LNB
Low-Noise Block Downconverter
Installation and Operation Manual
IMPORTANT NOTE: The information contained in this document supersedes all previously published
information regarding this product. Product specifications are subject to change without prior notice.
Part Number MN-LNB - Revision 0
LNB
Low-Noise Block Down converter
Installation and Operation Manual
Part Number MN-LNB
Revision 0
Copyright © 2011 Comtech EF Data. Al l rights reserv ed. Printed in the USA.
Comtech EF Data, 2114 West 7th Street, Tem pe, Arizona 85 281 USA, 480.3 33.2200, FAX: 480.333.2161
This page is intentionally blank.
Table of Contents
TABLE OF CONTENTS ............................................................................................................III
0B0BPREFACE ................................................................................................................................. IX
1B1BAbout this Manual ..................................................................................................................................... ix
Disclaimer ....................................................................................................................................................................... ix
2B2BConventions and References ...................................................................................................................... x
8B8BCautions and Warnings................................................................................................................................................... x
9B9BRecommended Standard Designations ......................................................................................................................... x
10B10BTrademarks ...................................................................................................................................................................... x
11B11BMetric Conversion ........................................................................................................................................................... x
3B3BElectrical Safety Notice ............................................................................................................................... x
4B4BInstallation Guidelines Regarding Power Line Quality ......................................................................... xi
5B5BWarranty Policy ........................................................................................................................................ xii
12B12BLimitations of Warranty ............................................................................................................................................... xii
13B13BExclusive Remedies ..................................................................................................................................................... xiii
6B6BCustomer Support .................................................................................................................................... xiv
14B14BOnline Customer Support ............................................................................................................................................ xiv
CHAPTER 1. INTRODUCTION ............................................................................................ 1–1
1.1 Introduction ................................................................................................................................. 1–1
1.2 Technology ................................................................................................................................... 1–2
1.3 Reliability ..................................................................................................................................... 1–2
1.4 Construction ................................................................................................................................ 1–2
1.5 Functional Description ............................................................................................................... 1–2
CHAPTER 2. INSTALLATION ............................................................................................. 2–1
2.1 Unpacking .................................................................................................................................... 2–1
2.2 Mounting ...................................................................................................................................... 2–2
2.3 LNB Connector Pinouts.............................................................................................................. 2–2
iii
LNB Low-Noise Block Downconverter Revision 0
Table of Contents MN-LNB
CHAPTER 3. PHYSICAL DESCRIPTIONS ......................................................................... 3–1
3.1 Dimensional Envelope ................................................................................................................ 3–1
3.1.1 X-Band LNB Dimensions ..................................................................................................................... 3–1
CHAPTER 4. SPECIFICATIONS ......................................................................................... 4–1
4.1 Summary of Specifications ......................................................................................................... 4–1
iv
1B1BAbout this Manual
This manual provides installation and operation information for the Comtech EF Data family of
Outdoor Low Noi se Block Down Converter (LNB). This manual is an informational document
intended for the persons responsible for the operation and maintenance of the LNB.
Disclaimer
Comtech EF Data has reviewed this manual thoroughly in order to provide an easy-to-use guide to
this equipment. All statements, technical information, and recommendations in this manual and in
any guides or related documents are believed reliable, but the accuracy and completeness thereof
are not guaranteed or warranted, and they are not intended to be, nor should they be understood to
be, representations or warranties concerning the products described. Further, Comtech EF Data
reserves the right to make changes in the specifications of the products described in this manual at
any time without notice and without obligation to notify any person of such changes.
If there ar e a ny questi ons regardin g this equi pment or the informati on in thi s manual, ple ase
contact the C o mte ch E F Dat a Cus t o mer S up p ort D epa r t me nt.
0B0BPREFACE
ix
LNB Low-Noise Block Downconverter Revision 0
indicates a potentially hazardous situation that, if not avoided, could
indicates a hazardous situation that, if not avoided, may result in
may also be used to indicate other unsafe
indicates information critical for proper equipment
Preface MN-LNB
2B2BConventions and References
8B8BCautions and Warnings
WARNING
result in death or serious injury.
CAUTION
minor or moderate injury. CAUTION
practices or risks of property damage.
IMPOR TANT
or
NOTE
function, or a s tatement that is as sociated with the task being performed.
9B9BRecommended Stand ard Designations
Recommended Standard (RS) Designations have been superseded by the new designation of the
Electronic Industries Association (EIA). References to the old designations are shown only when
depicting actual text displayed (e.g., RS-232, RS-485, etc.) via serial remote or Ethernet operation
of the unit. All other references in this m an ual w ill use the EIA designations.
10B10BTrademarks
Other product names mentioned in this manual may be trademarks or registered trademarks of
their respective companies and are hereby acknowledged.
11B11BMetric Conversion
Metric conversion information is located on the insi de back cover of this manual. This i nformation
is provided to assist the operator in cross-referencing non-metric to metric conversions.
3B3BElectrical Safety Notice
This equipment has been designed to minimize exposure of personnel to hazards. For further
information, contact Comtech EF Data, Customer Support Department. The operators and
technicians must:
• Know how to work around, with, and on high voltage equipment.
• Exercise every precaution to ensure personnel safety.
• Exercise extreme care when working near high voltages.
• Be familiar with the warnings presented in this manual.
x
LNB Low-Noise Block Downconverter Revision 0
IM P O RTA N T
Comtech EF Data has become familiar with the varying quality of the AC
Preface MN-LNB
4B4BInstallation Guidelines Regarding Power Line Quality
The LNB is reliant on a continuous DC power source and high stability 10MHz reference for
operation. These can be supplied by L Band modem with optional LNB supply and 10MHz reference
over outdoor coaxial cable or at the antenna from Comtech EF Data LPOD family of outdoor amplifier
BUCs with optional LNB supply feature. In the case where the LNB is mated with our LPOD product the
following cautions should apply.
power grid around the world. Observing the following installation guidelines
should help ensure a reliable installation.
• Surge suppr ession: High voltage surges can cause failure of the power supply. These surges
are typically caused by circuit switching on the main AC power grid, erratic generator
operation, and also by lightning strikes. While the LPOD does have built in surge
suppression, if the unit is to be installed in a location with questionable power grid quality,
Comtech EF Data recommends installation of additional power conditioning/surge
suppression at the power junction box.
• Grounding: The LPOD provides a grounding terminal. This is provided to allow the user to
ground the LPOD to the antenna’s grounding network. All components installed at the
antenna should be grounded to a common grounding point at the antenna.
• Electrical welding: If welding needs to take place at the antenna, disconnect all cables from
the LPOD except for the ground wire. Cap all RF connections with terminations. This will
prevent damage to the input/output circuitry of the LPOD.
• Lightning: Lightning strikes on or around the antenna will generate extremely high voltages
on all cables connected to the LPOD. Depending on the severity of the strike, the LPOD’s
internal surge protection combined with the recommended external suppression may protect
the LPOD’s power supply. However, if the installation will be in an area with a high
probability of lightning strikes, Comtech EF Data recommends the installation of surge
suppression on the RF and IF cables. One source of these suppressors is PolyPhaser
(
2Hwww.polyphaser.com).
xi
Loading...