Novatel | GNSS-302L-A | User guide | Novatel GNSS-302L-A User Guide

Novatel GNSS-302L-A User Guide
GNSS-302L-A
USER GUIDE
GM-14915158
Rev 3
February 2019
The GNSS-302L-A is an active GNSS antenna that receives the GPS L1 1575.42 MHz frequency,
GLONASS L1 1602 – 1606 MHz frequencies, GPS L2 1227.60 MHz frequency, GLONASS L2 1245 –
1260 MHz frequencies and L-Band 1525 – 1556 MHz frequencies.
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 GNSS-302L-A. NovAtel GNSS receivers provide the necessary
power through their antenna RF connectors.
Coaxial cable with a male TNC connector
INSTALLING THE ANTENNA

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.
Both the input DC power and the output RF signal use a single coaxial cable connected to the antenna's
TNC female connector.
The antenna attaches to a surface with an ARINC-743 bolt pattern. Four screws pass through the antenna
housing.
To install the antenna:
1. Install the supplied o-ring into the groove on the antenna base.

User supplied o-ring grease can be used to hold the o-ring in the groove during
installation.
2. Predrill the mounting holes and the connector clearance hole on the mounting surface. See the
Mechanical Drawings section for mounting pattern details.
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3. Use the four supplied mounting screws to attach the antenna to the mounting surface. The o-ring compresses and creates a seal between the surface and the antenna.

Ref. #
1
2
3
4
5
NovAtel recommends thread-locker (not included) on the mounting screws.
Description
Antenna
Countersink screws
Mounting surface
O-ring
Pre-drilled mounting holes
4. Remove the dust cap from the antenna’s TNC connector.
5. Attach the coaxial cable’s male TNC connector to the antenna’s TNC connector.
Ref. #
1
2
3
4
2
Description
Mounted antenna
Mounting surface
TNC connector
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 GNSS 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 GNSS-302L-A 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.
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SPECIFICATIONS
RF
Band
3 dB pass band
(typical)
Antenna Gain
(dBic) where G.P. =
Ground Plane
L1 GPS
L2 GPS
L1 GLONASS
1575.42 ±15 MHz 1227.60 ±12 MHz
1609 ±7 MHz
L2 GLONASS
L-Band
1252.5 ±7.5 MHz 1542.50 ±14 MHz
Free
Space
4 ft.
G. P.
Free
Space
4 ft.
G. P.
Free
Space
4 ft.
G. P.
Free
Space
4 ft.
G. P.
Free
Space
4 ft.
G. P.
90° zenith
+3.3
+2.0
+3.1
+4.8
+2.7
+1.4
+1.5
+2.4
+1.0
-2.0
10° elevation
-3.0
-2.5
-3.9
-3.5
-3.7
-3.4
-5.8
-6.3
-5.5
-5.1
20° elevation
-1.6
+0.4
-2.3
-0.3
-2.5
-0.5
-3.9
-3.2
-3.9
-1.9
30° elevation
-0.8
+1.6
-0.4
+1.8
-1.5
+0.5
-2.1
-1.2
-1.2
-0.5
60° - 90° elevation
>+2.6
>+1.6
>+2.0
>+2.6
>+2.0
>-0.2
>0.3
>-0.1
>-0.1
>-0.5
Beamwidth (3 dB)
100°
150°
105°
115°
100°
145°
100°
110°
95°
145°
LNA gain (typical)
26 dB
Polarization
Right-hand circular
Noise figure
(typical)
3.0 dB
Nominal
impedance
50 Ω
VSWR
< 2.0 : 1
30 dB
26 dB
30 dB
POWER
Input voltage
3.8 - 6.0 VDC
Current (typical)
60 mA @ 5 V
PHYSICAL
Dimensions
7.62 cm (3.00”) Wide x 11.938 cm (4.70”) Long x 2.611 cm (1.028”) High
Weight
224 g (7.9 oz.)
ENVIRONMENTAL
Maximum altitude
21,336 m (70,00 ft.)
Operating/Storage
temperature
-40°C to +85° C (-67°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
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33 dB
MECHANICAL DRAWINGS
Dimensions are in inches, followed by [mm]
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PHASE CENTER
Refer to the Mechanical Drawings before reading this section.
HEIGHT = Vertical phase center offset from antenna reference point or antenna reference plane (ARP)
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 ACCG5ANT_42AT1.
For absolute offset numbers and to download PCV tables, please visit the GEO++ website at
www.geopp.com.
When using either of the websites mentioned above, look for the NovAtel listing of your antenna model
and its hardware revision.
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 page of this guide.
WEEE
If you purchased a GNSS-302L-A 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 GNSS-302L-A 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:
Cables and Accessories:
One (1) Year
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.
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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:
support@novatel.com
Telephone:
U.S. and Canada: 1-800-NOVATEL (1-800-668-2835)
International: +1-403-295-4900
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© Copyright 2019 NovAtel Inc. All rights reserved.
Unpublished rights reserved under international copyright laws.
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