ANT-A71GLA4-TW Antenna USER GUIDE OM-20000135 Rev 1 April 2012 The ANT-A71GLA4-TW is an active GPS antenna that receives the GPS L1 1575.42 MHz frequency, the GLONASS L1 1602 – 1626 MHz frequencies and L-band 1525 – 1560 MHz frequencies. 2. Pre-drill the mounting holes and 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 compresses and creates a seal between the surface and the antenna. 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. Note: NovAtel recommends thread-locker (not included) on the mounting screws. The ANT-A71GLA4-TW is aircraft certified for navigation. 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 2.5 - 24.0 VDC to the antenna is required for the ANT-A71GLA4-TW. NovAtel GPS receivers provide the necessary power through their antenna RF connectors. Coaxial cable with a male TNC connector Ref. # 1 2 3 Description Ref.# Antenna Countersink screws Mounting surface 4 5 Description 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. 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 attaches to a surface with an ARINC-743 bolt pattern. Four screws pass through the antenna housing. Ref.# Description 1 2 3 4 Mounted antenna Mounting surface TNC connector Coaxial cable To install the antenna: 1. Install the supplied o-ring into the groove on the antenna base. Note: User-supplied o-ring grease can hold the o-ring in the groove during installation. This illustration provides examples of where the antenna may be located on an aircraft or vehicle (not to scale). ANTENNA CARE The ANT-A71GLA4-TW 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 ELEVATION GAIN PATTERNS RF L-Band: Max 2.5 dB Band L1 GPS L1 GLONASS L-band 3 dB pass band (typical) 1575.0 ±20 MHz 1614.0 ± 12 MHz 1542.5 ±17.5 MHz Antenna gain (dBic) Free Space 4-foot ground plane Free Space Free Space 90° zenith +5.5 +4.5 >+3.3 >+2.5 10° elevation -1.2 -1.4 >-3.2 >-4.7 20° elevation +0.3 +1.4 >-1.6 >-3.0 30° elevation +1.8 +2.2 >-0.2 >-2.3 60° – 90° elevation >4.8 >3.8 >+2.5 >+2.0 Beamwidth (dB) 106° 130° 106° 106° LNA gain 40 dB Polarization Right-hand circular Noise figure (typical) 3.0 dB Nominal impedance 50 VSWR 1.5 : 1 POWER Input voltage + 2.5 - 24.0 VDC Current 39 mA Radome diameter x height 7.62 cm (3.0 inches) W x 11.938 cm (4.70 inches) L x 2.00 cm (0.788 inches) H Weight 191 g (6.8 ounces) Maximum altitude 21,336 m (70,000 ft.) PHYSICAL ENVIRONMENTAL Operating / storage temperature -55° C to +85° C (-67° F to +185° F) Vibration >30 G Designed to meet these standards FAA TSO-C144, DO-160D, DO-228, MIL-C-5541, MIL-E-5400, MIL-I-45208A, MIL-STD-810 and SAE J1455 L1 Peak Gain: 5.5 dB PHASE CENTRE WARRANTY POLICY Please refer to the Mechanical Drawings before reading this section. 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 from date of sale Cables and Accessories: Ninety (90) Days from date of sale Date of sale shall mean the date of the invoice to the original customer for the product. NovAtel's responsibility 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. HEIGHT = Vertical phase centre offset from antenna reference point or antenna reference plane (ARP), see the MECHANICAL DRAWINGS section of this guide. 0 MECHANICAL DRAWINGS Dimensions are in inches, followed by [mm] For relative offset numbers and phase centre variation (PCV) tables, please visit the U.S. National Geodetic Survey (NGS) website at www.ngs.noaa.gov/ANTCAL/. 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. At the time of print, we are unable to provide typical absolute and relative offset numbers for the current ANT-A71GLA4-TW antenna model. 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. 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, (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 GPSAntenna 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 Service at 1-800-NOVATEL (U.S. and Canada only) or 403-295-4900 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 packaging to avoid damage. Note:Before shipping any material to NovAtel or our Dealer, obtain a Return Material Authorization (RMA) number from the point of purchase. You may also visit our web site (http://www.novatel.com) and select Support | Repair Request from the side menu. QUESTIONS OR COMMENTS If you have any questions or comments regarding your antenna, contact NovAtel Customer Service using one of methods provided below. Email: email@example.com Web: www.novatel.com Phone: 1-800-NOVATEL (U.S. & Canada) 403-295-4900 (International) Fax: 403-295-4901 © Copyright 2005-2012 NovAtel Inc. All rights reserved.Printed in Canada on recycled paper. Unpublished rights reserved under international copyright laws. Recyclable.
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