FCC Statement

This device complies with part 15 of the FCC Rules. Operation is subject to the following two 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.

¼

Note:

This equipment has been tested and complies with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a normal installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. This device must accept any interference received, including interference that may cause undesired operation.

If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna

• Increase the separation between the equipment and receiver

• Connect the equipment into an output on a circuit diff erent from that to which the receiver is connected

• Consult the dealer or an experienced technician for help

¼

Note:

A shielded cable must be used when connecting a peripheral to the serial ports.

Changes or modifi cations not expressly approved by the manufacturer could void the user’s authority to operate the equipment.

Copyright

Copyright © 2011 Navico Holding AS.

Preface | HS70 User Manual

| i

Warranty

The warranty card is supplied as a separate document.

In case of any queries, refer to the our website: www.simrad-yachting.com

About this manual

This manual is a reference guide for installing and using the Simrad HS70.

Important text that requires special attention from the reader is emphasized as follows:

¼

Note:

Used to draw the reader’s attention to a comment or some important information.

Warning:

Used when it is necessary to warn personnel that they should proceed carefully to prevent risk of injury and/or damage to equipment/personnel.

ii |

Preface | HS70 User Manual

Contents

1 Introduction

1 Overview

1 Parts

2 Installation

2 Mounting Location

2 Mounting Orientation

3 Mounting Options

5 Connecting the cable

5 Ports

7 Default Parameters

8 Operation

8 GPS Overview

8 HS70 Overview

10 Troubleshooting

11 Parts list

11 Included in package

11 Assessories

11 Spare parts

12 Specifications

12 TGPS sensor specifications

12 Communication specifications

13 Power specifications

13 Mechanical specifications

13 Environmental specifications

14 HS70 Dimensions

15 PGNs with the HS70 in NMEA 2000 mode

18 NMEA 0183 messages

Contents | HS70 User Manual

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iv |

Contents | HS70 User Manual

2

Introduction

Overview

The HS70 is a complete GPS compass and positioning system in a single enclosure that requires only one power/data cable connection. With its NMEA 2000 and NMEA 0183 support and ease of installation, the HS70 is the perfect solution for marine applications.

The HS70 is an integrated system that houses the following:

•

Dual integrated GPS antennas

•

Power supply

•

Single axis gyro

•

Tilt sensor on each axis (X and Y axes)

•

Standard NMEA 2000 port (cable to be ordered separately)

•

Standard NMEA 0183 port (cable to be ordered separately)

The gyro and tilt sensors are present to improve system performance and to provide backup heading information in the event that a GPS heading is not available due to signal blockage.

The HS70’s GPS antennas are separated by 27.5 cm between their phase centers, resulting in better than 0.75° rms heading performance. The HS70 provides heading and positioning updates of up to 20 Hz and delivers positioning accuracy of better than 1.0 m 95% of the time when using differential GPS corrections from Space Based Augmentation Systems (SBAS).

Parts

An HS70 installation requires the following parts:

Part Name

HS70 receiver

NMEA 2000 or NMEA 0183 cable (not included, must be ordered separately)

4 fastening bolts and washers, M8 for fixed or pole mount (not included)

Plastic wraps for cable securing (not included) -

1

4

Qty

1

Introduction | HS70 User Manual

| 1

2 |

1.5 m (4.9 ft radius at top

1.0 m (3.3 ft) radius at base

P

-H

2

+R

-P

-R

+P

S

Installation

Mounting Location

This section provides information on determining the best location for the HS70.

GPS Reception

When considering where to mount the HS70, consider the following GPS reception recommendations:

•

Consider GPS (and hence SBAS) reception, ensuring there is a clear view of the sky available to the HS70 so the GPS and SBAS satellites are not masked by obstructions that may reduce system performance

•

Since the HS70 computes a position based on the internal primary GPS antenna element, mount the HS70 where you desire a position with respect to the primary GPS antenna

(located on the end opposite the recessed arrow on the underside of the enclosure)

•

Locate any transmitting antennas away from the HS70 (refer illustration below) to ensure tracking performance is not compromised, giving you the best performance possible

•

Make sure there is enough cable length to route into the vessel to reach a breakout box, terminal strip or NMEA 2000 T-connector

•

Do not locate the antenna where environmental conditions exceed those specified in

“Specifications” on page 12.

VHF Interference

VHF interference from such devices as cellular phones and radio transmitters may interfere with GPS operation. For example, if installing the HS70 near marine radios consider the following:

•

VHF marine radio working frequencies (Channels 1 to 28 and 84 to 88) range from 156.05 to

157.40 MHz. The L1 GPS working center frequency is 1575.42 MHz. The bandwidth is +/- 2 MHz to +/- 10 MHz, which is dependent on the GPS antenna and receiver design

•

VHF marine radios emit strong harmonics. The 10th harmonic of VHF radio, in some channels, falls into the GPS working frequency band, which may cause the SNR of GPS to degrade significantly

•

The radiated harmonic signal strength of different brands/models varies

•

Follow VHF radio manufacturers’ recommendations on how to mount their radios and what devices to keep a safe distance away

•

Handheld 5 W VHF radios may not provide suitable filtering and may interfere with the HS70’s operation if too close

Ensure there are no nearby devices that may cause VHF interference. Use minimum distances from nearby VHF antenna as shown on the illustration.

+H

Mounting Orientation

The HS70 outputs heading, pitch, and roll readings. However, the relation of the antennas to the boat’s axis determines whether you will need to enter a heading offset. The primary antenna is used for positioning and the primary and secondary antennas, working in conjunction, output heading, pitch, and roll values.

Mount the HS70 parallel to, and along the centerline of, the axis of the boat. This provides a true heading. In this orientation:

•

You can enter a heading offset in a Simrad compatible head unit (AP24, AP28, AP70, AP80, IS20

Graphic/Combi, NSE, NSO, NSS) to calibrate the physical heading to the true heading of the vessel

•

You will have an offset in the pitch/roll output if the unit is not installed in a horizontal plane

The figure shows recommended orientation and resulting signs of heading (H), pitch (P) and roll (R) values.

Installation | HS70 User Manual

HS70 Alignment

The top of the HS70 enclosure incorporates sight design features to help you align the enclosure with respect to your vessel.

To use the sights, center the small post on the opposite side of the enclosure from you, within the channel made in the medallion located in the center of the enclosure top as shown in the figures below.

Alignment accuracy when looking through the long site is approximately +/- 1°

Alignment through the short site is approximately +/- 2.5°

Mounting Options

The HS70 allows for two different mounting options: fixed mount and pole mount. Refer

“HS70 Dimensions” on page 14.

•

Flush mount - The bottom of the HS70 contains four M8 holes for flush mounting the unit to a flat surface

•

Pole mount - The bottom of the HS70 contains a mounting hole (1” thread, 0.9” depth) for easy pole mounting. Hand tighten until snug (do not overtighten). The set screws on the long sides of the base allow you to secure the HS70 in place (3/16” Allen wrench not included)

¼

Note:

Mounting accessories not included.

Cable mounting considerations

Before mounting the HS70 consider the following regarding power/data cable routing:

•

Cable must reach an appropriate power source

•

Cable may connect to a data storage device, computer, or other device that accepts GPS data

•

Avoid running the cable in areas of excessive heat

•

Keep cable away from corrosive chemicals

•

Do not run the cable through door or window jams

•

Keep cable away from rotating machinery

•

Do not crimp or excessively bend the cable

•

Avoid placing tension on the cable

•

Remove unwanted slack from the cable at the HS70 end

•

Secure along the cable route using plastic wraps

Warning:

Improperly installed cable near machinery can be dangerous.

Fixed Mount

The bottom of the HS70 contains four holes for flush mounting the unit to a flat surface. See figure below. The flat surface may be something you fabricate per your installation, an off-theshelf item (such as a radar mounting plate), or an existing surface on your vessel.

¼

Note:

HS70 does not include the mounting surface hardware. You must supply the appropriate fastening hardware required to complete the installation of the HS70.

Installation | HS70 User Manual

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4 |

¼

Note:

You do not necessarily need to orient the antenna precisely as you can enter a software offset to accommodate for any offset in heading measurement due to installation.

Before fix mounting the HS70

•

Choose a location that meets the mounting location requirements

•

Use the mounting template, mark and drill the mounting holes as necessary for the mounting surface

•

Attach the cable to the HS70 and secure the cable

Fix mounting the HS70

1.

Mark the mounting hole centers on the mounting surface.

2.

Place the HS70 over the marks to ensure the planned hole centers align with the true hole centers

(adjusting as necessary).

3.

Use a center punch to mark the hole centers.

4.

Drill the mounting holes with a 9 mm bit appropriate for the surface.

5.

Place the HS70 over the mounting holes and insert the mounting screws through the bottom of the mounting surface and into the HS70.

Warning:

When installing the HS70, hand tighten only. Damage resulting from overtightening is not covered by the warranty.

Pole Mount

Keep the following in mind when using a pole mount:

•

Mounting hole is 1” thread, 0.9” depth

•

Hand tighten until snug (do not overtighten) while ensuring correct orientation

•

Use the set screws on the long sides of the base to secure the HS70 in place (3/16” Allen wrench not included)

Warning:

Overtightening may damage the system. This is not covered under warranty.

Before pole mounting the HS70

•

Install the HS70 parallel with the vessel’s axis.

•

Choose a location that meets the mounting location requirements.

•

Attach the cable to the HS70 and secure the cable.

Installation | HS70 User Manual

Connecting the cable

1.

Align the cable connector keyway or the NMEA 2000 adapter with the HS70 connector key

2.

Rotate the cable ring clockwise until it locks. The locking action is firm, but you will feel a positive “click” when it has locked

3.

Securing the cable

Ports

NMEA 2000 Port

Powering the HS70 when used in a NMEA 2000 installation

To power the unit via NMEA 2000 connection, follow the standard procedure for powering of a NMEA 2000 network.

Connecting the HS70 to External Devices

For connecting NMEA 2000 devices, plug the serial-to-NMEA 2000 adapter into the HS70 and then attach a standard NMEA 2000 dropline cable to the adapter.

Insert the 12-pin connector of the adapter into the male end of the 12-pin connector on the

HS70 by aligning the keys. Secure the adapter to the unit using the supplied screws (machine,

8-32, ½”, PPHC, SS) and washer (washer, flat, #8, SS).

Refer “PGNs with the HS70 in NMEA 2000 mode” on page 15.

NMEA 0183

The HS70 offers position, heading, rate of turn, heave, time COG and SOG data, via NMEA

0183 port. In addition to outputting data, these ports are used for firmware upgrades.

Refer “NMEA 0183 messages” on page 18.

Powering the HS70 when used in a NMEA 0183 installation

For best performance use a clean and continuous power supply. The HS70 power supply features reverse polarity protection but will not operate with reverse polarity.

See “Power specifications” on page 13 for complete power specifications.

Before you power up the HS70 you must terminate the wires of the power cable as required.

There are a variety of power connectors and terminals on the market from which to choose, depending on your specific requirements.

Warning:

Do not apply a voltage higher than 36 VDC. This will damage the receiver and void the warranty.

To interface the HS70 power cable to the power source:

•

Connect the red wire of the cable’s power input to DC positive (+)

•

Connect the black wire of the cable’s power input to DC negative (-)

The HS70 will start when an acceptable voltage is applied to the power leads of the extension cable.

The HS70’s power supply is isolated from the communication lines and the PC-ABS plastic enclosure isolates the electronics mechanically from the vessel (addressing the issue of vessel hull electrolysis).

Installation | HS70 User Manual

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Power/Data Cable Considerations

The HS70 uses a single 15 m (49 ft) cable for power and data input/output.

6 |

The receiver end of the cable is terminated with an environmentally sealed 12-pin connection while the opposite end is unterminated and requires field stripping and tinning.

Depending on the application and installation needs, you may need to shorten this cable.

However, if you require a longer cable run than 15 m, you can bring the cable into a break-out box that incorporates terminal strips, within the vessel.

When lengthening the cable keep the following in mind:

•

To lengthen the serial lines inside the vessel, use 20-gauge twisted pairs and minimize the additional wire length.

•

When lengthening the power input leads to the HS70, ensure the additional voltage drop is small enough that your power system can continue to power the system above the minimum voltage of the system. Wire of 18-gauge or larger should also be used.

•

Minimize RS-232 cable length to ensure reliable communication

Power/Data Cable Pinout Specifications

Pin

Function

1

2

Port C, RS-232 female DB9 pin 2, device out

Port C, RS-232 female DB9 pin 3, device in

3 N/C

4 N/C

5 Power input

6 N/C

7 Signal ground

8

Port A, RS-232 female DB9 pin 3, device in

9

Port A, RS-232 female DB9 pin 2, device out

10 Power ground

11 CH_GND

12 N/C

Wire

Color

White

Green

N/C

N/C

Red

N/C

Yellow

Brown

Blue

Black

Drain

N/C

Comments

NMEA 2000 only

NMEA 0183 only

Installation | HS70 User Manual

Default Parameters

The table below provides details on the default port settings, available baud rates, differential age, elevation mask, and default differential mode.

Port

Port A

(NMEA 0183)

Port C

(RS-232)

Power

RED (+)

BLK (-)

Baud Rate

4800

57600

NMEA Messages

GGA, HD, HEV, ROT, VTG, ZDA

None, used for serial to NMEA 2000 adapter

6 - 36 V DC

Installation | HS70 User Manual

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3

Operation

GPS Overview

For your convenience, both the GPS and SBAS operation of the HS70 features automatic operational algorithms. When powered for the first time, the HS70 performs a “cold start,” which involves acquiring the available GPS satellites in view and the SBAS differential service.

GPS Operation

The GPS receiver is always operating, regardless of the DGPS mode of operation. The following sections describe the general operation of the HS70’s internal GPS receiver.

¼

Note:

Differential source and status have no impact on heading, pitch, or roll. They only have an impact on positioning and heave.

Automatic Tracking

The HS70’s internal GPS receiver automatically searches for GPS satellites, acquires the signals, and manages the navigation information required for positioning and tracking.

Receiver Performance

The HS70 works by finding four or more GPS satellites in the visible sky. It uses information from the satellites to compute a position within 4.0 m. Since there is some error in the

GPS data calculations, the HS70 also tracks a differential correction. The HS70 uses these corrections to improve its position accuracy to better than 1.0 m.

There are two main aspects of GPS receiver performance:

•

Satellite acquisition

•

Positioning and heading calculation

When the HS70 is properly positioned, the satellites transmit coded information to the antennas on a specific frequency. This allows the receiver to calculate a range to each satellite from both antennas. GPS is essentially a timing system. The ranges are calculated by timing how long it takes for the signal to reach the GPS antenna. The GPS receiver uses a complex algorithm incorporating satellite locations and ranges to each satellite to calculate the geographic location and heading. Reception of any four or more GPS signals allows the receiver to compute three-dimensional coordinates and a valid heading.

Differential Operation

The purpose of differential GPS (DGPS) is to remove the effects of atmospheric errors, timing errors, and satellite orbit errors, while enhancing system integrity. Autonomous positioning capabilities of the HS70 will result in positioning accuracies of 4.0 m 95% of the time. In order to improve positioning quality to better than 1.0 m 95%, the HS70 is able to use differential corrections received through the internal SBAS demodulator.

Automatic SBAS Tracking

The HS70 automatically scans and tracks SBAS signals without the need to tune the receiver.

The HS70 features two-channel tracking that provides an enhanced ability to maintain a lock on an SBAS satellite when more than one satellite is in view. This redundant tracking approach results in more consistent tracking of an SBAS signal in areas where signal blockage of a satellite is possible.

HS70 Overview

The HS70 provides accurate and reliable heading and position information at high update rates. To accomplish this task, the HS70 uses a high performance GPS receiver and two antennas for GPS signal processing. One antenna is designated as the primary GPS antenna and the other is the secondary GPS antenna. Positions computed by the HS70 are referenced to the phase center of the primary GPS antenna. Heading data references the vector formed from the primary GPS antenna phase center to the secondary GPS antenna phase center.

Operation | HS70 User Manual

The heading arrow located on the bottom of the HS70 enclosure defines system orientation.

The arrow points in the direction the heading measurement is computed (when the antenna is installed parallel to the fore-aft line of the vessel). The secondary antenna is directly above the arrow.

¼

Note:

The HS70 moving base station algorithm only uses GPS to calculate heading. Differential corrections are not used in this calculation and will not affect heading accuracy.

Supplemental Sensors

The HS70 has an integrated gyro and two tilt sensors. The gyro and tilt sensors are enabled by default. Each supplemental sensor may be individually enabled or disabled. Both supplemental sensors are mounted on the printed circuit board inside the HS70.

The sensors act to reduce the startup and reacquisition times. This improves the reliability and accuracy of selecting the correct heading solution by eliminating other possible, erroneous solutions. The table below provides a sensor operation summary.

Feature

Heading

Heave

Pitch

Roll

Normal Operation

GPS

GPS

GPS

Inertial sensor

Coasting (no GPS)

Gyro

None

Inertial sensor

Inertial sensor

Operation | HS70 User Manual

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4

Troubleshooting

Sympton

Receiver fails to power

No data from HS70

Random data from

HS70

No GPS lock

No SBAS lock

No heading or incorrect heading value

Possible Solution

•

Verify polarity of power leads

•

Check integrity of power cable connectors

•

Check power input voltage (6 to 36 VDC)

•

Check current restrictions imposed by power source (minimum available should be > 1.0 A)

•

Check receiver power status to ensure the receiver is powered

(an ammeter can be used for this)

•

Ensure the baud rate (4800) of the HS70 matches that of the receiving device

•

Check integrity and connectivity of power and data cable connections

•

Ensure the baud rate of the HS70 matches that of the remote device

•

Verify the HS70 has a clear view of the sky

•

Verify the lock status of GPS satellites in the Simrad compatible head unit (refer separate documentation)

•

Verify the HS70 has a clear view of the sky

Note:

SBAS lock is only possible if you are in an appropriate SBAS region; currently, there is limited SBAS availability in the southern hemisphere.

•

Heading is from primary GPS antenna to secondary GPS antenna, so the arrow on the underside of the HS70 should be directed to the bow side

•

Monitor the number of satellites and SNR values for both antennas in the Simrad head unit — at least four satellites should have strong SNR values

10 |

Troubleshooting | HS70 User Manual

5

Parts list

Included in package

Description

HS70 Receiver

Serial to NMEA 2000 adapter

User manual

Mounting template

Assessories

Part no Description

Refer Simrad price list NMEA 2000 cables

000-10640-001 HS70 Power/NMEA 0183 cable, 15 m (49,2 ft)

Spare parts

There are no spare parts available for the HS70.

Parts list | HS70 User Manual

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6

Specifications

TGPS sensor specifications

Item

Receiver type

Channels

SBAS tracking

Update rate

Horizontal accuracy

Heading accuracy

Heave accuracy

Pitch accuracy

Roll accuracy

Rate of turn

Cold start

Warm start

Hot start

Heading fix

Compass safe distance

Maximum speed

Maximum altitude

Specification

L1, C/A code with carrier phase smoothing

Two 12-channel, parallel tracking

(Two 10-channel when tracking SBAS)

2-channel, parallel tracking

Standard 10 Hz, optional 20 Hz (position and heading)

< 1.0 m 95% confidence (DGPS

1

)

< 4.0 m 95% confidence (autonomous, no SA

2

)

< 0.75° rms

Normal operation: GPS

Coasting (no GPS): Gyro

< 30 cm rms

5

Normal operation: GPS

Coasting (no GPS): None

< 1.5° rms

Normal operation: GPS

Coasting (no GPS): Inertial sensor

< 1.5° rms using accelerometer

Normal operation: Inertial sensor

Coasting (no GPS): Inertial sensor

90°/s maximum

< 60 s typical (no almanac or RTC)

< 20 s typical (almanac and RTC)

< 1 s typical (almanac, RTC, and position)

< 10 s typical (valid position)

30 cm (11.8 in)

4

1,850 kph (999 kts)

18,288 m (60,000 ft)

Communication specifications

Item

Serial ports

Specification

2 full-duplex RS-232

Baud rates

4800, 9600, 19200, 38400, 57600, 115200 (with programming cable - Simrad dealers only)

Correction I/O protocol RTCM SC-104

Data I/O protocol NMEA 0183, NMEA 2000

12 |

Specifications | HS70 User Manual

Power specifications

Item

Input voltage

Specification

NMEA 0183: 6 to 36 VDC

NMEA 2000: 12V DC

Power consumption ~ 3 W nominal

Current consumption 320 mA @ 9 VDC

240 mA @ 12 VDC (NMEA 2000)

180 mA @ 16 VDC

Power isolation

Reverse polarity protection

Isolated to enclosure

Yes

Mechanical specifications

Item

Enclosure

Dimensions

(not including mounts)

Weight

Specification

UV resistant, white plastic, AES HW 600G, non-corrosive, self extinguishing

41.7 L x 15.8 W x 6.9 H (cm)

16.4 L x 6.2 W x 2.7 H (in)

~ 1.50 kg (3.3 lb)

Environmental specifications

Item

Operating temperature

Specification

-30°C to +70°C (-22°F to +158°F)

Storage temperature -40°C to +85°C (-40°F to +185°F)

Humidity 100% non-condensing

Vibration

Compliance

IEC 60945

FCC Part 15, Subpart B; IEC 60945 (CE)

Weather IEC 60945, exposed

1

Depends on multipath environment, number of satellites in view, satellite geometry, ionospheric activity, and use of SBAS

2

Depends on multipath environment, number of satellites in view, satellite geometry, and ionospheric activity

3

IEC 60945 Standard

4

Based on a 40 second time constant

Specifications | HS70 User Manual

| 13

HS70 Dimensions

158 mm

(6.21”)

14 |

67 mm

(2.63”)

MAX

15 mm

(0.59”)

Max and Min Threads

MIN

8 mm

(0.31”)

Specifications | HS70 User Manual

417 mm

(16.41”)

PGNs with the HS70 in NMEA 2000 mode

Received messages based on a request

PG No.

(PGN)

Description

059392 ISO Acknowledgement

Used to acknowledge the status of certain requests addressed to a specific ECU.

059904 ISO Request

Request the transmission of a specific PGN, addressed or broadcast.

060928 ISO Address Claim

Used to identify to other ECUs the address claimed by an ECU

126996 Production Information

NMEA 2000 database version supported, manufacturer’s product code, NMEA

2000 certification level, Load Equivalency number, and other product-specific information.

126464 Receive/Transmit PGNs group function

The Transmit / Receive PGN List Group type of function is defined by first field. The message will be a Transmit or Receive PGN

List group function.

129538 GNSS Control Status

GNSS common satellite receiver parameter status.

129545 GNSS RAIM Output

Used to provide the output from a GNSS receiver’s Receiver Autonomous Integrity

Monitoring (RAIM) process. The Integrity field value is based on the parameters set in PGN 129546 GNSS RAIM Settings.

129546 GNSS RAIM Settings

Used to report the control parameters for a GNSS Receiver Autonomous Integrity

Monitoring (RAIM) process.

Level Default

Update Rate

(msec)

B

Freq (Hz)

On Request On

Request

B

B

B

B

B

B

B

On Request

On Request

On Request

On Request

On Request

On Request

On Request

On

Request

On

Request

On

Request

On

Request

On

Request

On

Request

On

Request

Specifications | HS70 User Manual

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16 |

Transmitted messages

PG No.

(PGN)

Description

126992 System Time

The purpose of this PGN is twofold: To provide a regular transmission of UTC time and date. To provide synchronism for measurement data.

127250 Vessel Heading

Heading sensor value with a flag for True or

Magnetic. If the sensor value is Magnetic, the deviation field can be used to produce a Magnetic heading, and the variation field can be used to correct the Magnetic heading to produce a True heading.

127251 Rate of Turn

Rate of change of the Heading.

127257 Attitude

Provides a single transmission that describes the position of a vessel relative to both horizontal and vertical planes. This would typically be used for vessel stabilization, vessel control and onboard platform stabilization.

127258 Magnetic Variation

Message for transmitting variation. The message contains a sequence number to allow synchronization of other messages such as Heading or Course over Ground.

The quality of service and age of service are provided to enable recipients to determine an appropriate level of service if multiple transmissions exist.

128259 Speed

Provides a single transmission that describes the motion of a vessel.

129025 Position, Rapid Update

Provides latitude and longitude referenced to WGS84. Being defined as single frame message, as opposed to other PGNs that include latitude and longitude and are defined as fast or multi-packet, this PGN lends itself to being transmitted more frequently without using up excessive bandwidth on the bus for the benefit of receiving equipment that may require rapid position updates.

129026 COG & SOG, Rapid Update

Single frame PGN that provides Course Over

Ground (COG) and Speed Over Ground

(SOG).

B

B

B

B

B

B

Level Default

Update Rate

(msec)

B 1000

Freq (Hz)

1

100

100

1000

1000

1000

100

250

10

10

1

1

1

10

4

Specifications | HS70 User Manual

PG No.

(PGN)

Description

129027 Position Delta, High Precision Rapid Update

The “Position Delta, High Precision Rapid

Update” Parameter Group is intended for applications where very high precision and very fast update rates are needed for position data. This PGN can provide delta position changes down to 1 mm with a delta time period accurate to 5 msec.

B 100 10

129028 Altitude Delta, High Precision Rapid Update

The “Altitude Delta, High Precision Rapid

Update” Parameter Group is intended for applications where very high precision and very fast update rates are needed for altitude and course over ground data. This PG can provide delta altitude changes down to 1 millimeter, a change in direction as small as 0.0057°, and with a delta time period accurate to 5 msec.

129029 GNSS Position Data

Conveys a comprehensive set of Global

Navigation Satellite System (GNSS) parameters, including position information.

129033 Time & Date

Single transmission that provides UTC time,

UTC Date, and Local Offset.

129539 GNSS DOPs

Provides a single transmission containing

GNSS status and dilution of precision components (DOP) that indicate the contribution of satellite geometry to the overall positioning error. There are three DOP parameters reported: horizontal (HDOP),

Vertical (VDOP), and time (TDOP).

129540 GNSS Sats in View

GNSS information on current satellites in view tagged by sequence ID. Information includes PRN, elevation, azimuth, SNR, defines the number of satellites; defines the satellite number and the information.

Level Default

Update Rate

(msec)

B 100

B

B

B

B

B

100

1000

1000

1000

1000

Freq (Hz)

10

10

1

1

1

1

Specifications | HS70 User Manual

| 17

NMEA 0183 messages

Message

$GPGGA

*$GPHDG

Info Type Description

P

H

*$GPHDT H

$GPHEV

$GPVTG

$GPZDA

H

*$GPROT H

V

V

GPS position and fix data

Magnetic deviation and variation for calculating magnetic or true heading

GPS-derived true heading

Heave value (in meters)

GPS-derived rate of turn (ROT)

COG and ground speed

Time and date

¼ Note:

The GP of the message is the talker ID.

Yes

Yes

Yes

Yes

Yes

IEC Approved

Message

Yes

Freq (Hz)

1

Yes 1

10

1

10

1

1

18 |

Specifications | HS70 User Manual

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