Novatel GPS-302-40 Bedienungsanleitung

GPS-302-40

GM-14915159 Rev 1 April 2018

USER GUIDE

The GPS-302-40 antenna is designed for airborne use, but works in any mobile application.

The GPS-302-40 is an active GPS antenna, 89.6 mm (3.53 inches) in diameter and operates at the GPS

L1 frequency of 1575.42 MHz and GPS L2 frequency of 1227.60 MHz. The antenna is a spherical radius

molded radome that provides enhanced protection against rain and ice.

The antenna includes the following:

• internal 40 dB low noise amplifier

• bias voltage from 3.8 – 6.0 VDC for operation

• band pass filtering

• DC bias provided through the coaxial connector

NovAtel offers optional coaxial cables of various lengths to connect the antenna and NovAtel GNSS

receivers.

This guide provides the basic information you need to install and begin using your new antenna.

ADDITIONAL EQUIPMENT REQUIRED

• A device with an antenna input port that both receives the RF signal and provides 3.8 – 6.0 VDC to

the antenna is required for the GPS-302-40. NovAtel GNSS receivers provide the necessary power

through their antenna RF connectors.

• Coaxial cable with a male TNC connector

INSTALLING THE ANTENNA

Both the input DC power and the output RF signal use a single coaxial cable connected to the unit's TNC

female connector.

The antenna can be attached to a surface with a square, four bolt, 1.9-inch space mounting pattern as

shown in the Mechanical Drawings section of this guide. Four screws pass through the antenna housing.

The integrator of this antenna is responsible for ensuring antenna installation meets all the

overall integrated system requirements.

Refer to Section 307 of www.faa.gov/documentLibrary/media/Advisory_Circular/

AC%2043.13-2B.pdf for information about antenna bonding in aircraft applications.

To install the antenna:

1. Install the supplied o-ring into the groove on the antenna base.

2. Drill and tap the mounting holes and drill the connector clearance hole on the mounting surface. See

the Mechanical Drawings section for mounting pattern details.

3. Use the four supplied mounting screws to attach the antenna to the mounting surface. The o-ring com-

presses and creates a seal between the surface and the antenna.

Ref. # Description

1 Antenna

2 Countersink screws

3 Mounting surface

4 O-ring

5 Drilled mounting holes

4. Remove the dust cap from the antenna’s TNC connector.

User-supplied o-ring grease can be used to hold the o-ring in the groove during

installation.

NovAtel recommends thread-locker (not included) on the mounting screws.

3 4

5. Attach the coaxial cable’s male TNC connector to the antenna’s TNC connector.

Ref.# Description

1 Mounted antenna

2 Mounting surface

3 TNC connector

4 Coaxial cable

6. Attach the other end of the coaxial cable to the antenna input port on the receiving device. The

receiving device must be equipped to provide power as detailed in the SPECIFICATIONS section of

this guide. All NovAtel GPS receivers provide the necessary power through the antenna RF

connectors.

This graphic provides examples of where the antenna may be located on an aircraft or vehicle (not to

scale).

ANTENNA CARE

The GPS-302-40 is designed to withstand the elements, including rain, snow and dust. However, to ensure

that the antenna performs optimally, keep the radome clean and brush off any ice or snow. In addition,

ensure the TNC connector remains clean and dry and replace the dust cap when a cable is not connected.

SPECIFICATIONS

Band L1 L2

Operational Band (typical) 1575.42 ±10 MHz 1227.60 ±10 MHz

Antenna gain (dBic) Free

Space

16-inch

ground

plane

4-foot

ground

plane

Free

Space

16-inch

ground

plane

4-foot

ground

plane

90° zenith +4.7 +0.4 +3.5 +3.3 +1.5 +4.9

10° elevation -1.8 -3.2 -2.0 -3.8 -4.0 -3.6

20° elevation -0.3 -1.0 +0.8 -2.0 -2.0 -0.1

30° elevation +1.4 +0.9 +1.8 -0.5 0.0 -1.8

60° – 90° elevation >3.9 +3.4/+0.4 >2.8 >2.7 +2.4/+1.5 >3.0

Beamwidth (dB) 114° 118° 139° 106° 111° 75°

LNA gain 40 dB 40 dB

Polarization Right-hand circular

Noise figure (typical) 3 dB

Nominal impedance 50 Ω

VSWR 2.0 : 1

POWER

Input voltage 3.8 – 6.0 VDC

Current (typical) 60 mA

PHYSICAL

Radome diameter x height 8.96 cm (3.53 inches) x 1.847 cm (0.727 inches)

Weight 191 g (6.802 ounces)

ENVIRONMENTAL

Maximum altitude 21,336 m (70,000 ft.)

Operating / storage

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

Vibration >30 G

Designed to meet these

standards DO-160D, MIL-C-5541, MIL-E-5400, MIL-I-45208A and MIL-STD-810

MECHANICAL DRAWINGS

Dimensions are in inches, followed by [mm]

PHASE CENTER

Please refer to the Mechanical Drawings before reading this section.

HEIGHT = Vertical phase center offset from antenna reference point or antenna reference plane (ARP),

see the MECHANICAL DRAWINGS section of this guide.

For relative offset numbers and phase center variation (PCV) tables, please visit the U.S. National

Geodetic Survey (NGS) website at www.ngs.noaa.gov/ANTCAL/. Look for ANTCOM ACC3G1215A_XT_1.

Please check our website for updates to this manual at www.novatel.com/Downloads/docupdates.html and

the websites mentioned above.

If you need any further advice on this matter, please visit our website at www.novatel.com. Other methods

of contacting Customer Service can be found on the last panel of this guide.

WEEE

If you purchased a GPS-302-40 antenna in Europe, return it to your dealer or supplier at the end of its life.

The objectives of the European Community's environment policy are, in particular, to preserve, protect and

improve the quality of the environment, protect human health and utilise natural resources prudently and

rationally. Sustainable development advocates the reduction of wasteful consumption of natural resources

and the prevention of pollution. Waste electrical and electronic equipment (WEEE) is a regulated area.

Where the generation of waste cannot be avoided, it should be reused or recovered for its material or

energy. WEEE products may be recognized by their wheeled bin label ( ).

See www.novatel.com/products/compliance/environmental-compliance/ for more information.

ROHS

The GPS-302-40 is compliant with the European Union (EU) Restriction of Hazardous Substances (RoHS)

Directive 2011/65/EU.

WARRANTY POLICY

NovAtel Inc. warrants that its Global Navigation Satellite System (GNSS) products are free from defects in

materials and workmanship, subject to the conditions set forth on our web site:

www.novatel.com/products/warranty.

GNSS Antenna™ Modules: One (1) Year

Cables and Accessories: Ninety (90) Days

RETURN INSTRUCTIONS

To return products, refer to the instructions found under the Return Policy Tab on the warranty page:

www.novatel.com/products/warranty.

QUESTIONS OR COMMENTS

If you have any questions or comments, please log a support request with NovAtel Customer Support

using one of the following methods:

Log a Case and Search Knowledge:

Website: www.novatel.com/support

Log a Case, Search Knowledge and View Your Case History: (login access required)

Web Portal: https://novatelsupport.force.com/community/login

E-mail:

[email protected]

Telephone:

U.S. and Canada: 1-800-NOVATEL (1-800-668-2835)

International: +1-403-295-4900

Unpublished rights reserved under international copyright laws.

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