JRC DGPS224 User Manual

DGPS224(JLR-4341)

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DGPS SENSOR
JLR-4341

<INTRODUCTION>

<NOTES TO USERS>

In order to ensure safe and correct use of the equipment, symbols in this manual and on the
equipment itself alert the user to important operational precautions that could prevent personal
injury or damage. The followings show such symbols and their meanings. Please read this
manual carefully and take note of these symbols.

Other Symbols and Their Meanings:

This symbol indicates that the action is prohibited.

This symbol indicates that the action must be taken.

CODE : 7ZPNA4162 JRC

WARNING

This symbol indicates warning items that, if ignored,
may result in serious personal injury or even death.

Thank you for choosing the JRC GPS sensor DGPS224.
This manual describes Model DGPS224, JRC DGPS Sensor and Beacon receiver with Built-In
Antenna and SBAS capability.

• To ensure correct operation of the DGPS224, please read this Instruction Manual carefully before starting
to use.

• This manual should be kept on hand to provide as quick reference whenever you need it.

• It will also help you if you come across any problems in its operation.

This symbol indicates cautionary items that, if
ignored, may result in personal injury or physical
damage.

CAUTION

Prohibited

Do This

ＤＧＰＳ２２４

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SECTION 1 GENERAL INFORMATION

1.1 Function

By receiving GPS signals from up to twelve satellites, DGPS224 sensor provides highly accurate
position fixing. Furthermore, the DGPS224 can implement DGPS measurement by receiving the
correction data, and can achieve the measurement of high accuracy than the GPS measurement.

1.2 Features

• Built-In Beacon receiver
The DGPS224 can implement DGPS measurement by receiving the correction data from
Beacon station, and can achieve the measurement of high accuracy than the GPS
measurement.

• SBAS function

The DGPS224 can implement DGPS measurement by receiving the correction data from SBAS
satellite (WAAS/EGNOS/MSAS), and can achieve the measurement of high accuracy than the
GPS measurement.

• RAIM function

The accuracy of position fixes is self-tested by the equipment. (RAIM function)
This function assures higher reliability to the position fix than conventional method.

• Twelve-channel, twelve-satellite tracking, and all in view

Highly accurate position fixing is ensured by simultaneous tracking of up to twelve satellites by
twelve channels.

• Switching between IEC61162-1，NMEA0183 versions 1.5, 2.1 and 2.3.

The data output conforms to IEC61162-1 or NMEA 0183, and version switching is possible. This
feature allows the unit to be connected with various types of marine equipment including radars,
fish finders, and plotters.

1.3 Items Supplied

Table 1-1 indicates a listing of items that are included with your DGPS224.

Table 1-1 Components of the DGPS224

No. Name Model Code Q'ty Notes
1 DGPS Sensor

JLR-434１ JLR-434１

1 Including 15m (49.5ft) cable with

connector

2 Instruction Manual 7ZPNA4162 7ZPNA4162 1

3 Cable Guard Rubber MPPK31468 MPPK31468 1

4 Warranty Card

Europe
North America
Asia/Oceania

7ZPBS2901C
7ZPBS2902D
7ZPBS2903C

1
1
1

Option

1 Extension Cable CFQ-9000 CFQ-9000 1 15m cable with connector

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SECTION 2 PARTS AND FUNCTIONS

１

２

３

４

６

５

① SENSOR: GPS signals from up to twelve satellites and provides highly accurate position fixing.
② CABLE: Supplies DC power for the sensor and inputs/outputs data to a navigation equipment.

6-wire cable
③ BASE: Mount unit which conforms to 1"×14 NPT standards.
With this, the sensor can be installed onto a antenna mount or extension mast.
④ CONNECTOR: Hooks up the sensor to a navigation equipment. 6-pin

12VDC/24VDC (Red)

0VDC (Black)

Data Common (White)

Data Output (Green)

Set Data Input (Yellow)

Not Use (Brown)

Fig. 2.2 Arrangement of Connector

①Sensor

②Cable 15m

③Base

④Connector

φ134mm

155mm

Mounting Screw
1"-14UNS-2B

Fig. 2.1 Parts of DGPS224

Mass：Approx. 1.7Kg

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SECTION 3 INSTALLATION

3.1 Unpacking and Checking

Take out the DGPS224 from the packing case carefully. Check each item listed in Table 1-1 is
contained in the case. Save the case and the packing material until the equipment will be installed
successfully. In case the equipment is to be returned, kindly use the kept packing material.

3.2 Locating the Position for Installation

When connecting the cable attached to the equipment, do not bend it
acutely, twist it, or impart excessive force. Doing so sometimes causes
cracks or damage to the coating, resulting in fire or electrocution.

Do not install the sensor where there is excessive vibration.
Vibration may cause sensor failure.

Do not paint the sensor.
Doing so may result in reception problems.

Install the sensor where there are no obstacles, in order to ensure that
GPS signals can be directly received from satellites without
interference or reflection of signals from surrounding objects.
Whenever possible, select a place with the following characteristics.

If it is difficult to find an ideal site, select a place temporarily and install the
equipment. Conduct a test to make sure that the proper performance can be
obtained and then fix the equipment in position. If it is installed at an improper
place, reception accuracy may be impaired.

1. An open space, which allows uniform reception of satellite signals.

2. Far away from any high power transmission antennas.

3. Outside radar beams.

4. Away from the INMARSAT antenna by at least 5 meters and outside the
INMARSAT beam.

5. Away from the antenna of a VHF transmitter and a direction finder
by at least 3 meters.

6. Away from a Magnetic Compass by at least 1 meters.

7. 3 meter or more away from amateur radio antennas.

CAUTION

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3.3 Installation Procedure

3.3.1 Installation of the Sensor

The sensor base contains 1 inch 14UNS-2B screw holes. It can be attached to poles with cut male

screws, or off-the-shelf adapters.

(1) When performing attachment, always hold and turn the sensor base. Holding and turning the

radome may result in a large amount of force applied at the junction of the base and the radome,
resulting in damage to the sensor.

Do not apply force to the joint. Hold and turn the base.

(2) Secure the sensor cable in position with a clamp band as shown below to protect it against damage

due to vibration.

(3) When connecting an extension cable to the DGPS sensor, always seal with self-bonding tape in

order to waterproof the connector, and wrap this section with vinyl tape to protect it.

Radome

Base

Joint

Off-the-shelf
adapter, etc

Off-the-shelf
adapter, etc

Clamp band

Cable

Fig.3-1 Installation

Fig. 3-2 Appearance

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3.3.2 Installation of the Sensor to pass a cable through a pole

It is possible to pass cable into pole, when DGPS sensor attached to poles with cut male
screws. (1”-14 UNS-2A). In this case, Cable guard rubber (attached article) used.

(1) The cable is installed as following figure.
Do not bend the cable acutely. Doing so may result in damage to the cable.

Cable installation figure

(2) Cable guard rubber is set in DGPS sensor. See below.

Do not bend it acutely

Cable guard rubber
(attached article)

Push all the way in

Fig. 3-4 How to fit Cable guard rubber in DGPS sensor

Fig. 3-3 How to Cable form