Comtech EF Data KPA-080 User manual

Part Number MN/KPA80IN.IOM Revision 0
KPA080
Ku-Band Solid-State Power Amplifie
r
Installation and O
p
eration Manual

Copyright © Comtech EFData, 2000. All rights reserved. Printed in the USA.
Comtech EFData, 2114 West 7th Street, Tempe, Arizona 85281 USA, [phone], FAX: [phone].
KPA080
Ku-Band Solid-State Power Amplifier
Installation and Operation Manual
Part Number MN/KPA80IN.IOM
Revision 0
December 15, 2000
Comtech EFData is an ISO 9001
Registered Company.

ii Rev. 0
Customer Support
Contact the Comtech EFData Customer Support Department for:
• Product support or training
• Information on upgrading or returning a product
• Reporting comments or suggestions concerning manuals
A Customer Support representative may be reached at:
Comtech EFData
Attention: Customer Support Department
2114 West 7th Street
Tempe, Arizona 85281 USA
480.333.2200 (Main Comtech EFData Number)
480.333.4357 (Customer Support Desk)
480.333.2161 FAX
or, E-Mail can be sent to the Customer Support Department at:
[e-mail]
Contact us via the web at www.comtechefdata.com.
1. To return a Comtech EFData product (in-warranty and out-of-warranty) for
repair or replacement:
2. Request a Return Material Authorization (RMA) number from the Comtech
EFData Customer Support Department.
3. Be prepared to supply the Customer Support representative with the model
number, serial number, and a description of the problem.
4. To ensure that the product is not damaged during shipping, pack the product in
its original shipping carton/packaging.
5. Ship the product back to Comtech EFData. (Shipping charges should be prepaid.)
For more information regarding the warranty policies, see Warranty Policy, p. x.

Rev. 0 iii
Table of Contents
Customer Support.......................................................................................................................................................ii
About this Manual ....................................................................................................................................................vii
Conventions and References.......................................................................................................................................vii
Safety Notices ............................................................................................................................................................vii
Reporting Comments or Suggestions Concerning this Manual .................................................................................viii
European EMC Directive..........................................................................................................................................ix
Warranty Policy.......................................................................................................................................................... x
Limitations of Warranty................................................................................................................................................ x
Exclusive Remedies...................................................................................................................................................... x
CHAPTER 1. INTRODUCTION.......................................................................................................... 1-1
1.1 Overview.....................................................................................................................................................1-1
1.2 Functional Description..............................................................................................................................1-3
1.2.1 Front Panel...................................................................................................................................................1-3
1.2.2 Front Panel Indicators..................................................................................................................................1-4
1.2.3 Built-in Redundancy Controller...................................................................................................................1-4
1.3 Specifications..............................................................................................................................................1-5
CHAPTER 2. INSTALLATION ........................................................................................................... 2-1
2.1 Unpacking...................................................................................................................................................2-1
2.2 Installation..................................................................................................................................................2-2
2.2.1 Prime Power Connection.............................................................................................................................2-2
2.2.2 Cable Connections.......................................................................................................................................2-3
2.2.3 Optional: Redundancy Kit Installation ........................................................................................................2-3
2.3 External Connections ................................................................................................................................2-6
2.3.1 Rear Panel Connections...............................................................................................................................2-6

Preface KPA080 Ku-Band Solid-State Power Amplifier
iv Rev. 0
2.4 Dimensional and Outline Diagrams.........................................................................................................2-8
CHAPTER 3. OPERATION ................................................................................................................ 3-1
3.1 General .......................................................................................................................................................3-1
3.1.1 Switching On...............................................................................................................................................3-1
3.2 Operation....................................................................................................................................................3-3
3.2.1 SSPA Commands ........................................................................................................................................3-5
3.2.2 Configuration Menu.....................................................................................................................................3-9
3.2.3 Monitor Status Menu.................................................................................................................................3-11
3.2.4 Current Faults Menu..................................................................................................................................3-13
3.2.5 Stored Faults Menu....................................................................................................................................3-15
3.2.6 Utility Menu ..............................................................................................................................................3-17
CHAPTER 4. REDUNDANT CONFIGURATION ............................................................................... 4-1
4.1 General .......................................................................................................................................................4-1
4.2 Redundancy Operation.............................................................................................................................4-1
4.2.1 Gain Equalization of Redundant Units........................................................................................................4-3
CHAPTER 5. REMOTE CONTROL SPECIFICATION ....................................................................... 5-1
5.1 General .......................................................................................................................................................5-1
5.2 Electrical Interface ....................................................................................................................................5-2
5.3 Interface Connector...................................................................................................................................5-2
5.4 Cables..........................................................................................................................................................5-3
5.5 Protocol.......................................................................................................................................................5-4
5.5.1 Format..........................................................................................................................................................5-4
5.6 Access Methods..........................................................................................................................................5-5
5.6.1 Direct Access...............................................................................................................................................5-5
5.6.2 Indirect Access ............................................................................................................................................5-5
5.7 Addressess ..................................................................................................................................................5-6
5.7.1 Physical Address..........................................................................................................................................5-6
5.7.2 Virtual Address............................................................................................................................................5-6
5.7.3 Message Structure........................................................................................................................................5-6
5.7.4 Start Character.............................................................................................................................................5-6
5.7.5 Device Address............................................................................................................................................5-7
5.7.6 Command.....................................................................................................................................................5-7
5.8 Confirmation Response.............................................................................................................................5-7
5.8.1 Error Response ............................................................................................................................................5-7
5.8.2 End Of Message...........................................................................................................................................5-8
5.9 Command/Response Pairs ........................................................................................................................5-9

KPA080 Ku-Band Solid-State Power Amplifier Preface
Rev. 0 v
5.9.1 Utility Commands........................................................................................................................................5-9
5.9.2 Configuration Commands..........................................................................................................................5-10
5.9.3 Mode Commands.......................................................................................................................................5-11
5.9.4 Status Commands ......................................................................................................................................5-12
5.9.5 Stored Alarms............................................................................................................................................5-16
5.9.6 Error Processing ........................................................................................................................................5-17
5.9.7 Configuration Errors..................................................................................................................................5-17
5.9.8 Time-Outs..................................................................................................................................................5-17
5.10 Command Summaries.............................................................................................................................5-18
CHAPTER 6. MAINTENANCE AND TROUBLESHOOTING ............................................................. 6-1
6.1 General .......................................................................................................................................................6-1
6.2 Maintenance Testing .................................................................................................................................6-2
6.2.1 Test Point Samples ......................................................................................................................................6-2
6.3 Troubleshooting.........................................................................................................................................6-2
APPENDIX A. PARTS LIST/WIRING DIAGRAM...............................................................................A–1
A.1 Parts List .................................................................................................................................................. A–1
A.2 Wiring Diagram....................................................................................................................................... A–4

Preface KPA080 Ku-Band Solid-State Power Amplifier
vi Rev. 0
Figures
Figure 1-1. KPA080..................................................................................................................................................1-1
Figure 1-2. Functional Block Diagram .....................................................................................................................1-2
Figure 2-1. Redundancy Installation.........................................................................................................................2-4
Figure 0-1. Dimensional Diagram (inches)...............................................................................................................2-9
Figure 0-3. Redundancy Outline Diagram .............................................................................................................2-10
Figure 3-1. SSPA Operating Command Functions...................................................................................................3-4
Figure 3-2A. Configuration Menu Commands (Single Configuration)...................................................................3-7
Figure 3-3. Monitor Status Menu Commands.........................................................................................................3-10
Figure 3-4. Current Faults Menu Commands..........................................................................................................3-12
Figure 3-5. Stored Faults Menu Commands ...........................................................................................................3-14
Figure 3-6. Utility Functions Menu Commands .....................................................................................................3-16
Figure 4-1. Control Cabling of a 1:1 System............................................................................................................4-2
Figure 4-2. Control Cabling of a 1:2 System............................................................................................................4-3
Tables
Table 1-1. Operating Functions.................................................................................................................................1-3
Table 1-2. Front Panel Indicators..............................................................................................................................1-4
Table 2-1. Cable Connections...................................................................................................................................2-3
Table 2-2. Redundancy Kit.......................................................................................................................................2-5
Table 2-3. Rear Panel Connectors.............................................................................................................................2-6
Table 2-4. Redundant Loop Interface, Connector J4................................................................................................2-7
Table 2-5. Customer Discrete Control, Connector J5...............................................................................................2-7
Table 2-6. EIA-232/EIA-485 Interface, Connector J6..............................................................................................2-8
Table 2-7. Waveguide Switch Interface, Connector J7.............................................................................................2-8
Table 5-1. Protocol Description...............................................................................................................................5-4
Table 5-2. Possible Time-Out Sources....................................................................................................................5-17
Table 5-3. Remote Control Summary.....................................................................................................................5-18
Table 5-4. Commands Supported by Virtual Addressing Mode.............................................................................5-19
Table 6-1. Troubleshooting.......................................................................................................................................6-3

KPA080 Ku-Band Solid-State Power Amplifier Preface
Rev. 0 vii
About this Manual
This manual provides installation and operation information for the Comtech EFData
KPA080 Ku-Band Solid-State Power Amplifier. This is a technical document intended
for earth station engineers, technicians, and operators responsible for the operation and
maintenance of the KPA080.
Conventions and References
Cautions and Warnings
CAUTION
CAUTION indicates a hazardous situation that, if not avoided, may result in
minor or moderate injury. CAUTION may also be used to indicate other
unsafe practices or risks of property damage.
WARNING
WARNING indicates a potentially hazardous situation that, if not avoided,
could result in death or serious injury.
Safety Notices
This equipment has been designed to minimize exposure of personnel to hazards. The
operators and technicians must:
CAUTION
• Know how to work around, with, and on high voltage and high RF power
level equipment.
• Exercise every precaution to ensure personnel safety.
• Exercise extreme care when working near high voltages/high RF power
level equipment.
• Be familiar with the warning presented in this manual.
• Disconnect the power supply cord before servicing the SSPA.
WARNING
Lithium Battery Replacement: There is a damage that the Lithium battery
on the M&C assembly will explode if the battery is incorrectly replaced.
Replace only with the same or equivalent type battery recommended by the
manufacturer. Dispose of used batteries according to the Lithium battery
manufacturer’s instructions.

Preface KPA080 Ku-Band Solid-State Power Amplifier
viii Rev. 0
Metric Conversion
Metric conversion information is located on the inside back cover of this manual. This
information is provided to assist the operator in cross-referencing English to Metric
conversions.
Recommended Standard 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 on the screen of the unit (RS-232, RS-
485, etc.). All other references in the manual will be shown with the EIA designations
(EIA-232, EIA-485, etc.) only.
Military Standards
References to “MIL-STD-188” apply to the 114A series (i.e., MIL-STD-188-114A),
which provides electrical and functional characteristics of the unbalanced and balanced
voltage digital interface circuits applicable to both long haul and tactical
communications. Specifically, these references apply to the MIL-STD-188-114A
electrical characteristics for a balanced voltage digital interface circuit, Type 1 generator,
for the full range of data rates. For more information, refer to the Department of Defense
(DOD) MIL-STD-188-114A, “Electrical Characteristics of Digital Interface Circuits.”
Trademarks
Windows is a trademark of the Microsoft Corporation.
Other product names mentioned in this manual may be trademarks or registered
trademarks of their respective companies and are hereby acknowledged.
Reporting Comments or Suggestions Concerning this Manual
Comments and suggestions regarding the content and design of this manual will be
appreciated. To submit comments, please contact the Comtech EFData Customer Support
Department.

KPA080 Ku-Band Solid-State Power Amplifier Preface
Rev. 0 ix
European EMC Directive
In order to meet the European Electro-Magnetic Compatibility (EMC) Directive
(EN55022, EN50082-1), properly shielded cables for DATA I/O are required. More
specifically, these cables must be shielded from end-to-end, ensuring a continuous
ground shield.
The following information is applicable for the European Low Voltage Directive
(EN60950):
<HAR> Type of power cord required for use in the European Community.
!CAUTION: Double-pole/Neutral Fusing
ACHTUNG: Zweipolige bzw. Neutralleiter-Sicherung
International Symbols:
Alternating Current.
Fuse.
Safety Ground.
Chassis Ground.
Note: For additional symbols, refer to “Cautions and Warnings” listed earlier in this
preface.

Preface KPA080 Ku-Band Solid-State Power Amplifier
x Rev. 0
Warranty Policy
This Comtech EFData product is warranted against defects in material and workmanship
for a period of 2 years from the date of shipment. During the warranty period, Comtech
EFData will, at its option, repair or replace products that prove to be defective.
For equipment under warranty, the customer is responsible for freight to Comtech
EFData and all related custom, taxes, tariffs, insurance, etc. Comtech EFData is
responsible for the freight charges only for return of the equipment from the factory to
the customer. Comtech EFData will return the equipment by the same method (i.e., Air,
Express, Surface) as the equipment was sent to Comtech EFData.
Limitations of Warranty
The foregoing warranty shall not apply to defects resulting from improper installation or
maintenance, abuse, unauthorized modification, or operation outside of environmental
specifications for the product, or, for damages that occur due to improper repackaging of
equipment for return to Comtech EFData.
No other warranty is expressed or implied. Comtech EFData specifically disclaims the
implied warranties of merchantability and fitness for particular purpose.
Exclusive Remedies
The remedies provided herein are the buyer's sole and exclusive remedies. Comtech
EFData shall not be liable for any direct, indirect, special, incidental, or consequential
damages, whether based on contract, tort, or any other legal theory.
Disclaimer
Comtech EFData has reviewed this manual thoroughly in order that it will be an easy-to-
use guide to your 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 EFData 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 you have any questions regarding your equipment or the information in this manual,
please contact the Comtech EFData Customer Support Department.

Rev. 0 1-1
1Chapter 1.
INTRODUCTION
This chapter describes the instructions on the installation, operation and maintenance of
the KPA080-4045-I Ku-Band Solid-State High Power Amplifier (SSPA).
1.1 Overview
The KPA080-4045-I Ku-Band Solid-State High Power Amplifier is designed for use in
communication systems, or in satellite up-link data systems. The SSPA (Figure 1-1)
operates over the RF input frequency range of 14.0 to 14.5 GHZ.
Figure 1-1. KPA080

Introduction KPA080 Ku-Band Solid-State Power Amplifier
1-2 Rev. 0
The RF output power is 48.5 dBm minimum at 1 dB compression. A functional block
diagram is shown in Figure 1-2.
Figure 1-2. Functional Block Diagram
The SSPA is designed to be hard mounted in a standard 19-inch (48 cm) rack or cabinet,
or to be rack mounted using Comtech EFData slide mechanisms provided with the SSPA
to allow it to be serviced without its removal from the rack. Two internally mounted
exhaust fans are mounted on the chassis for cooling. An AC power connector, with an
On/Off switch, is located on the rear on the chassis. A six-foot AC power cord is supplied
with the SSPA.
All operator controls, indicators, and displays for local and remote operation as well as
the RF Input and Output sample test ports are located on the front panel of the SSPA.
Connectors for the external interface connections are located on the rear of the SSPA
chassis.
RF INPUT
MONITOR & CONTROL
AUX. PS
& SWITCH
CONTROL
+12V
-12V
CONTROL
& MONITOR
28Vdc PS
PS #1 9Vdc
-5Vdc
Interlock
FAN2
FAN1
AC
POWER
INPUT
PS #2 9Vdc
INPUT
SAMPLE
OUTPUT
SAMPLE
POWER CONDITIONING & CONTROL
CUST.
GAIN
CTRL
TEMP.
COMP.
-5V -5V9V 9V
-5V -12V 12V
OUTPUT
POWER
DETECTOR
REFLECTED
POWER
DETECTOR
Keypad
&
Display
9V #1
9V #2
9V #1 9V #2
-5Vdc
Interlock
J1
J8
J9
J6COM1
J3
REDUND.
SWITCH
CONTROL
J7
J5 DISCRETE
CONTROL
REDUND.
LOOP
J4
J2 RF
OUTPUT
(W/G)
KPA 80
BLOCK DIAGRAM

KPA080 Ku-Band Solid-State Power Amplifier Introduction
Rev. 0 1-3
1.2 Functional Description
The SSPA consists of a chassis, power supplies, fan assembly, front panel assembly,
monitor/control processor (MCP) and a Comtech EFData solid-state power amplifier
module. The amplifier is designed using a Comtech EFData low loss combining
technique and an MCP based temperature versus gain compensation.
1.2.1 Front Panel
The front panel contains a User Interface Key-Pad which is used by a local operator to
input commands to the SSPA. The keypad is used to select the configuration for
operating and monitoring the status of the SSPA.
In conjunction with the front panel two line, 24-character, LCD display, the keypad
allows the operator to select one of five configurations. The configuration functions are:
• Configuration Menu
• Monitor Status Menu
• Currents Faults Menu
• Stored Faults Menu
• Utility Functions Menu
Refer to Table 1-1 for logical function of each keypad entry:
Table 1-1. Operating Functions
Item Function Description Reference
[ENTER] Enters commands into the converter. ENT
CLR Clears commands and data selected and not entered. CLR
→Arrow Key Selects functions and the menu operating data. →
←Arrow key Selects functions and the menu operating data. ←
↑Arrow Key Selects functions and the menu operating data. ↑
↓Arrow Key Selects functions and the menu operating data. ↓
LCD Display Displays commands and data entered into the keypad.
GREEN Indicator Prime Power is applied when the light is On. POWER ON
YELLOW Indicator Transmit function operating when the light is On. TRANSMIT ON
YELLOW Indicator In REMOTE CONTROL Mode, when the light is ON. REMOTE
YELLOW Indicator Operating On-Line to RX data when the light is On. ON-LINE
RED Indicator Fault condition exists when the light is On. FAULT
RED Indicator Faults stored and logged when the light is On. STORED FAULT
Input Sample Type N connector test point to sample RF input. SAMPLE INPUT
Output Sample Type N connector test point to sample RF output. SAMPLE OUTPUT

Introduction KPA080 Ku-Band Solid-State Power Amplifier
1-4 Rev. 0
1.2.2 Front Panel Indicators
There are six LED indicator lights on the front panel which indicate the status of the
SSPA and provide summary fault information. Refer to Table 1-2 for description of the
LED lamps:
Table 1-2. Front Panel Indicators
LED Lamp Condition
Fault Red Indicates that a fault condition exists when the LED light is
On.
Stored Fault Red Indicates that the fault has been logged and stored When the
LED light is On. The fault may, or may not, be active.
Power Status Green Indicates that power is applied to the SSPA when the LED
light is On.
TX ON Yellow Indicates that the transmit function of the SSPA is on when
the LED light is On. The indicator light reflects the actual
condition of the transmit function.
Online Yellow Indicates that the SSPA is operating on-line to transmit data.
Remote Yellow Indicates that the SSPA is being operated in the remote
control mode where commands and data are transferred via
an EIA-485 (EIA-232 is optional) serial
communications link.
1.2.3 Built-in Redundancy Controller
Each SSPA has the ability to function as a 1+1 or 1+2 redundancy controller in the
backup mode. The optional redundancy configuration is implemented by attaching a
ganged Waveguide/coax transfer switch(es) to input and output connectors of the
amplifiers with a combination coaxial cable and Waveguide kit. When the backup SSPA
is commanded into the controller mode, it monitors the online SSPA(s) for faults. A
faulted online unit may be disconnected and replaced without affecting the online power
amplifier.

KPA080 Ku-Band Solid-State Power Amplifier Introduction
Rev. 0 1-5
1.3 Specifications
Parameters Specifications
Input
Impedance 50Ω
Noise Figure 10 dB Typical, 15 dB max at max
gain
VSWR 1.25: 1 maximum
Connector SMA Female
Output
Frequency 14.0 to 14.5 GHz
Power 48.5 dBm minimum at 1 dB
Compression
Mute 60 dB
Impedance 50Ω
VSWR 1.25:1 maximum
Connector WR75G Waveguide
Gain
Linear 65 dB minimum, 68 dB Typical
Adjust 20 dB in 0.25 dB steps
Full Band ±0.75 dB
Per 40 MHz ±-0.25 dB
0 to +50°C (32 to
122°F) ±0.50 dB at center frequency
±1.00 dB full band
Third Order Intermodulation
Products -30 dBc Typical, -25 dBc
maximum
at 3 dB total backoff
(two tones, ∆F = 1 MHz)
AM to PM Conversion
Output 2.0 degrees typical, 3.0 max at
rated output
Group Delay (per 40 MHz)
Linear ±0.03 ns/MHz
Parabolic ±0.003 ns/MHz2
Ripple 1.0 ns Peak-to-Peak
Parameters Specifications
Front Panel
Display 20 x 2 LCD
Data Entry Cursor Control Keypad
Output Sample Type N (f), 50Ω, –40 dBc
nominal
Input Sample Type N (f), 50Ω, –20 dBc
nominal
Remote Control
COM Port EIA-232 or EIA-485
Protocol ASCII
Alarms
Summary Fault Form C
LED
Power On Green
Fault Red
Stored Fault Red
TX On Yellow
Online Yellow
Remote Yellow
Mechanical
Envelop 8.75H x 19W x 24D inches
(22.22H x 48.26W x 60.96D cm)
Weight 75 lbs (34 kg)
Environmental
Temperature
Operating
Storage
0 to 50°C (32 to 122°F)
–40 to 70°C (–40 to 158°F)
Humidity
Operating
Storage
10 to 95% Noncondensing
0 to 100% Noncondensing
Shock Normal Commercial
Shipping and Handling
Power Requirements
VAC 180 to 270 VAC, 47 to 63 Hz
1100W nominal

Rev. 0 1-6
This page is intentionally blank.

Rev. 0 2-1
2Chapter 2.
INSTALLATION
This chapter describes the instructions for unpacking and installing the KPA080-4045-I
Ku-Band Solid State High Power Amplifier
2.1 Unpacking
Perform a receiving inspection as follows:
• Inspect the shipping container for damage. The shipping container and packing
materials should be retained for possible reshipment.
• Check to determine that all parts, materials and documentation have been shipped
with the SSPA. The SSPA should be inspected for possible damage, and then tested
for proper operation.
• If the shipment exhibits any of the following, contact Comtech EFData Customer
Support:
♦ Incomplete
♦ Mechanical damage
♦ Inoperable
If there is damage to the shipping container, notify the carrier. Retain all shipping
materials for inspection by the carrier.

Installation KPA080 Ku-Band Solid-State Power Amplifier
2-2 Rev. 0
2.2 Installation
The SSPA is designed for installation to mount in a standard 19-inch (48 cm) rack
cabinet or enclosure. The SSPA chassis requires 8.75 inches (22 cm) of panel height
space.
Adequate air ventilation should be provided to the rack mounted equipment. Cool
air is taken in through the front panel and exhausted out the rear panel.
Locate the SSPA so the input and output airflow paths are not obstructed or
restricted. This will minimize the amplifier operating temperature.
• If the SSPA is to be mounted on slides, the slides must be the Comtech
EFData rack slides provided with the SSPA. Proceed as follows:
!" Mount the slides on the sides of the SSPA chassis with the provided
mounting hardware.
!" Install the slide rails on the rack cabinet enclosure.
!" Secure the SSPA to the cabinet with four screws inserted through the
SSPA front panel slotted holes.
2.2.1 Prime Power Connection
The On/Off prime power switch is located on the rear of the chassis adjacent to the prime
power input connector. The circuit breaker is rated for 30 Amps.
The detachable power cord mates with the AC Prime power receptacle on the rear of the
SSPA chassis.
A power cord for connection to 180 to 270 VAC, 47 to 63 Hz, power sources is provided
with the SSPA.

KPA080 Ku-Band Solid-State Power Amplifier Installation
Rev. 0 2-3
2.2.2 Cable Connections
The cable signal functions are shown in Table 2-1.
Table 2-1. Cable Connections
Connector Function
J1 SSPA RF Input (RF). Mating connector: Type SMA Female
J2 SSPA RF Output (RF). Mating connector: WR75G
J3 AC Prime Power (Cord provided with SSPA)
J4 Redundant Loop Interface (for use in redundant configurations)
J5 Customer Discrete Control
J6 COM 1: Serial Communications Interface, EIA-232 or EIA-485
communications links
Mating connector: Type DB9M
J7 Waveguide Switch Interface (for use in redundant configurations)
2.2.3 Optional: Redundancy Kit Installation
Comtech EFData SSPAs are easily configured for redundant systems by using one of the
optional Redundant Cable Kits. These kits include all the necessary controls, semi-rigid,
and waveguide cabling, and appropriate waveguide/coax switches and terminations.
Figure 2-1 shows the typical 1:1 installation and Table 2-2 shows the associated parts list.
The primary and backup SSPAs shall be installed next to each other in a standard 19-inch
(48 cm) equipment rack. Because of the configuration of the dual WG-Coax Switch, the
upper SSPA will always act as the backup.