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OM20 Universal Outdoor Modem
OM20 Theory of Operation
MN-OM20– Revision 5
4–4
4.2
OM20 Functional Block Diagram
Figure 4-3 represents the OM20 Functional Blocks. The modem is shown in a typical application
with customer data, TX/RX RF equipment, and antenna I/O.
Figure 4-3. OM20 Outdoor Modem Functional Block Diagram
4.2.1
Baseband Processing
The Baseband Processor performs all of the functions required for an IBS/IDR Framing Unit, a
Reed-Solomon Codec, and an E1/T1 Drop and Insert System. In addition, the Baseband
Processing Section provides for transmit clock selection and rate adaptation as well as a rate
adapter and Plesiochronous/Doppler (PD) Buffer in the receive direction. A multiplexer is also
provided for the SCT Clock Source for Loop Timing Applications. The transmit and receive
paths may be configured independently under processor control.
Summary of Contents for OM20
Page 2: ......
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Page 20: ...OM20 Universal Outdoor Modem Introduction MN OM20 Revision 5 1 4 Notes ...
Page 32: ...OM20 Universal Outdoor Modem Installation MN OM20 Revision 5 2 12 Notes ...
Page 38: ...OM20 Universal Outdoor Modem OM20 Initial Configuration MN OM20 Revision 5 3 6 Notes ...
Page 66: ...OM20 Universal Outdoor Modem OM20 Theory of Operation MN OM20 Revision 5 4 28 Notes ...
Page 138: ...OM20 Universal Outdoor Modem Web Browser Remote Protocol MN OM20 Revision 5 6 64 ...
Page 164: ...OM20 Universal Outdoor Modem Technical Specifications MN OM20 Revision 5 8 20 Notes ...
Page 198: ...OM20 Universal Outdoor Modem Appendix E MN OM20 Revision 5 E 16 Notes ...
Page 204: ...OM20 Universal Outdoor Modem Appendix F MN OM20 Revision 5 F 6 Notes ...
Page 214: ...OM20 Universal Outdoor Modem Appendix G MN OM20 Revision 5 G 10 Notes ...
Page 218: ...OM20 Universal Outdoor Modem Appendix G MN OM20 Revision 5 H 4 Notes ...
Page 220: ...2114 WEST 7TH STREET TEMPE ARIZONA 85281 USA 480 333 2200 PHONE 480 333 2161 FAX ...