Hughes DiRECWAY AN4-074-DF User manual

1035567-0001
Revision A
October 31, 2005
Installation Manual for
.74 m Ku-band Antenna
Model AN4-074-DF
For Consumer Installations

Copyright © 2004, 2005 Hughes Network Systems, LLC
All rights reserved. This publication and its contents are proprietary to Hughes Network Systems,
LLC. No part of this publication may be reproduced in any form or by any means without the written
permission of Hughes Network Systems, LLC, 11717 Exploration Lane, Germantown, Maryland
20876.
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.
Trademarks
HUGHES, HUGHES NETWORK SYSTEMS, and DIRECWAY are trademarks of Hughes Network
Systems, LLC. All other trademarks are the property of their respective owners.

• Important safety information
1035567-0001 Revision A iii
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
in this manual
This section introduces the various types of warnings used in this
manual to alert you to possible safety hazards.
DANGER
Indicates an imminently hazardous situation, which, if not
avoided, will result in death or serious injury.
WARNING
Indicates a potentially hazardous situation, which, if not
avoided, could result in death or serious injury.
CAUTION
Indicates a potentially hazardous situation, which, if not
avoided, may result in minor or moderate injury.
CAUTION
Indicates a situation or practice that might result in property
damage.

• Important safety information
iv 1035567-0001 Revision A
Product warning labels The following safety alert label is affixed to each side of the
satellite antenna feed arm:
This label advises that the antenna emits radio frequency (RF)
energy. Because of this potential safety hazard, observe all
cautions in the following section (Antenna installation safety)
concerning RF radiation.
Antenna installation
safety
Observe the following precautions when installing the satellite
antenna. This manual also includes additional safety alerts where
appropriate concerning specific installation
procedures.
T0145005
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
WARNING
Only HNS-certified installers may install or service
DIRECWAY earth stations and components. All
HNS-certified installers must expressly acknowledge the
HNS requirements for DIRECWAY installations.
DANGER
If you work on a roof, tower, or other high structure or use a
ladder or scaffold to access the work site, follow these
precautions to prevent personal injury or death:
•Walk only on sound roof structures.
•Make sure the antenna assembly and installation
surface are structurally sound so they can support all
loads (equipment weight, ice, and wind).
•Use appropriate safety equipment (for example, a
lifeline), depending on the work location.
•Follow all safety precautions from the manufacturers of
all safety equipment and other equipment used.
•Perform as many procedures as possible on the ground.

• Important safety information
1035567-0001 Revision A v
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.
WARNING
•Do not work in high wind or rain or if a storm, lightning,
or other adverse weather conditions are present or
approaching.
•Do not attempt to assemble, move, or mount the
antenna on a windy day. Even a slight wind can create
strong, unexpected forces on the antenna surface.

• Important safety information
vi 1035567-0001 Revision A
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.
•Antennas mounted in Puerto Rico, the continental
United States, or at any site with greater than a 30°
elevation angle must be installed such that the lower lip
of the antenna reflector is at least 5 ft above any surface
upon which a person might be expected to stand, and
3ft 3 in. from any opening (such as a door or window) in
a building or adjacent structure.
•Antennas mounted in Canada, Alaska, Hawaii, or any
site with less than a 30° elevation must be installed such
that the lower lip of the antenna reflector is at least
5ft 9 in. above any surface upon which a person might
be expected to stand, and 3 ft 3 in. from any opening
(such as a door or window) in a building or adjacent
structure.
•The antenna must be mounted such that no object
which could reasonably be expected to support a
person is within 6 ft 7 in. of the edges of a cylindrical
space extending from the antenna reflector.
•If the above distance requirements cannot be met, the
antenna must be mounted in a controlled area
inaccessible to the general public, such as a fenced
enclosure or a roof.
•The antenna must be mounted such that there is no
object outside the controlled area which could
reasonably be expected to support a person within
6ft 7 in. of the edges of a cylindrical space extending
from the antenna reflector.
•A fenced installation must have a locked entry, and the
fenced area must be large enough to protect the general
public from exposure to potentially harmful levels of
radiation.
Failure to observe these cautions could result in injury to
eyes or other personal injury.

• Important safety information
1035567-0001 Revision A vii
Some installations may require additional precautions. See also
the Antenna Site Preparation and Mount Installation Guide
(HNS 1035678-0001).
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
or sides of the reflector.
Failure to observe these cautions could result in injury to
eyes or other personal injury.

• Important safety information
viii 1035567-0001 Revision A

• Contents
1035567-0001 Revision A ix
Contents
Important safety information . . . . . . . . . . . . . . . . . . . . . iii
Types of warnings used in this manual . . . . . . . . . . . . . . . . . . . iii
Product warning labels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iv
Antenna installation safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iv
About this document . . . . . . . . . . . . . . . . . . . . . . . . . . . .xv
Scope and audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xv
Organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xv
Revision record. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvi
Chapter 1
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Broadband satellite system components. . . . . . . . . . . . . . . . . . . .1
Antenna installation overview . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Tasks related to antenna installation . . . . . . . . . . . . . . . . . . . . . .4
Selecting the installation site . . . . . . . . . . . . . . . . . . . . . . . . . .4
Installing the antenna mount . . . . . . . . . . . . . . . . . . . . . . . . . .4
Grounding. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Cables and cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Chapter 2
Antenna parts and required tools. . . . . . . . . . . . . . . . . . .5
Antenna kit components. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Az/El cap and collar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Antenna reflector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Feed arm and radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Trimast (or other antenna mount). . . . . . . . . . . . . . . . . . . . . . .8
Optional shroud . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Small hardware list. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Tools. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Chapter 3
Installing the radio and antenna assemblies . . . . . . . . .11
Determining the pointing values . . . . . . . . . . . . . . . . . . . . . . . .12
Assembling the Az/El cap . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Installing the Az/El cap onto the antenna. . . . . . . . . . . . . . . . . .15
Adjusting elevation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Adjusting polarization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Installing the fine elevation pointing tool. . . . . . . . . . . . . . . . . .20

• Contents
x1035567-0001 Revision A
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 . . . . . . . . . . . . . .28
Attaching the optional shroud . . . . . . . . . . . . . . . . . . . . . . . . . .29
Chapter 4
Cabling and connections . . . . . . . . . . . . . . . . . . . . . . . . .31
Routing the cables at the ODU. . . . . . . . . . . . . . . . . . . . . . . . . .32
Connecting the transmit and receive cables . . . . . . . . . . . . . . . .33
Transmit cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
Receive cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
Ground connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
Chapter 5
Pointing the antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
Antenna pointing overview . . . . . . . . . . . . . . . . . . . . . . . . . . . .38
Using the installation software . . . . . . . . . . . . . . . . . . . . . . . .38
Peaking the signal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38
Personnel requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39
Pointing parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39
Outdoor pointing interface . . . . . . . . . . . . . . . . . . . . . . . . . . .39
OPI block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40
Prerequisites for antenna pointing . . . . . . . . . . . . . . . . . . . . . . .41
Adjusting the antenna. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42
Pointing adjustments on Az/El cap. . . . . . . . . . . . . . . . . . . . .43
Checking the azimuth, elevation, and polarization settings . . . .44
Receive pointing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
Adjusting azimuth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
Peaking the signal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46
Adjusting elevation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47
Adjusting polarization . . . . . . . . . . . . . . . . . . . . . . . . . . . .49
Isolating the transmit signal . . . . . . . . . . . . . . . . . . . . . . . . . . . .50
Final steps. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52
Removing the fine elevation pointing tool . . . . . . . . . . . . . . .52
Acronyms and abbreviations . . . . . . . . . . . . . . . . . . . . .53
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55