Comtech EF Data CPA-050 User manual

Part Number MN/CPA-IN.IOM Revision 0
CPA
C-Band Solid-State Power Amplifie
r
Installation and O
p
eration Manual
Important Note: This information contained in this document supersedes the documentation for:
CPA-050, CPA-100, CPA-200, and CPA-350. Product specifications are subject to change without
prior notice.

Copyright © Comtech EF Data, 2005. All rights reserved. Printed in the USA.
Comtech EF Data, 2114 West 7th Street, Tempe, Arizona 85281 USA, 480.333.2200, FAX: [phone].
CPA
C-Band Solid-State Power Amplifier
Installation and Operation Manual
Part Number MN/CPA-IN.IOM
Revision 0
Januar
y
7, 2005

ii
Customer Support
Contact the Comtech EF Data 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 EF Data
Attention: Customer Support Department
2114 West 7th Street
Tempe, Arizona 85281 USA
480.333.2200 (Main Comtech EF Data Number)
480.333.4357 (Customer Support Desk)
480.333.2161 FAX
or, E-Mail can be sent to the Customer Support Department at:
[email protected]
Contact us via the web at www.comtechefdata.com.
1. To return a Comtech EF Data product (in-warranty and out-of-warranty) for
repair or replacement:
2. Request a Return Material Authorization (RMA) number from the Comtech EF
Data 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 EF Data. (Shipping charges should be
prepaid.)
This equipment was supplied with the latest internal operating software/firmware released for
this model at time of shipment. If this equipment will be installed into an existing system
containing older units, please contact Comtech EF Data Customer Support for additional
information.
For more information regarding the warranty policies, see Warranty Policy, p. x.

iii
Table of Contents
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
2.4 Dimensional and Outline Diagrams ...............................................................2-8

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CHAPTER 3. OPERATION ........................................................................................3-1
3.1 General .............................................................................................................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
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
5.6 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

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5.9 Command/Response Pairs .............................................................................5-9
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 ....................................................................................... 5-17
5.9.6 Error Processing ................................................................................... 5-18
5.9.7 Configuration Errors.............................................................................. 5-18
5.9.8 Time-Outs ............................................................................................. 5-18
5.10 Command Summaries................................................................................... 5-19
CHAPTER 6. MAINTENANCE AND TROUBLESHOOTING...................................... 6-1
6.1 General .............................................................................................................6-1
6.2 Maintenance Testing .......................................................................................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
APPENDIX B. SPECIFICATION DRAWINGS...........................................................B–1

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Figures
Figure 1-1. CPA350.................................................................................................................................................. 1-1
Figure 1-2. Functional Block Diagram ..................................................................................................................... 1-2
Figure 2-1. Redundancy Installation......................................................................................................................... 2-4
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
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 ................................................................................................................... 5-18
Table 5-3. Remote Control Summary..................................................................................................................... 5-19
Table 5-4. Commands Supported by Virtual Addressing Mode............................................................................. 5-20
Table 6-1. Troubleshooting ...................................................................................................................................... 6-3

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About this Manual
This manual provides installation and operation information for the Comtech EF Data
C-Band Solid-State Power Amplifier (CPA). This is a technical document intended for
earth station engineers, technicians, and operators responsible for the operation and
maintenance of the CPA. This manual supports the following models:
• CPA-050 Power Rating: 47.0dBm
• CPA-100 Power Rating: 50.0 dBm
• CPA-200 Power Rating: 53.0 dBm
• CPA-350 Power Rating: 55.0 dBm
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.
IMPORTANT
Indicates information critical for proper equipment function.

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Safety Notices
This equipment has been designed to minimize exposure of personnel to hazards. The
operators and technicians must:
• 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.
WARNING
• Disconnect the power supply cord before servicing the SSPA.
Lithium Battery Replacement
WARNING
There is a possibility that the Lithium battery on the M&C assembly will
explode if the battery is incorrectly replaced. Observe all instructions from
the battery manufacturer. 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.
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.
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.

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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 EF Data Technical
Publications Department: [email protected]
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.

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Warranty Policy
This Comtech EF Data 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
EF Data 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 EF
Data and all related custom, taxes, tariffs, insurance, etc. Comtech EF Data is responsible
for the freight charges only for return of the equipment from the factory to the customer.
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.
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 EF Data.
No other warranty is expressed or implied. Comtech EF Data 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 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.
Disclaimer
Comtech EF Data 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 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 you have any questions regarding your equipment or the information in this manual,
please contact the Comtech EF Data Customer Support Department.

1-1
Chapter 1. INTRODUCTION
1.1 Introduction
The C-Band Solid-State High Power Amplifier (Figure 1-1), herein after referred to as,
“the CPA” is designed for use in communication systems, or in satellite uplink data
systems. The CPA operates over the RF input frequency range of 5.845 to 6.425 GHz.
The CPA is designed to be hard mounted in a standard 19-inch (48 cm) rack or cabinet,
or to be rack mounted using Comtech EF Data slide mechanisms provided with the CPA
to allow it to be serviced without its removal from the rack.
CPA-050, -100, -200 Two internally mounted exhaust fans are mounted on the chassis
for cooling.
CPA-350 Four 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
mating connector is supplied with the Solid-State Power Amplifier (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 CPA. Connectors for
the external interface connections are located on the rear of the CPA chassis.
1.2 Functional Description
The CPA consists of a chassis, power supplies, fan assembly, front panel assembly,
Monitor/Control Processor (MCP) and Comtech EF Data SSPA modules. The amplifier
is designed using a Comtech EF Data low-loss combining technique and an MCP based
temperature versus gain compensation.

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Figure 1-1. CPA
CPA-350
CPA-200
CPA-100
CPA-050

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A CPA-050 functional block diagram is shown in Figure 1-2.
Figure 1-2. CPA-050 Functional Block Diagram
RF INPUT
MONITOR & CONTROL
AUX. PS
& SWITCH
CONTROL
+12V
-12V
CONTROL
& MONITOR
28Vdc PS
PS 10Vdc
-5Vdc
Interlock
FAN2
FAN1
AC
POWER
INPUT
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
10V
10V
-5Vdc
Interlock
J1
J8
J9
J6COM1
J3
REDUND.
SWITCH
CONTROL
J7
J5 DISCRETE
CONTROL
REDUND.
LOOP
J4
J2 RF
OUTPUT
(W/G)
CPA 50
BLOCK DIAGRAM

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A CPA-100 functional block diagram is shown in Figure 1-3.
Figure 1-3. CPA-100 Functional Block Diagram

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A CPA-200 functional block diagram is shown in Figure 1-4
Figure 1-4. CPA-200 Functional Block Diagram
RF INPUT
MONITOR & CONTROL
AUX. PS
& SWITCH
CONTROL
+12V
-12V
CONTROL
& MONITOR
28Vdc PS
PS #1 10Vdc
-5Vdc
Interlock
FAN2
FAN1
PRIME
POWER
INPUT
PS #2 10Vdc
INPUT
SAMPLE
OUTPUT
SAMPLE
POWER CONDITIONING & CONTROL
CUST.
GAIN
CTRL
TEMP.
COMP.
- 5V -5V10V 10V
- 5V - 12V 12V
OUTPUT
POWER
DETECTOR
REFLECTED
POWER
DETECTOR
Keypad
&
Display
10V #1
10V #2
10V #1 10V #2
- 5Vdc
Interlock
J1
J8
J9
J6COM1
J3
REDUND.
SWITCH
CONTROL
J7
J5 DISCRETE
CONTROL
REDUND.
LOOP
J4
J2 RF
OUTPUT
(W/G)
CPA200
BLOCK DIAGRAM

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A functional block diagram is shown in Figure 1-5.
Figure 1-5. Functional Block Diagram
RF INPUT
MONITOR & CONTROL
AUX. PS
& SWITCH
CONTROL
+12V
-12V
MONITOR
& CONTROL
28Vdc PSPS #1 10Vdc
-5Vdc
Interlock
FAN2FAN1
AC
POWER
INPUT
PS #2 10Vdc
INPUT
SAMPLE
OUTPUT
SAMPLE
POWER CONDITIONING
& CONTROL
CUST.
GAIN
CTRL
TEMP/
COMP
-5V 10V
-5V -12V 12V
OUTPUT
POWER
DETECTOR
REFLECTED
POWER
DETECTOR
Keypad
&
Display
10V #1
10V #1 10V #2
-5Vdc
Interlock
J1
J8
J9
J6COM1
J3
REDUND.
SWITCH
CONTROL
J7
J5 DISCRETE
CONTROL
REDUND.
LOOP
J4
J2 RF
OUTPUT
(W/G)
CPA350
BLOCK DIAGRAM
Σ
POWER CONDITIONING
& CONTROL
A
B
∆Σ
TEMP-5V 10V
Output A
Output B
Driver
10V #2
-5Vdc
Interlock
Load
Overheat
Sensor
FAN3 FAN4
RF INPUT
MONITOR & CONTROL
AUX. PS
& SWITCH
CONTROL
+12V
-12V
MONITOR
& CONTROL
28Vdc PSPS #1 10Vdc
-5Vdc
Interlock
FAN2FAN1
AC
POWER
INPUT
PS #2 10Vdc
INPUT
SAMPLE
OUTPUT
SAMPLE
POWER CONDITIONING
& CONTROL
CUST.
GAIN
CTRL
TEMP/
COMP
-5V 10V
-5V -12V 12V
OUTPUT
POWER
DETECTOR
REFLECTED
POWER
DETECTOR
Keypad
&
Display
10V #1
10V #1 10V #2
-5Vdc
Interlock
J1
J8
J9
J6COM1
J3
REDUND.
SWITCH
CONTROL
J7
J5 DISCRETE
CONTROL
REDUND.
LOOP
J4
J2 RF
OUTPUT
(W/G)
CPA350
BLOCK DIAGRAM
Σ
POWER CONDITIONING
& CONTROL
A
B
∆Σ
TEMP-5V 10V
Output A
Output B
Driver
10V #2
-5Vdc
Interlock
Load
Overheat
Sensor
FAN3 FAN4

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1.3 Front Panel
The front panel contains a User Interface Key-Pad which is used by a local operator to
input commands to the CPA. 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 1-1for 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 TX 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

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1.3.1 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 1-2for 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.
1.4 Built-in Redundancy Controller
Each CPA 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 CPA(s) for faults. A faulted online unit
may be disconnected and replaced without affecting the online power amplifier.