Comtech EF Data XPA-200 User 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.
XPA-200
Solid-State High Power Amplifier
Installation and Operation Manual
Part Number MN/XPA200IN.IOM Revision 2

Copyright ©2013Comtech EF Data. All rightsreserved. Printed in the USA. ComtechEFData,2114West
7thStreet, Tempe, Arizona 85281 USA, 480.333.2200, FAX: [phone]

Filename: XPA200-7984-I-OPT1_Errata_a.doc 1
Errata A
Comtech EFData Documentation Update
Subject: Various Changes
Date: February 28, 2003
Document: XPA200-7984-I-OPT1, X-Band SSPA Installation and
Operation Manual, Rev. 2
Part Number:
Collating
Instructions:
Attach these pages at the beginning of the
manual.
Comments:
The following changes provide updated information. This information
will be incorporated into the next revision.
Change Specifics:
1. Section 3.3.2.1 should be amended to include (amendments or
changes in bold):
. . .
EXT mute on from external J4 control (see section 1)
ON muted by M&C control or via remote control
2. Section 5.8.2.2 should be amended to include (amendments or
changes in bold):
. . .
Confirmation: >DEV/MUT_xxx’cr’lf’]
Note: On Status queries, the ‘MUT’ command may also return EXT
(mute on from external J4 control) or INH (mute on or inhibited by
Mitec 2723B via J5).
3. Section 5.8.3.1 should be amended to include (amendments or
changes in bold):
. . .
TX_nnn’cr’ Transmit – ON/OFF/EXT/INH
. . .

Filename: XPA200-7984-I-OPT1_Errata_a.doc 2
4. Section 5.8.3.5 should be amended to include (amendments or
changes in bold):
. . .
+10_2_xx’cr’ +10 PS#2 Fault
SHTD_xx’cr’ Thermal Shutdown
. . .
Note: A temperature fault is indicated if the unit is less than -
20C or more than 85 degrees C. This creates a summary fault and
will cause the unit to mute itself and switchover to the back-up
unit. However, the 10V supply to the FET transistors will remain
on until the unit reaches the thermal shutdown temperature of 90
degrees C or above. For protection reasons, the unit will
shutdown the 10V supply to the power transistors at temperatures
at or above 90 degrees C.
5. Section 5.8.3.8 should be amended to include (amendments or
changes in bold):
. . .
Confirmation: >DEV/PACRCS_aabcde'cr''lf']
where: aa = # of 0.25 dB steps in HEX above 0dB (0to120)
b = 1 if Amplifier ON, 0 if OFF
c = 1 if Tx ON, 0 if OFF, 2 if external mute
command, 3 if external inhibit command
d = 1 if unit ONLINE, 0 if OFFLINE
e= 1 if Auto Recovery enabled, else 0
6. Section 5.8.3.9 should be amended to include (amendments or
changes in bold):
. . .
iii = RF forward pwr, .1 dBm steps above 26.0 dBm in Hex
jjj = RF reverse pwr, .1 dBm steps above 19.0 dBm in Hex
7. Section 5.8.3.12 should be amended to include (amendments or
changes in bold):
. . .
Confirmation: >DEV/PACRAS_abcdefghijkl'cr''lf']
. . .
. . .
g = 1 if +10 PS#2 Fault, else 0
h = 1 if TEMP Fault, else 0
i = 1 if Thermal Shutdown, else 0
j= 1 if FAN 1 Fault, else 0
k= 1 if FAN 2 Fault, else 0
l= 1 if PROC Fault, else 0

Filename: XPA200-7984-I-OPT1_Errata_a.doc 3
Note: A temperature fault is indicated if the unit is less than -
20C or more than 85 degrees C. This creates a summary fault and
will cause the unit to mute itself and switchover to the back-up
unit. However, the 10V supply to the FET transistors will remain
on until the unit reaches the thermal shutdown temperature of 90
degrees C or above. For protection reasons, the unit will
shutdown the 10V supply to the power transistors at temperatures
at or above 90 degrees C.

XPA200-7984-I-OPT1, X-Band SSPA Policy
XPA200-7984-I-OPT1, Rev.2
POLICY
WARRANTY
This COMTECH Product is warranted against defects in material and
workmanship for a period of one year from the date of shipment.
During the warranty period, COMTECH will, at it's option, repair
or replace products which prove to be defective. For warranty
service, the product must be returned to COMTECH, all shipping
charges prepaid by the buyer. COMTECH will pay shipping charges
to return repaired, or replaced, products shipped by normal
surface delivery within the continental U.S..
The information within this document is subject to change without
notice. Contact the COMTECH Customer Service Representative,
1-[phone], for information updates that apply to this
product.
LIMITATIONS of WARRANTY
The foregoing warranty shall not apply to defects resulting from
improper installation or maintenance, abuse, unauthorized
modification, or operation outside of the environmental
specifications for this product, or, for damages that occur as a
result of improper repackaging of equipment for return to
COMTECH.
No other warranty is expressed or implied. COMTECH 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 shall not be liable for any direct, indirect,
special incidental, or consequential damages, whether based on
contract, tort, or any other legal theory.

XPA200-7984-I-OPT1, X-Band SSPA Preface
XPA200-7984-I-OPT1, Rev.2 i
Preface
Manual
This manual describes the installation, operation and
maintenance for the XPA200-7984-I 200 watt X-Band Solid State
High Power Amplifier (SSPA).
Intended Users
This is a technical document intended for satellite earth
station engineers, technicians and operators responsible for the
installation, operation and maintenance of the XPA200-7984-I X-
Band SSPA.
Organization of Manual
This manual includes the following chapters:
!Section 1 - describes the purpose, function,
description, options and systems specifications of this
product.
!Section 2 - describes the unpacking, installation and
and brief operating instructions for use with the Mitec
2723B Variable Phase Combiner and Redundancy Switching
System.
!Section 3 - describes the system operation.
!Section 4 - describes the redundant system operation.
!Section 5 - describes the remote control operation.
!Section 6 - describes the maintenance and
troubleshooting procedures.

XPA200-7984-I-OPT1, X-Band SSPA Preface
XPA200-7984-I-OPT1, Rev.2 ii
Manual Revision Numbering Scheme
The following table identifies the revision numbering
scheme utilized for the COMTECH Operation and Maintenance
Manuals, Addenda and Supplements:
Part Number Description
XPA200-7984-I-
OPT1, REV.2
2nd edition of the Manual.
Reporting Comments or Suggestions Concerning This Manual
Comments and suggestions regarding the contents and
design of this manual will be appreciated. To submit your
Comments, please contact the COMTECH Customer Service
Representative, 1-[phone].
Safety Notice
This equipment has been designed to minimize exposure of
personnel to hazards. The operators and technicians must:
!NEVER TURN ON THE UNIT WITHOUT PROPER RF TERMINATIONS.
!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.
!CAUTION - Disconnect the power supply cord before
servicing the SSPA.
!Lithium Battery Replacement - CAUTION: There is a
danger that the Lithium battery on the M&C assembly

XPA200-7984-I-OPT1, X-Band SSPA Preface
XPA200-7984-I-OPT1, Rev.2 iii
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.
Returning a Product
The following information applies to a COMTECH equipment
product being returned for repair or replacement service:
NOTE: An item is considered “out-of-Warranty” if the warranty
period (as determined by the original purchase) has
expired; or the equipment has been damaged or otherwise
made unusable as a result of an accident or
unreasonable use, neglect, improper or unauthorized
service, repairs or modifications, or other causes not
arising out of defects in design, material, or
workmanship.
To return a COMTECH product for repair or replacement:
1. Request a Return Material Authorization (RMA)number
from the COMTECH Customer Service Representative, 1-(480)
333-4357, FAX [phone].
2. Provide the Customer Service Representative with the
following information:
a. Model number.
b. Serial number.
c. Description of the problem.
d. Description of action taken to identify the
problem.
e. Name and telephone number of the company
contact.
3. The product being shipped should be packed in it's
original shipping container with proper packing material to
prevent possible shipping damage.

XPA200-7984-I-OPT1, X-Band SSPA Preface
XPA200-7984-I-OPT1, Rev.2 iv
4. Ship the product, prepaid, to COMTECH. Provide the
following address on the shipping label, with the RMA number
clearly marked on the label and the shipping container:
COMTECH EF Data Corp.
2114 W. 7th Street
Tempe, Arizona 85281 U.S.A.
Attention: Customer Service Department, RMA Number:
For more information regarding the COMTECH warranty policy,
please refer to the policy page located on the back of the title
page.
Product Application, Upgrading or Training Information
To obtain product application, upgrade or training
information, Please contact theCustomer Service Representative at
the numbers above.

XPA200-7984-I-OPT1, X-Band SSPA Table of Contents
XPA200-7984-I, Rev.1 i
Table of Contents
Section Description Page No.
1 Introduction 1-1
1.1 Scope 1-1
1.2 Functional Description 1-1
1.3 Specifications 1-3
1.4 Prime Power Input 1-4
1.5 Physical Dimensions 1-4
1.6 Environmental specifications 1-4
1.7 Front Panel Controls 1-4
1.8 Front Panel Indicators 1-5
1.9 Front Panel Display 1-7
1.10 Front Panel Test Point Samples 1-7
1.11 Rear Panel Connections 1-7
1.12 Prime Power Switch 1-11
2 Installation/Operation with Mitec 2723B
2.1 Unpacking and Inspection 2-1
2.2 Rack Mount Installation 2-1
2.3 Combined/Redundant System Operation 2-4
and Setup
3 System Operation 3-1
3.1 General 3-1
3.2 Switching Power On 3-1
3.3 Operation 3-3
3.3.1 SSPA Commands 3-9
3.3.2 Configuration Menu 3-10
3.3.3 Monitor Status Menu 3-11
3.3.4 Current Faults Menu 3-11
3.3.5 Stored Faults Menu 3-12
3.3.6 Utility Menu 3-13

XPA200-7984-I-OPT1, X-Band SSPA Table of Contents
XPA200-7984-I, Rev.1 ii
Section Description Page No.
4 Redundant System Operation
4.1 General 4-1
5 Remote Control 5-1
5.1 General 5-1
5.2 Electrical Interface 5-1
5.2.1 RS-232C 5-1
5.2.2 RS-485 5-1
5.3 Physical Interface 5-1
5.3.1 Connector 5-2
5.3.2 Pin-Out 5-2
5.3.3 Cables 5-3
5.4 Protocol 5-4
5.4.1 Transmission Mode 5-4
5.4.2 Baud Rate 5-4
5.4.3 Format 5-4
5.4.4 Character Set 5-4
5.4.5 Response Timeout 5-5
5.4.6 Bus Inactivity Requirement 5-5
5.5 Access Methods 5-5
5.6 Addresses 5-5
5.6.1 Physical Address 5-5
5.7 Message Structure 5-6
5.7.1 Start Character 5-6
5.7.2 Device Address 5-6
5.7.3 Command 5-6
5.7.4 Confirmation Response 5-7
5.7.5 Error Response 5-7
5.7.6 End of Message 5-7
5.8 Command/Response Pairs 5-8
5.8.1 Utility Commands 5-8
5.8.2 Configuration Commands 5-11
5.8.4 Status Commands 5-12
5.8.5 Stored Alarm 5-17

XPA200-7984-I-OPT1, X-Band SSPA Table of Contents
XPA200-7984-I, Rev.1 iii
Section Description Page No.
5.9 Error Processing 5-18
5.9.1 General Errors 5-18
5.9.2 Configuration Errors 5-18
5.9.3 Time Outs 5-18
Remote Command Summary Sheet 5-19
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
6.3.1 SSPA Faults 6-2
6.3.1.2 DC Power Supply Module 6-3
6.3.1.3 Temperature Fault 6-4
6.3.1.4 Monitor & Control Board 6-4
6.4 Returning the SSPA to COMTECH 6-5
6.4.1 Return Material Authorization (RMA) 6-5
6.4.2 Shipment to COMTECH 6-5
6.5 Product Application, Upgrading or Training
Information 6-6
7 Addendum 7-1
7.1 General 7-1
7.2 Additional Troubleshooting Helps 7-1
7.3 Wiring Diagram 7-5
7.4 Parts List 7-6

XPA200-7984-I-OPT1, X-Band SSPA Introduction
XPA200-7984-I-OPT1, REV.3 1-1
Section 1
Introduction
1.1 Scope
This manual provides instructions on the installation,
operation and maintenance of the XPA200-7984-I X-Band Solid State
High Power Amplifier manufactured by COMTECH COMMUNICATIONS Corp.
1.2 Functional Description
The XPA200-7984-I X-Band High Power Amplifier (SSPA) is
designed for use in communication systems, or in satellite up-
link data systems. The SSPA operates over the RF input frequency
range of 7900 to 8400 MHZ. The RF power output is 53.0 dBm
minimum at 1 dB compression. A functional block diagram is shown
in Figure 1-1.
The SSPA is designed to be hard mounted in a standard 19-
inch rack or cabinet, or to be rack mounted using COMTECH 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.
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.

XPA200-7984-I-OPT1, X-Band SSPA Introduction
XPA200-7984-I-OPT1, REV.3 1-2
POWER
AMPLIFIER
AS/0558
RF INPUT RF OUTPUT
MONITOR & CONTROL
AS/0200 +5V
-5V
AUX. PS & SWITCH
CONTROL
AS/0206
+12V -12V CONTROL
& MONITOR
PS # 2 28Vdc
PS #1 10Vdc
+10Vdc
-5Vdc Interlock
FAN2
FAN1
Prime
Power
Input
PS #2 10Vdc
Figure 1.1 FUNCTIONAL BLOCK DIAGRAM

XPA200-7984-I-OPT1, X-Band SSPA Introduction
XPA200-7984-I-OPT1, REV.3 1-3
1.3 Specifications
The following are the design, operating and environmental specifications
for the XPA200-7984-I X-Band Solid State High Power Amplifier (SSPA).
Output Front Panel
Frequency 7.900-8.400 GHz Display 24 x 2 LCD
Power 53.0dBm min. @ 1dB Comp. Data Entry Cursor Control Keypad
(see Note 1) Output Sample Type N,50 Ohms,-40dBc
Mute -80dB Input Sample Type N,50 Ohms,-20dBc
VSWR 1.25:1 Max.
Connector CPR-112G Waveguide Flange
Gain Remote Control
Linear 62dB min, 67dB typ. Comm Port RS-485 or RS-232C
Adjust 20dB in 0.25dB Steps Protocol Comtech ASCII or Emul.
Per 500MHz +.75dB
Per 40 MHz +.25dB Alarms
+0 - +50C +0.50dB @ center Freq. Summary Fault Form C
±1.00dB @ full band
LED
Power Green
Fault Red
Stored Fault Red
Third Order Intermod. Tx ON Yellow
Intercept +60.5dBm Min.,+62.0dBm Typ. Online Yellow
Products -30dBc typ., -25dBc max @ Remote Yellow
3 dB total back off
(two tones, ªf= 1MHz)
Mechanical
AM to PM Conversion Height 12.25 inches
2.0 degrees typ., 3.0 max @ rated output Width 19 inches
Depth 24 inches
Weight 100 lbs.
Group Delay
Linear +0.03ns/MHZ Environmental
Parabolic +0.003ns/MHz2Temperature 0 to +50C Operation
Ripple 1.0ns Peak-to-Peak (See Note 1)
-40 to +70C Storage
Humidity 10-95% Noncond. Oper.
Spurious 0-100% Noncond. Stor.
Carrier Related -65dBc Shock Normal Commercial
Line Related -50dBc Shipping & Handling
Input
Impedance 50 Ohms Power Requirements
Noise Figure 10dB Typ.,15dB Max. 115 VAC, 47-63 Hz, 2600 VA
VSWR 1.25:1 Max.
Connector Type N
Note 1: P1dB only guaranteed 0 to 40C. Operation above 40C not recommended.

XPA200-7984-I-OPT1, X-Band SSPA Introduction
XPA200-7984-I-OPT1, REV.3 1-4
1.4 Prime Power Input
The power input requirements for the XPA200-7984-I X-Band SSPA
are as follows:
!115 volts AC.
!47 to 63 Hz.
!2600 VA (approx. 1800W) nominal
1.5 Physical Dimensions
!Width: 19 inches.
!Height: 12.25 inches.
!Depth: 24 inches.
!Weight: 100 lbs.
1.6 Environmental Specifications
!Temperature: 0 to +50 degrees C operating.
(Note: P1dB guaranteed only 0 to 40C.
Operation above 40C not recommended).
!Humidity: 10 to 95% noncondensing operation.
1.7 Front Panel Controls
The front panel contains a User Interface Key-Pad which is used
by a local operator to input commands to the SSPA. The key-pad
is used to select the configuration for operating and monitoring
the status of the SSPA. In conjunction with the front panel two
line, twenty four character, LCD display, the key-pad allows the
operator to select one of five configurations. The configuration
functions are "Configuration Menu", "Monitor Status Menu",
"Currents Faults Menu", "Stored Faults Menu" and "Utility
Functions Menu".