Comtech EF Data LNAS User manual

LNAS
Low Noise Amplifier Series
Installation and Operation Manual
Part Number MN-LNAS
Revision 2
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.

Low Noise Amplifier Series
Revision 2
MN-LNAS
Copyright © 2021 Comtech EF Data. All rights reserved. Printed in the USA.
Comtech EF Data, 2114 West 7th Street, Tempe, Arizona 85281 USA, 480.333.2200, FAX: [phone]
Revision History
Rev Date Description
0 - Initial Release.
1 2017 Unknown
2 Aug 2021 Updated formatting to incorporate current styles.
Added X-band and Ka-band.

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Table of Contents TOC-1 MN-LNAS
TABLE OF CONTENTS
PREFACE ..................................................................................................................................................... 1
About this Manual.................................................................................................................................1
Conventions and References..............................................................................................................1
Patents and Trademarks..................................................................................................................1
Warnings, Cautions, and Notes .......................................................................................................1
Examples of Multi-Hazard Notices...................................................................................................2
Recommended Standard Designations...........................................................................................2
Safety and Compliance........................................................................................................................2
Electrical Safety and Compliance .................................................................................................... 2
Grounding ........................................................................................................................................ 3
Fuses................................................................................................................................................ 3
Class I Pluggable Equipment Type A-Protective Earthing...............................................................3
Galvanic Isolator Use.......................................................................................................................3
Restricted Access Location..............................................................................................................3
International Symbols.......................................................................................................................4
Operating Environment.................................................................................................................... 4
European Union Electromagnetic Compatibility (EMC) Directive (2004/108/EC) ................................4
Regulatory Compliance .......................................................................................................................5
EMC (Electromagnetic Compatibility)..............................................................................................5
South Korean Electromagnetic Compatibility .................................................................................. 5
European Union Telecommunications Terminal Equipment Directive (91/263/EEC) ......................5
CE Mark 5
Product Support ...................................................................................................................................6
Comtech EF Data Headquarters..........................................................................................................6
Warranty Policy.....................................................................................................................................6
Limitations of Warranty ....................................................................................................................6
Exclusive Remedies.........................................................................................................................7
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
CHAPTER 2. INSTALLATION ............................................................................................................2–1
2.1 Shipping Contents ..................................................................................................................2–1
2.2 Installation Tools.....................................................................................................................2–1
2.3 LNA Connector Pinouts..........................................................................................................2–2
CHAPTER 3. DESCRIPTION..............................................................................................................3–1
3.1 Introduction .............................................................................................................................3–1
3.2 C-band LNA Dimensions........................................................................................................3–3
3.3 X-band LNA Dimensions ........................................................................................................3–4
3.4 Ku-band LNA Dimensions......................................................................................................3–5
3.5 Ka-band LNA Dimensions......................................................................................................3–6
CHAPTER 4. SPECIFICATIONS ........................................................................................................ 4–1
4.1 Summary of Specifications....................................................................................................4–1
4.2 Power Consumption ...............................................................................................................4–2
4.3 Fuses........................................................................................................................................4–2

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Table of Contents TOC-2 MN-LNAS
4.4 Cables and Connectors..........................................................................................................4–2
4.5 Operating Requirements for Regulatory Compliance.........................................................4–2
CHAPTER 5. REDUNDANCY.............................................................................................................5–1
5.1 Typical System Noise Temperature.......................................................................................5–1
5.1.1 1:1 Redundant LNA System..........................................................................................5–1
5.1.2 1:2 Redundant LNA System..........................................................................................5–1
5.2 Block Diagrams.......................................................................................................................5–2
LIST OF TABLES
Table 2-1. DC Power Connector, 4-Pin.....................................................................................................2–2
Table 2-2. DC Power Connector, 6-Pin.....................................................................................................2–2
Table 5-1. Typical Noise Temperature in Kelvin at 23°C...........................................................................5–1
LIST OF FIGURES
Figure 1-1. C-band LNA............................................................................................................................1–1
Figure 1-2. X-band LNA............................................................................................................................1–1
Figure 1-3. Ku-band LNA..........................................................................................................................1–2
Figure 1-4. Ka-band LNA..........................................................................................................................1–2
Figure 3-1. C-band LNA Dimensions ........................................................................................................3–3
Figure 3-2. X-band LNA Dimensions ........................................................................................................3–4
Figure 3-3. Ku-band LNA Dimensions ......................................................................................................3–5
Figure 3-4. Ka-band LNA Dimensions ......................................................................................................3–6
Figure 5-1. 1:1 Redundant LNA System Block Diagram...........................................................................5–2
Figure 5-2. 1:2 Redundant LNA System Block Diagram...........................................................................5–2

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Acronym List
Acronym Description
CEFD
Comtech EF Data
GaA FET GalliumArsenide Feed EffectTransistor
HEMT High Electron Mobility Transistors
LNA Low Noise Amplifier
LNB Low-noise Block Down Converter
MTBF Mean Time Between Failures
VSAT Very SmallAmplifier Terminals

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Table of Contents TOC-4 MN-LNAS
Units of Measurement
Unit / Symbol
Definition
Ω
Ohm
A
Ampere
bps
bits per second
˚C
Celsius (degrees)
Hz
Hertz
kHz
kiloHertz
dB
decibel
dBc
Decibels relative to the carrier
dBm
Decibel-milliwatts
˚F
Fahrenheit (degrees)
GHz
Gigahertz
Kbps
Kilobit per second
kg
kilogram
ksps
Kilosymbols per second
lbs.
pounds
mA
Milli-amp
Mbps
Megabit per second
MHz
Megahertz
mm
millimeter
ms
millisecond
Msps
Megasymbol per second
mW
milliwatt
in.
inch
Pps
Packets per second
ųF
micro-farads
W
Watt
V
Volt
VAC
VoltAlternating Current
VDC
Volt Direct Current

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Preface Preface-1 MN-LNAS
PREFACE
About this Manual
This manual provides installation and operation information for the Comtech EF Data Low Noise
Amplifier (LNA) Series. This is a document intended for the persons responsible for the operation
and maintenance of the LNAs.
Conventions and References
Patents and Trademarks
See all of Comtech EF Data's Patents and Patents Pending at http://patents.comtechefdata.com.
Comtech EF Data acknowledges that all trademarks are the property of the trademark owners.
Warnings, Cautions, and Notes
A WARNING GIVES INFORMATION ABOUT A POSSIBLE HAZARD THAT MAY
CAUSE DEATH OR SERIOUS INJURY.
A CAUTION gives information about a possible hazard that MAY CAUSE
INJURY or PROPERTY DAMAGE.
A NOTE gives important information about a task or the equipment.
A REFERENCE directs you to additional information about a task or the
equipment.

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Preface Preface-2 MN-LNAS
Examples of Multi-Hazard Notices
Recommended Standard Designations
The new designation of the Electronic Industries Association (EIA) supersedes the Recommended
Standard (RS) designations. References to the old designations may be shown when depicting
actual text (e.g., RS-232) displayed on the Unit. All other references in the manual refer to EIA
designations.
Carefully review the following information.
Safety and Compliance
Electrical Safety and Compliance
The unit complies with the EN 60950 Safety of Information Technology Equipment (Including
Electrical Business Machines)safety standard.
Connect the unit to a power system that has separate ground, line and
neutral conductors. Do not connect the unit without a direct connection to
ground.

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Preface Preface-3 MN-LNAS
Grounding
PROPER GROUNDING PROTECTION IS REQUIRED: The installation instructions
require that the integrity of the protective earth must be ensured, and that the
equipment must be connected to the protective earth connection at all times.
•In Finland: "Laite on liitettävä suojamaadoituskoskettimilla varustettuun
pistorasiaan."
•In Norway: “Apparatet må tilkoples jordet stikkontakt.”
•
In Sweden: “Apparaten skall anslutas till jordat uttag.”
Fuses
For continued operator safety, always replace the fuses with the correct type and
rating.
Class I Pluggable Equipment Type A-Protective Earthing
The cable distribution system/telecommunication network of this product relies on protective
earthing and the integrity of the protective earthing must be insured
In Finland:
"Laite on liitettävä suojakoskettimilla varustettuun pistorasiaan"
In Norway:
“Apparatet må tilkoples jordet stikkontakt”
In Sweden:
“Apparaten skall anslutas till jordat uttag”
Galvanic Isolator Use
Utrustning som är kopplad till skyddsjord via jordat vägguttag och/eller via annan utrustning och
samtidigt är kopplad till kabel-TV nät kan i visa fall medfőra risk főr brand. Főr att undvika detta
skall vid anslutning av utrustningen till kabel-TV nät galvanisk isolator finnas mellan utrustningen
och kabel-TV nätet
Restricted Access Location
In Nordic Countries, equipotential bonding should be applied using the permanently connected
ground stud by a qualified service person.

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Preface Preface-4 MN-LNAS
International Symbols
Symbol
Definition
Symbol
Definition
~ Alternating Current Protective Earth
Fuse Chassis Ground
Operating Environment
Maximum storage temperature allowed is -4 to +158°F (-20 to +70°C).
Operation in vehicles or other transportable installations that are equipped to provide a stable
environment is permitted. If such vehicles do not provide a stable environment, safety of the
equipment to EN 60950 may not be guaranteed.
DO NOT OPERATE THE UNIT IN ANY OF THESE EXTREME OPERATING
CONDITIONS:
•AMBIENT TEMPERATURES LESS THAN 0°C (32°F) OR MORE THAN 50°C
(122°F)
•PRECIPITATION, CONDENSATION, OR HUMID ATMOSPHERES OF MORE
THAN 95% RELATIVE HUMIDITY
•UNPRESSURIZED ALTITUDES OF MORE THAN 2000 METRES (6561.7
FEET)
•EXCESSIVE DUST
•FLAMMABLE GASES
•CORROSIVE OR EXPLOSIVE ATMOSPHERES.
European Union Electromagnetic Compatibility (EMC) Directive
(2004/108/EC)
In accordance with European Directive 89/336/EEC, independent testing showed that the
Revision 2 complied with these standards:
Emissions: EN 55022 Class B: Limits and methods of measurement of radio interference
characteristics of Information Technology Equipment
(Also tested to FCC Part 15 Class B)
Immunity: EN 50082 Part 1: Generic immunity standard, Part 1: Domestic, commercial and light
industrial environment.

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Preface Preface-5 MN-LNAS
Additionally, the Revision 2 complied with these standards:
•EN 61000-3-2 Harmonic Currents Emission
•EN 61000-3-3 Voltage Fluctuations and Flicker
•EN 61000-4-2 ESD Immunity
•EN 61000-4-4 EFT Burst Immunity
•EN 61000-4-5 Surge Immunity
•EN 61000-4-6 RF Conducted Immunity
•EN 61000-4-8 Power frequency Magnetic Field Immunity
•EN 61000-4-9 Pulse Magnetic Field Immunity
•EN 61000-4-11 Voltage Dips, Interruptions, and Variations Immunity
•EN 61000-4-13 Immunity to Harmonics
Regulatory Compliance
EMC (Electromagnetic Compatibility)
South Korean Electromagnetic Compatibility
Unofficial translation:
Class A: EMC Registration is done on this equipment for business use only (Class A).
Product seller and user should notice that this equipment is not for household use.
Class B: EMC Registration is done on this equipment mainly for household use (Class B)
and also can be used in all areas.
European Union Telecommunications Terminal Equipment Directive
(91/263/EEC)
In accordance with the European Union Telecommunications Terminal Equipment Directive
91/263/EEC, do not directly connect the unit to the Public Telecommunications Network.
CE Mark
Comtech EF Data declares that the unit meets the necessary requirements for the CE Mark.

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Preface Preface-6 MN-LNAS
Product Support
For all product support, please call:
+1.240.243.1880
+1.866.472.3963 (toll free USA)
Comtech EF Data Headquarters
http://www.comtechefdata.com
Comtech EF Data Corp.
2114 West 7th Street
Tempe, Arizona USA 85281
+1.480.333.2200
Warranty Policy
Comtech EF Data products are warranted against defects in material and workmanship for a
specific period from the date of shipment, and this period varies by product. In most cases, the
warranty period is two years. During the warranty period, Comtech EF Data will, at its option,
repair or replace products that prove to be defective. Repairs are warranted for the remainder of
the original warranty or a 90 day extended warranty, whichever is longer. Contact Comtech EF
Data for the warranty period specific to the product purchased.
For equipment under warranty, the owner is responsible for freight to Comtech EF Data and all
related customs, taxes, tariffs, insurance, etc. Comtech EF Data is responsible for the freight
charges only for return of the equipment from the factory to the owner. Comtech EF Data will
return the equipment by the same method (i.e., Air, Express, Surface) as the equipment was sent
to Comtech EF Data.
All equipment returned for warranty repair must have a valid RMA number issued prior to return
and be marked clearly on the return packaging. Comtech EF Data strongly recommends all
equipment be returned in its original packaging.
Comtech EF Data Corporation’s obligations under this warranty are limited to repair or
replacement of failed parts, and the return shipment to the buyer of the repaired or replaced
parts.
Limitations of Warranty
The warranty does not apply to any part of a product that has been installed, altered, repaired, or
misused in any way that, in the opinion of Comtech EF Data Corporation, would affect the
reliability or detracts from the performance of any part of the product, or is damaged as the result
of use in a way or with equipment that had not been previously approved by Comtech EF Data
Corporation.
The warranty does not apply to any product or parts thereof where the serial number or the serial
number of any of its parts has been altered, defaced, or removed.
The warranty does not cover damage or loss incurred in transportation of the product.

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The warranty does not cover replacement or repair necessitated by loss or damage from any
cause beyond the control of Comtech EF Data Corporation, such as lightning or other natural and
weather-related events or wartime environments.
The warranty does not cover any labor involved in the removal and or reinstallation of warranted
equipment or parts on site, or any labor required to diagnose the necessity for repair or
replacement.
The warranty excludes any responsibility by Comtech EF Data Corporation for incidental or
consequential damages arising from the use of the equipment or products, or for any inability to
use them either separate from or in combination with any other equipment or products.
A fixed charge established for each product will be imposed for all equipment returned for
warranty repair where Comtech EF Data Corporation cannot identify the cause of the reported
failure.
Exclusive Remedies
Comtech EF Data Corporation’s warranty, as stated is in lieu of all other warranties, expressed,
implied, or statutory, including those of merchantability and fitness for a particular purpose. The
buyer shall pass on to any purchaser, lessee, or other user of Comtech EF Data Corporation’s
products, the aforementioned warranty, and shall indemnify and hold harmless Comtech EF Data
Corporation from any claims or liability of such purchaser, lessee, or user based upon allegations
that the buyer, its agents, or employees have made additional warranties or representations as to
product preference or use.
The remedies provided herein are the buyer’s sole and exclusive remedies. Comtech EF Data
shall not be liable for any direct, indirect, special, incidental, or consequential damages, whether
based on contract, tort, or any other legal theory.

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Preface Preface-8 MN-LNAS
Notes:

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Introduction 1–1 MN-LNAS
Chapter 1. INTRODUCTION
1.1 Introduction
The Comtech EF Data (CEFD) Low Noise Amplifier (LNA) series includes LNA and redundant
LNA/LB systems available in C-band (Figure 1-1), X-band (Figure 1-2), Ku-band (Figure 1-3),
and Ka-band (Figure 1-4). They meet or exceed system requirements for commercial
geosynchronous satellites worldwide. Their compact design and rugged construction make them
ideal for transportable applications and severe environments.
The LNAs have a comprehensive set of options to accommodate systems ranging from Very
Small Amplifier Terminals (VSATs) to major earth stations. The redundant LNA/Low-noise Block
Down Converter (LNB) systems include primary and backup LNA(B)s and an automatic
switching controller. The case of primary LNA/LNB failure, fast automatic switchover to the
backup LNA/LNB minimizes downtime.
Figure 1-1. C-band LNA
Figure 1-2. X-band LNA

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Introduction 1–2 MN-LNAS
Figure 1-3. Ku-band LNA
Figure 1-4. Ka-band LNA
1.2 Technology
The amplifiers incorporate both High Electron Mobility Transistors (HEMT) devices for low noise
temperature performance and Gallium Arsenide Feed Effect Transistors (GaA FETs) devices for
low intermodulation. The units use surface mounted components for robotic manufacturing
techniques, thereby insuring maximum product consistency and enhanced reliability. The X-band
LNA includes integrated filtering to address adjacent power issues peculiar to demanding X-band
terminals.
1.3 Reliability
The amplifier series utilizes proprietary circuitry and high quality components to achieve a mean
time between failures (MTBF) in excess of 160,000 hours. Each unit is temperature cycled from
-40 to +60°C (-40 to 140°F).
1.4 Construction
The LNAs are housed in waterproof enclosures with a small profiles to better accommodate
redundancy configurations. The enclosures also provide a pressurizable, integral waveguide
flange. Subsystems
The one backup for one primary (1+1) and one backup for two primary (1+2) redundant LNA and
LNB systems are available complete with mounting plate, brackets, and indoor Redundancy
Controller/Power Supply (transmit reject filters, cables, and other integration materials are
offered, as required).

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Installation 2–1 MN-LNAS
Chapter 2. INSTALLATION
2.1 Shipping Contents
Inspect shipping containers for damage. If shipping containers are damaged, keep them until the
contents of the shipment have been carefully inspected and checked for normal operation.
The modulator and manual are packaged in pre-formed, reusable, cardboard cartons containing
foam spacing for maximum shipping protection.
CAUTION
Do not use any cutting tool that will extend more than 1-inch into the
container. This can cause damage to the LNA.
Do these steps:
1. Cut the tape at the top of the carton indicated by OPEN THIS END.
2. Remove the cardboard/foam space covering the LNA.
3. Remove the LNA from the carton.
4. Save the packing material for storage or reshipment purposes.
5. Inspect the equipment for any possible damage incurred during shipment.
6. Check the equipment against the packing list to ensure the shipment is correct.
7. Refer to the following chapters/sections for further installation instructions.
2.2 Installation Tools
No special tools are required.

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Installation 2–2 MN-LNAS
2.3 LNA Connector Pinouts
The LNA can be supplied with the following connector configurations, depending on the model
and options:
•4-pin
•6-pin
Table 2-1. DC Power Connector, 4-Pin
Pin # CLNA (Standard) XLNA (Standard) KLNA (Standard) Ka LNA (Standard)
A
+Vdc
+Vdc
+Vdc
+Vdc
B
GND
GND
GND
GND
C
Normally Open
Normally Open
Normally Open
Normally Open
D
Fault Common
Fault Common
Fault Common
Fault Common
Table 2-2. DC Power Connector, 6-Pin
Pin # CLNA (Standard) XLNA (Standard) KLNA (Standard) Ka LNA (Standard)
A +Vdc +Vdc +Vdc +Vdc
B GND GND GND GND
C Normally Open GND GND GND
D Fault Common Normally Closed Normally Closed Normally Closed
E Normally Closed Fault Common Fault Common Fault Common
F N/C Normally Open Normally Open Normally Open

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Functional and Physical Descriptions 3–1 MN-LNAS
Chapter 3. DESCRIPTION
3.1 Introduction
All dimensions are in English units (metric units are in parentheses).

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Functional and Physical Descriptions 3–2 MN-LNAS
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