Related Manuals for Hughes DiRECWAY AN4-074-DF
Summary of Contents for Hughes DiRECWAY AN4-074-DF
- Page 1 Installation Manual for .74 m Ku-band Antenna Model AN4-074-DF For Consumer Installations 1035567-0001 Revision A October 31, 2005...
- Page 2 Hughes Network Systems, LLC has made every effort to ensure the correctness and completeness of the material in this document. Hughes Network Systems, LLC shall not be liable for errors contained herein. The information in this document is subject to change without notice. Hughes Network Systems, LLC makes no warranty of any kind with regard to this material, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose.
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Page 3: Important Safety Information
Important safety information For your safety and protection, read this entire installation manual before you attempt to install the satellite antenna. In particular, read this safety section carefully. Keep this safety information where you can refer to it if necessary. Types of warnings used This section introduces the various types of warnings used in this manual to alert you to possible safety hazards. -
Page 4: Product Warning Labels
Product warning labels The following safety alert label is affixed to each side of the satellite antenna feed arm: CAUTION This device emits radio frequency energy Keep two feet (0.6 meters) away from this point Before servicing or upgrading, unplug indoor power connection T0145005 This label advises that the antenna emits radio frequency (RF) - Page 5 DANGER • To avoid electric shock, stay at least 20 ft from power lines. • If any part of the antenna or mount assembly comes in contact with a power line, call your local power company to remove it. Do not try to remove it yourself. Failure to heed these warnings could result in serious injury or death.
- Page 6 CAUTION Observe these precautions to avoid exposure to RF radiation, a potential safety hazard: • The antenna must be installed in a location or manner not readily accessible to children and in a manner that prevents human exposure to potentially harmful levels of radiation.
- Page 7 CAUTION • All installations of any type or size must carry an industry standard and government approved Radiation Hazard Caution label on the feed arm. • A fenced or roof installation in a commercial, industrial, or institutional environment must carry a Radiation Hazard Caution sign on the access door, gate, or permanently mounted access ladder that is within plain sight of anyone approaching the antenna from the front...
- Page 8 • Important safety information viii 1035567-0001 Revision A...
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Page 9: Table Of Contents
Contents Important safety information ..... iii Types of warnings used in this manual ....iii Product warning labels . - Page 10 Installing a shim for vertical transmit polarization ..21 Installing the radio assembly on the feed arm ....25 Connecting the feed arm to the antenna reflector... .26 Installing the antenna assembly onto the mast .
- Page 11 Figures Chapter 1 1. Installed .74 m antenna ..........2 Chapter 2 2.
- Page 12 Chapter 4 30. Transmit and receive cable configurations ......32 31. Connecting the transmit cable ........33 32.
- Page 13 Tables Chapter 2 1. Parts list ............9 2.
- Page 14 • Tables 1035567-0001 Revision A...
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Page 15: About This Document
About this document Scope and audience This manual explains how to assemble, install, and point the ® DIRECWAY model AN4-076-DF .74 m antenna. It is written for qualified installers who are familiar with satellite antenna installation practices and are capable of properly applying the information presented. -
Page 16: Revision Record
Revision record This section describes the revision history of this manual. Revision Date of issue Scope April 7, 2004 Initial release October 31, 2005 Production release • About this document 1035567-0001 Revision A... -
Page 17: Overview
Chapter 1 Overview The DIRECWAY model AN4-074-DF .74 m antenna is used for Ku-band consumer installations. This chapter presents an overview of the DIRECWAY broadband satellite system, a summary of the antenna installation steps, and information about tasks related to antenna installation. These topics are included in the following sections: •... - Page 18 Figure 1 shows the .74 m antenna installed on a pole mount. Radio (not visible) in optional shroud Antenna reflector Transmitter Feed arm Mast Figure 1: Installed .74 m antenna Chapter 1 • Overview 1035567-0001 Revision A...
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Page 19: Antenna Installation Overview
Antenna installation The antenna installation steps and related tasks are summarized below. The steps in bold type are documented in this manual. overview 1. Choose an installation site. 2. Select a method for mounting the antenna. 3. Install the antenna mount. 4. -
Page 20: Tasks Related To Antenna Installation
Tasks related to antenna This section explains where you can find information on tasks related to antenna installation. installation Selecting the installation Factors you should consider in selecting an installation site are discussed in the DIRECWAY Antenna Site Preparation and site Mount Installation Guide (HNS 1035678-0001). -
Page 21: Antenna Parts And Required Tools
Chapter 2 Antenna parts and required tools This chapter describes the components and parts provided with the model AN4-074-DF antenna kit. It includes the following sections: • Antenna kit components on page 5 • Small hardware list on page 9 •... -
Page 22: Az/El Cap And Collar
Az/El cap and collar The Az/El cap (Figure 2) is used to point the antenna at the satellite. The Az/El cap is shipped unassembled; it can be assembled in about 2 to 5 min. Az/El mechanism Revolving plate Polarization plate Figure 2: Az/el cap The Az/El cap is shipped in a bag containing: •... -
Page 23: Feed Arm And Radio
Feed arm and radio Figure 4 shows the feed arm, and Figure 5 shows the radio assembly. Figure 4: Feed arm (unattached) The radio assembly (Figure 5) consists of the transmitter, low noise block converter (LNB), and transmit/receive isolation assembly (TRIA). Figure 5: Radio assembly Chapter 2 •... -
Page 24: Trimast (Or Other Antenna Mount)
Trimast (or other antenna The trimast is not part of the antenna kit. It is shown here because it is the most commonly used mounting option for the .74 m mount) antenna. As shown in Figure 6, the trimast can be configured and manipulated in several ways to adapt it for mounting onto surfaces of various angles. -
Page 25: Small Hardware List
Small hardware list Table 1 lists the small hardware parts that are included in the antenna kit. You may have hardware left over after you have completed installation. Table 1: Parts list Item Details Quantity Parts used for antenna assembly and installation Bolts 5/16-18 Flat washers... -
Page 26: Tools
Tools Table 2 lists the tools required to assemble, install, and point the antenna. Table 2: Tools required to install and point the antenna Tool Details Open-end wrench 1/2 in. Open-end or 7/16 in. socket wrench Socket wrench or 5/16 in. adjustable wrench Socket wrench 1/2 in. -
Page 27: Installing The Radio And Antenna Assemblies
Chapter 3 Installing the radio and antenna assemblies This chapter explains how to install the antenna, radio, and associated hardware. Topics include: • Determining the pointing values on page 12 • Assembling the Az/El cap on page 13 • Installing the Az/El cap onto the antenna on page 15 •... -
Page 28: Determining The Pointing Values
Determining the Before proceeding, use the installation software to determine the initial values to use for setting azimuth, elevation, and pointing values polarization. Record these values and keep them handy for reference as you install and point the antenna. In this manual, installation software refers to: •... -
Page 29: Assembling The Az/El Cap
Assembling the Az/El The Az/El cap is shipped un-assembled. Follow the directions in this section to assemble it. You should be able to assemble it in about 2-5 min. To assemble the Az/El cap: 1. Place the revolving plate on a flat surface. See Figure 8. Figure 8: Revolving plate 2. - Page 30 4. Place the Az/El mechanism over the revolving plate so the bolt holes align. 5. Install a bolt from underneath the revolving plate. While holding it with one hand, install the 7/16-in. flat washer and nut. See Figure 10. 6. Repeat until all four bolts are installed. Align bolt from underneath and install washer...
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Page 31: Installing The Az/El Cap Onto The Antenna
Installing the Az/El cap Before you attach the Az/El cap to the antenna, you must set the antenna elevation and polarization. As you set the elevation and onto the antenna polarization, refer to Figure 11. Elevation nuts Clamp bolts (one on each side) Elevation scale Canister... -
Page 32: Adjusting Elevation
Adjusting elevation This section describes how to adjust the antenna elevation to the value determined by the installation software. Later, when you point the antenna, you fine-tune the elevation adjustment. Figure 13 illustrates how you adjust the elevation by moving the antenna up and down. - Page 33 3. Use a 1/2-in. socket wrench or open-end wrench to loosen the two elevation nuts. See Figure 14. 4. Locate the elevation reference edge on the elevation scale on the right side of the cap assembly. See Figures 14 and 15. Elevation nut (one on each side)
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Page 34: Adjusting Polarization
Adjusting polarization This section describes how to adjust the antenna’s polarization to the value determined by the installation software. Later, when you point the antenna, you fine-tune the polarization adjustment. Figure 16 illustrates how you adjust polarization by rotating the antenna. - Page 35 5. Place the Az/El cap over the screw holes in the back of the antenna reflector (see Figure 17). Self-tapping screws Self-tapping screws Bottom of reflector Figure 17: Placing the Az/El cap on the antenna reflector Make sure the Az/El cap mount screw holes are properly aligned with the holes in the antenna reflector.
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Page 36: Installing The Fine Elevation Pointing Tool
Installing the fine The fine elevation pointing tool (Figure 18) consists of a long elevation adjustment bolt with a clamp on one end and a flange on elevation pointing tool the other end. The clamp and flange attach to the Az/El cap as shown in Figure 18. -
Page 37: Installing A Shim For Vertical Transmit Polarization
Installing a shim for Follow the instructions in this section only if installation specifications or a service order states that vertical transmit vertical transmit polarization is required. polarization If vertical transmit polarization is not required, go to Installing the radio assembly on the feed arm on page 25. The radio assembly is shipped with a horizontal transmit polarization shim installed. -
Page 38: Horizontal Shim And Vertical Shim For Transmit Polarization
Figure 20 illustrates the difference between the horizontal shim and vertical shim. Note the positions of the alignment pins. TRIA Horizontal shim in place Vertical shim in place (In this photograph, the TRIA has not yet been rotated.) Alignment O-ring pins Alignment pins... - Page 39 Because of the shim’s alignment pins, you must rotate the TRIA 90 ° from its horizontal polarization position. You must rotate the TRIA before you re-attach the waveguide end so you can insert the shim alignment pins into the waveguide end plate.
- Page 40 Figure 22 shows how the TRIA is positioned for horizontal transmit polarization compared to how it is positioned for vertical transmit polarization. TRIA Horizontal polarization TRIA TRIA rotated for vertical polarization Figure 22: TRIA position for horizontal and vertical transmit polarization 6.
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Page 41: Installing The Radio Assembly On The Feed Arm
Installing the radio If the radio assembly is already attached to the feed arm, skip this section and go to Connecting the feed arm to the antenna assembly on the feed reflector on page 26. Follow these steps to install the radio assembly on the feed arm: 1. -
Page 42: Connecting The Feed Arm To The Antenna Reflector
6. Use a 5/16-in. socket wrench or open-end wrench to tighten the bolts attaching the transmitter to the feed arm. 7. Make sure the transmitter and feed arm are oriented correctly, as shown in Figure 24. Feed assembly Transmitter Waveguide Figure 24: Radio assembly installed on the feed arm 8. - Page 43 To connect the feed arm to the antenna reflector: 1. Insert the 5/16-18 wedge nut, thinner end first, into the slot provided on the back of the reflector, as shown in Figure 25. The wedge nut is keyed so that it will fit properly only one way into its slot in the reflector.
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Page 44: Installing The Antenna Assembly Onto The Mast
Installing the antenna This section describes how to install the antenna assembly (including the Az/El cap) onto the mast. assembly onto the mast To install the antenna assembly onto the mast: 1. Lightly grease the area at the end of the mast or metal pole that will be covered by the Az/El cap canister. -
Page 45: Attaching The Optional Shroud
Attaching the optional This section explains how to attach the optional shroud to the feed assembly. The shroud helps protect the feed assembly and shroud improves its appearance, but it is not required. One side of the shroud is wider than the other. You place the wider side on the right side of the feed assembly, as you face the antenna. -
Page 46: Shroud Screws
2. Use a No. 2 Phillips-head screwdriver to install the bottom screw. See Figure 28. Side screw holes, one on each side Bottom screw Figure 28: Shroud screws 3. Optional: Install the two side screws. The final assembly will look like Figure 29. Figure 29: Feed assembly with shroud Chapter 3 •... -
Page 47: Cabling And Connections
Chapter 4 Cabling and connections This chapter illustrates where the ODU transmit, receive, and ground connectors are located; shows how to route the transmit and receive cables at the ODU, and explains how to connect the transmit and receive cables to the radio assembly. You must connect the transmit, receive, and ground cables before you can point the antenna (Pointing the antenna on page 37). -
Page 48: Routing The Cables At The Odu
Routing the cables at Route the coaxial transmit and receive cables at the ODU as follows: the ODU 1. Route the transmit cable (marked with blue electrical tape) to the back of the transmitter in a configuration similar to that shown in Figure 30. -
Page 49: Connecting The Transmit And Receive Cables
Connecting the transmit This section explains how to connect the transmit and receive cables to the radio assembly. and receive cables Transmit cable Connect the transmit cable to the transmitter as follows: 1. From inside the building, disconnect the IDU power supply. 2. -
Page 50: Receive Cable
Receive cable Connect the receive cable to the LNB as follows: 1. Connect the receive cable (marked with red tape) to the LNB connector as illustrated in Figure 32. Receive F connector, female Figure 32: Connecting the receive cable to the LNB 2. -
Page 51: Ground Connection
Ground connection Figure 33 shows the location of the ground screw on the transmitter. Ground the transmitter and mast. For grounding procedures, refer to your training, best grounding practices, and applicable parts of the NEC. Transmit F connector, female Ground screw Not used Figure 33: Ground screw on the transmitter... - Page 52 Chapter 4 • Cabling and connections 1035567-0001 Revision A...
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Page 53: Pointing The Antenna
Chapter 5 Pointing the antenna This chapter explains how to point the antenna and connect the transmitter. Topics include: • Antenna pointing overview on page 38 • Prerequisites for antenna pointing on page 41 • Adjusting the antenna on page 42 •... -
Page 54: Antenna Pointing Overview
Antenna pointing This chapter describes a general procedure for pointing the antenna. The objectives for antenna pointing are to: overview • Locate and detect the satellite signal • Peak the signal to achieve the greatest possible signal strength Using the installation The exact pointing procedure depends on the installation software used, SBC or WebSetup. -
Page 55: Personnel Requirements
By obtaining the strongest possible signal you ensure that the terminal can use all the system’s capacity. Personnel requirements One person can point the antenna if an OPI is used. Otherwise, pointing is usually a two-person task. One person aims and adjusts the antenna while the other watches the signal strength display on the computer and relays the readings to the person at the antenna. -
Page 56: Opi Block
The OPI attaches to the receive cable from the LNB, as shown in Figure 35. Note that the OPI will not work unless it is enabled on the appropriate screen on the installation software. (Check the box labeled .) For further details, see Outdoor Enable OPI Display Pointing Interface Operating Instructions (HNS 1031832-0001). -
Page 57: Prerequisites For Antenna Pointing
Prerequisites for The following are required for antenna pointing: antenna pointing • The antenna must be installed. • The IDU must be installed. • The transmit and receive cables must be connected to the IDU and ODU. • The outdoor pointing interface (OPI) must be installed. •... -
Page 58: Adjusting The Antenna
Adjusting the antenna To point the antenna you make three adjustments: • Azimuth – Side-to-side adjustment • Elevation – Adjustment up and down • Polarization – Rotational adjustment These adjustments are illustrated in Figure 37. The corresponding mechanical adjustments on the antenna are explained in the sections that follow. -
Page 59: Pointing Adjustments On Az/El Cap
Pointing adjustments on Figures 38 and 39 show the antenna parts that are used to adjust antenna azimuth, elevation, and polarization. Az/El cap Antenna reflector Polarization scale Holes for installing fine elevation tool Elevation scale Figure 38: Pointing features on the Az/el cap Polarization nut (1 of 4) Polarization... -
Page 60: Checking The Azimuth, Elevation, And Polarization Settings
Checking the azimuth, 1. Check to see if the elevation reference and polarization settings are still at their previously set values (the values elevation, and calculated by the installation software). If they are not, see polarization settings Installing the Az/El cap onto the antenna on page 15 and follow the instructions to align the antenna to the correct values. -
Page 61: Receive Pointing
Receive pointing Receive pointing peaks the receive signal. You must peak the signal even if the antenna is locked to it. Use the installation software to check the signal strength. Then adjust the antenna to peak the signal. The installation software shows numerical and graphic indications of signal strength. -
Page 62: Peaking The Signal
not yet moved to mark 3 on the mast, return to step 1 (in Adjusting azimuth) and adjust it again. Keep moving the reflector a little at a time until you get a signal. 4. Keep moving the antenna reflector a little at a time until you detect a signal or until you reach the limit to the right. -
Page 63: Adjusting Elevation
Adjusting elevation Figure 42 illustrates how you adjust the elevation by moving the antenna up and down. Elevation Elevation T0145007 Figure 42: Adjusting elevation Fine-tune the antenna elevation as follows: 1. Loosen the two elevation nuts. See Figure 43. The elevation nuts are located on the curved slots on each side of the canister. - Page 64 2. While watching the signal strength display, adjust the elevation adjustment nuts by turning them a few turns clockwise and counterclockwise until you peak the signal again. Note: You may have to pull back on the top of the antenna to take pressure off the elevation adjustment bolt when making adjustments.
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Page 65: Adjusting Polarization
7. While watching the signal strength number to ensure that it stays at maximum, tighten the elevation nuts in the following sequence: a. Snug the left nut but do not completely tighten it. b. Snug the right nut but do not completely tighten it. c. -
Page 66: Isolating The Transmit Signal
Isolating the transmit To prevent signal cross talk, you use a procedure known as Automated Cross Polarization (ACP) to isolate the transmit signal signal from the receive signal. ACP is included in the installation software. The ACP software operates in two different modes—manual or automatic fine pointing. - Page 67 The following steps are necessary only if the antenna does not pass the manual ACP test: 1. Loosen the two elevation nuts. In the following steps you make very small adjustments in azimuth and elevation. If you make too great a change, you lose the receive signal and the test cannot continue because you are out of contact with the NOC.
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Page 68: Final Steps
Final steps After pointing, make sure the required safety labels and/or signs are present: • Make sure a Radiation Hazard Caution label is present, legible, and visible on the feed arm. • If the antenna is enclosed by a fence, make sure a Radiation Hazard Caution sign is present, legible, and visible on the entrance gate. -
Page 69: Acronyms And Abbreviations
Acronyms and abbreviations ft-lbf – Foot-pound force ODU – Outdoor unit OPI – Outdoor pointing interface IDU – Indoor unit in. – Inch RF – Radio frequency LNB – Low noise block converter sec – Second m – Meter TRIA – Transmit/receive isolation assembly min –... - Page 70 • Acronyms and abbreviations 1035567-0001 Revision A...
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Page 71: Index
Index Antenna Hardware parts list adjustment locations installing onto the mast mount Installation summary of steps pointing Isolating the transmit signal isolating the transmit signal receive pointing reflector Az/El cap Mount for antenna assembling installing Azimuth, adjusting OPI ground block Cables Parts list connecting... - Page 72 Signal strength, maximizing Summary of installation steps System components Tasks related to antenna installation Tool list Transmit cable connecting routing Transmit polarization shim Transmit signal, isolating Transmitter, connecting Trimast • Index 1035567-0001 Revision A...
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