Comtech EF Data SDM-650B User manual

SDM-650B
Satellite Modem
Installation and Operation Manual
Part Number MN/SDM650B.IOM
Revision 5

Copyright © EFData Corporation, 1995, 1996.
All rights reserved.
Printed in the USA.
EFData Corporation, 2105 West 5th Place, Tempe, Arizona 85281 USA, [phone], FAX: [phone].
EFData Corporation is an ISO 9001 Registered Company
SDM-650B
Satellite Modem
Installation and Operation Manual
Part Number MN/SDM650B.IOM
Revision 5
May 28, 1996
Special Instructions:
This is the sixth edition of the manual.
Change bars were not utilized.
This revision supersedes part number MN/SDM650 Rev. 4 dated May 5, 1995.

Warranty Policy
This EFData Corporation product is warranted against defects in material and
workmanship for a period of one year from the date of shipment. During the warranty
period, 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 EFData and
all related custom, taxes, tariffs, insurance, etc. EFData is responsible for the freight
charges only for return of the equipment from the factory to the customer. EFData will
return the equipment by the same method (i.e., Air, Express, Surface) as the
equipment was sent to 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 EFData.
No other warranty is expressed or implied. EFData Corporation 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. EFData
Corporation shall not be liable for any direct, indirect, special, incidental, or
consequential damages, whether based on contact, tort, or any other legal theory.
Disclaimer
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, 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 EFData Customer Support Department. (For more information,
refer to the preface.)

Rev. 5 i
Preface
About this Manual
This manual provides installation and operation information for the EFData SDM-650B
satellite modem.
This is a technical document intended for earth station engineers, technicians, and
operators responsible for the operation and maintenance of the SDM-650B satellite
modem.
Organization
This manual includes the following chapters and appendixes:
•Chapter 1 — describes the unit’s purpose, function, description, options, and
system specification.
•Chapter 2 — describes the unit’s installation process, external connectors, and
system requirements.
•Chapter 3 — describes the unit’s configuration.
•Chapter 4 — provides front panel operation information.
•Chapter 5 — describes the unit’s theory of operation.
•Chapter 6 — describes the maintenance of the unit, and provides troubleshooting
assistance.
•Appendix A — provides data rate change instructions and the differences for
fixed and variable rate filters.

Preface SDM-650B Satellite Modem
ii Rev. 5
•Appendix B — describes the unit’s remote control operation protocol and
command structure.
•Appendix C — provides field compatibility specifications.
•Appendix D — provides software change instructions.
•Appendix E — describes the unit’s Automatic Gain Control (AGC) interface
option.
•Appendix F — describes the asynchronous overhead channel unit option.
•Appendix G — describes the Trojan interface option.
•Glossary.
Conventions Used in this Manual
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.

SDM-8000 Satellite Modem Preface
Rev. 5 iii
References Used in this Manual
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 following document:
•Department of Defense (DOD) MIL-STD-188-114A, “Electrical Characteristics
of Digital Interface Circuits.”
Trademarks
Product names mentioned in this manual may be trademarks or registered trademarks of
their respective companies and are hereby acknowledged.
Related Documents
The following documents are referenced in this manual:
•EFData Specification SP/1100
•CCITT Recommendation V.35
•CCITT Volume III Red Book
•INTELSAT Document 308
•INTELSAT Document 309
•Bell System Publication 62411
•AT&T Publication 62411
•EFData ASYNC Breakout Panel Installation and Operation Manual

Preface SDM-650B Satellite Modem
iv Rev. 5
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 double-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.
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 EFData Customer Support
Department according to the following information.

SDM-8000 Satellite Modem Preface
Rev. 5 v
Customer Support
Contact the EFData Customer Support Department for:
•Product support
•Information on returning a product
•Information on upgrading a product
•Product training
•Reporting comments or suggestions concerning manuals
An EFData Customer Support representative may be reached at:
EFData Corporation
Attention: Customer Support Department
2105 West 5th Place
Tempe, Arizona 85281 USA
[phone] (Main EFData Number)
[phone] (Customer Support Desk)
[phone] FAX
or, E-Mail can be sent to the Customer Support Department at:
[email protected]
To return an EFData product (in-warranty and out-of-warranty) for repair or replacement:
1. Request a Return Material Authorization (RMA) number from the EFData
Customer Support Department.
Be prepared to supply the Customer Support representative with the model
number, serial number, and a description of the problem.
2. To ensure that the product is not damaged during shipping, pack the product in
its original shipping carton/packaging.
3. Ship the product back to EFData. (Shipping charges should be prepaid.)
For more information regarding the warranty policies, refer to the disclaimer page
located behind the title page.

Preface SDM-650B Satellite Modem
vi Rev. 5
This page is intentionally left blank.