Comtech EF Data SMS-458B - Manual (Page 11)

SMS-458B Modem Protection Switch Revision 2
Preface MN/SMS458B.IOM
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About this Manual
This manual provides installation and operation information for the Comtech EF Data
SMS-458B Modem Protection Switch. This a technical document intended for earth
station engineers, technicians, and operators responsible for the operation and
maintenance of the SMS-458B..
Related Documents
The following documents are referenced in this manual:
• Department of Defense (DOD) MIL-188-114A, “Electrical Characteristics of
Digital Interface Circuits”
• Comtech EF Data, SDM2020 Modulator, Rev. 4 dated, September 15, 1999
Installation and Operation Manual
• Comtech EF Data, SDM-9000, Rev. 4, dated, May 5, 1997 Installation and
Operation Manual
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
IMPORTANT indicates a statement that is associated with the task
being performed.