Technical information
OM76_Rev J Page 4 of 28
INTRODUCTION: How to Use This Manual
I.I Purpose & Overview
PURPOSE
The scope of this manual is intended to provide station personnel with the base installation, operation, and
maintenance requirements necessary for a 7.6-Meter C-, X- or Ku-Band Earth Station Antenna. This manual
provides a convenient reference for authorized operator/service personnel requiring technical information on
general system or specific subsystem equipment.
Top Level Assembly Numbers are as follows:
7.6m ESA C-Band: ES76C-1
7.6m ESA K-Band: ES76K-1
OVERVIEW
The installation, operation, and maintenance of the 7.6-Meter Earth Station Antenna require qualified and
experienced personnel. ASC Signal installation, operation, and maintenance instructions are illustrated for
such personnel. Additionally, the antenna should be inspected by qualified personnel to verify proper
installation, maintenance, and condition of equipment as described in Preventive Maintenance. The basic
equipment and accessories are either manufactured or design controlled by ASC Signal Corporation.
The prerequisite information necessary for the 7.6-Meter Earth Station Antenna can be found in this section.
Furthermore, this section should be reviewed before performing the installation, operation, or maintenance.
Warnings, recommended tools, and the antenna parts can be verified and/or determined with such a review.
I.II Description
The 7.6-Meter Earth Station Antenna provides high gain and exceptional pattern characteristics. The electrical
performance and exceptional versatility provides the ability to configure the antenna with your choice of
linearly- or circularly-polarized 2-port or 4-port combining network. That versatility is provided at the time of
initial purchase, as well as in the future, as your satellite communication requirements evolve.
The aluminum reflector is precision formed for accuracy and strength requiring minimal assembly. The reflector
assembly is 25-feet (7.6-meters) in diameter and segmented in a sixteen piece configuration to reduce
shipping volume and facilitate transport to remote sites. Reflector panels are chromate converted and painted
with a highly reflective white paint.
The versatile tripod mount can be purchased with either manual or motorizable capabilities. The tripod mount
features 180 degree azimuth coverage in three continuous 120 degree overlapping ranges and executes 90
degree continuous elevation adjustment. This large adjustment range provides non-critical foundation
orientation and the ability to view geostationary satellites from horizon-to-horizon, from any location worldwide.
The motorizable tripod mount features self-aligning bearings for the elevation pivots, resulting in "zero"
backlash. This mount can be operated manually, but has the ability to be upgraded for motorized operation,
including step-tracking or SmarTrack
®
applications. The motorizable mount type is indicated by the ES76 or
ES76HS letters within the antenna type number. The addition of the letter "HS" within the antenna type number
indicates that the mount includes High-Speed Azimuth/Elevation machine jackscrews, instead of
corresponding Azimuth/Elevation strut assemblies. The Azimuth/Elevation jackscrews are equipped for
integration with the optional motor drive systems. A cross-axis grounding kit is supplied with each mount to
ensure electrical interconnectivity of the complete structure.
The aluminum enclosure and hot-dipped galvanized steel mount maintain pointing accuracy and ensures
durability and reliability. The antenna and standard manual mount with enclosure will survive 125 mph (200
km/h) wind, in any position of operation, without damage or permanent deformation in moderate
coastal/industrial areas. Severe conditions require additional protection.
ASC Signal Corporation provides complete system engineering if required.