GNSS-750
ANTENNA GUIDE
OM-20000120
Rev 5
October 2012
The GNSS-750 is an active antenna designed to receive signals from the GPS, Galileo and GLONASS
satellites as well as L-Band signals. This antenna is designed to operate for GPS L1/L2/L2C/L5,
GLONASS L1/L2/L3 and L-Band frequency bands. The GNSS-750 is also designed to operate for Galileo
L1/E5a/E5b and E6 frequency bands and receives Compass B1/B2/B3. This guide provides the basic
information you need to install and begin using your new antenna.
Additional Equipment Required
The following equipment is required to set up the GNSS-750:
•
•
•
A sturdy pillar or mount with a 5/8" x 11 thread that extends between 3/8" and 7/8" (9 mm and 22 mm)
Coaxial cable with a male N connector
A device with an antenna input port that both receives the RF signal and provides 3.3 to 12.0 VDC to the
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antenna
Accessories
Additional available accessories include the following:
•
A radome (NovAtel part number 01018195)
SITE SELECTION GUIDELINES
For optimal performance, select a site that meets the following conditions before installing:
•
•
An unobstructed as possible line-of-sight from horizon to horizon and at all bearings and elevation angles.
As far as possible from reflective objects, especially those that are above the antenna and any water bodies,
which can be a strong source of multi-path reflections.
•
If obstructions and reflective surfaces are within 30 m, ensure the site is as high as possible. Otherwise,
mount the antenna as low as possible.
1. Most NovAtel GNSS receivers provide the necessary power through their antenna RF connectors. Check
the applicable receiver user manual for details.
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ANTENNA CARE
The GNSS-750 is designed to withstand the elements, including rain, snow, and dust. However, to ensure
your antenna performs optimally, keep the top surface and the choke rings of the antenna clean and brush
off any ice and snow. A radome is recommended. In addition, ensure the N connector remains clean and
dry and replace the dust cap when a cable is not connected.
ELEVATION GAIN PATTERNS
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SPECIFICATIONS
RF
Upper:1525-1612 MHz
Lower:1164-1301 MHz
3 dB pass band (typical)
Out-of-band rejection (typical)
0 900 80 dB
900 1002.5 MHz 70 dB
1002.5 1062.5 MHz 50 dB
1062.5 1102.5 MHz 30 dB
1370 1465 MHz 30 dB
1410 1440 MHz 50 dB
1668 1718.5 MHz 30 dB
1718.5 1798.5 MHz 50 dB
1798.5 1900 MHz 70 dB
1900 3000 MHz 80 dB
Gain at zenith (= 90°) (min)
+5 dBic
Gain roll-off (zenith to horizon) 10-15 dB
LNA gain (typical)
41 3 dB
Right-hand circular
Polarization
Noise figure (typical)
1.5 dB
9 ns
Differential propagation delay
(maximum)
Nominal impedance
VSWR
50
1.5 : 1
POWER
Input voltage
3.3 - 12 V
70 mA
Current (typical)
PHYSICAL
Diameter
Weight
Height
380 mm (14.96")
7.6 kg (317.47 oz)
200 mm (7.48”)
ENVIRONMENTAL
-55°C to +85°C (-67°F to
-55°C to +90°C (-67°F to
MIL-STD-810F Method 509.4
IPX6 and IPX7
Operating temperature
Storage temperature
Salt spray
Water ingress protection
Dust ingress protection
IP6X
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MECHANICAL DRAWINGS
All dimensions are in millimetres (mm) where 1 inch = 25.4 mm.
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PHASE CENTER
Please see the , Mechanical Drawings section on the previous panel and the close up of the label below
before reading this section.
Model Name
For absolute offset numbers and to download PCV (Phase Center offsets and Variations) tables, please
When using the Web site mentioned above, look for the NovAtel listing of your antenna model and its hard-
ware revision.
Only integer hardware revisions affect the phase center offsets. For example, the numbers given for
hardware revision 2.02 are applicable to an antenna labelled H/W Rev: 2.00, 2.05, 2.12 and so on.
Table 1: Height
Absolute (GEO++) with Radome
Absolute (GEO++) without Radome
170 mm
157 mm
162 mm
159 mm
L1
L2
If you need any further advice on this matter, please visit our Web site at www.novatel.com. Other methods
of contacting Customer Support can be found on the last panel of this guide.
Warranty Policy
NovAtel Inc. warrants that its Global Positioning System (GPS) products are free from defects in materials
and workmanship, subject to the conditions set forth below, for the following periods of time:
GPSAntenna™ Modules:One (1) Year
Cables and Accessories:Ninety (90) Days
Date of sale shall mean the date of the invoice to the original customer for the product. NovAtel's responsi-
bility respecting this warranty is limited solely to product repair at an authorized NovAtel location only.
Determination of repair will be made by NovAtel personnel or by
technical personnel expressly authorized by NovAtel for this purpose.
The foregoing warranties do not extend to
(i) nonconformities, defects or errors in the products due to accident, abuse, misuse or negligent use of the
products or use in other than a normal and customary manner, environmental conditions not conforming to
NovAtel’s specifications, or failure to follow prescribed installation, operating and maintenance procedures,
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(ii) defects, errors or nonconformities in the products due to modifications, alterations, additions or changes
not made in accordance with NovAtel’s specifications or authorized by NovAtel, (iii) normal wear and tear,
(iv) damage cause by force of nature or act of any third person, (v) shipping damage; or (vi)service or
repair of product by the dealer without prior written consent from NovAtel.
In addition, the foregoing warranties shall not apply to products designated by NovAtel as beta site test
samples, experimental, developmental, preproduction, sample, incomplete or out of specification products
or to returned products if the original identification marks have been removed or altered.
The warranties and remedies are exclusive and all other warranties, express or implied, written or oral,
including the implied warranties of merchantability or fitness for any particular purpose are excluded.
NovAtel shall not be liable for any loss, damage or expense arising directly or indirectly out of the
purchase, installation, operation, use or licensing or products or services. In no event shall NovAtel be
liable for special, indirect, incidental or consequential damages of any kind or nature due to any cause.
There are no user-serviceable parts in the GPS Antenna and no maintenance is required. If the unit is
faulty, replace with another unit and return the faulty unit to NovAtel Inc. You must obtain a RETURN
MATERIAL AUTHORIZATION (RMA) number by calling NovAtel Customer Support at 1-800-NOVATEL
(U.S. and Canada only) or 403-295-4500 before shipping any product to NovAtel or a dealer. Once you
have obtained an RMA number, you will be advised of proper shipping procedures to return any defective
product. When returning any product to NovAtel, please return the defective product in the original pack-
aging to avoid damage.
Before shipping any material to NovAtel or Dealer, please obtain a Return Material Authorization (RMA)
number from the point of purchase or NovAtel’s Customer Support.
WEEE Notice
If you purchased your GNSS-750 in Europe, please 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.
RoHS Statement
The GNSS-750 Antenna is not within the scope of the RoHS Directive. It is intended to be used as a Refer-
ence Station antenna at a fixed location, over a long period of time, and as such it qualifies to use the
“Large-Scale Fixed Installation” RoHS scope exemption.
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Questions or Comments
If you have any questions or comments regarding your GNSS-750, please contact NovAtel Customer
Support using one of methods provided below.
E-mail: [email protected]
Web: www.novatel.com
Phone: 1-800-NOVATEL (International) or 403-295-4500 (U.S. & Canada)
Fax: 403-295-4501
© Copyright 2012 NovAtel Inc. All rights reserved.
Unpublished rights reserved under international copyright laws.
Recyclable
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