Theory of Operation
SDM-9000 Satellite Modem
5–18
Rev. 4
5.5 Interface
5.5.1 Description
The interface PCB fits in the middle slot of the modem chassis. The interface PCB
provides synchronous data interfacing for terrestrial data and overhead signals and a
means for modem fault reporting. The terrestrial interface functions include:
•
MUX ESC overhead into the data
•
DEMUX the received data
•
Buffering the received data
•
Monitoring and displaying the interface status without interruption of service
The following types of interfaces with options are available:
Options
Interface Type
Interface P/N
Base
Buffer
ESC
RS
G.703
3971-1
X
G.703
3971-2
X
X
G.703 (IDR)
3971-3
X
X
X
G.703 (8.448)
3971-4
X
G.703 (8.448)
3971-5
X
G.703 (8.448)
3971-6
X
G.703
5618-1
X
G.703
5618-2
X
G.703 (64K)
5618-3
X
X
ECL
4477-11
X
ECL
4477-21
X
X
ECL
4477-31
X
X
X
PECL
4477-12
X
PECL
4477-22
X
PECL
4477-32
X
X
MIL-STD-188
4477-13
X
MIL-STD-188
4477-23
X
X
MIL-STD-188
4477-33
X
X
X
Note:
In addition, an optional plug-on module supports Reed-Solomon (RS) coding and
decoding. The Reed-Solomon Codec works in conjunction with the convolutional coding
and Viterbi decoding. This includes additional framing, interleaving, and processing to
provide concatenated FEC. This option can only be installed on interfaces with a buffer.
Refer to Appendix A for further Reed-Solomon information.
Figures 3-4, 3-5, and 3-6 show the interface PCBs. A block diagram of the interface PCB
is shown in Figure 5-6.
Summary of Contents for SDM-9000
Page 2: ......
Page 5: ...8 Mbit s w IDR Figure 1 7 16QAM BER Performance Curves with Reed Solomon Filename T_ERRATA 3...
Page 8: ......
Page 27: ...SDM 9000 Satellite Modem Introduction Rev 4 1 5 Figure 1 3 SDM 9000 Block Diagram...
Page 42: ...Introduction SDM 9000 Satellite Modem 1 20 Rev 4 This page is intentionally left blank...
Page 64: ...Configuration SDM 9000 Satellite Modem 3 6 Rev 4 JP1 Figure 3 4 Interface PCB AS 3971...
Page 65: ...SDM 9000 Satellite Modem Configuration Rev 4 3 7 Figure 3 5 Interface PCB AS 4477...
Page 66: ...Configuration SDM 9000 Satellite Modem 3 8 Rev 4 JP1 JP6 JP7 Figure 3 6 Interface PCB AS 5618...
Page 70: ...Configuration SDM 9000 Satellite Modem 3 12 Rev 4 Figure 3 7 Nyquist Filter Installation...
Page 83: ...SDM 9000 Satellite Modem Operation Rev 4 4 9 This page is intentionally left blank...
Page 87: ...SDM 9000 Satellite Modem Operation Rev 4 4 13 This page is intentionally left blank...
Page 104: ...SDM 9000 Satellite Modem Operation Rev 4 4 31 This page is intentionally left blank...
Page 107: ...Operation SDM 9000 Satellite Modem 4 34 Rev 4 This page is intentionally left blank...
Page 124: ...SDM 9000 Satellite Modem Operation Rev 4 4 51 Figure 4 17 RF Loopback Figure 4 18 IF Loopback...
Page 150: ...Theory of Operation SDM 9000 Satellite Modem 5 22 Rev 4 Figure 5 6 Interface Block Diagram...
Page 158: ...Theory of Operation SDM 9000 Satellite Modem 5 30 Rev 4 This page is intentionally left blank...
Page 186: ...Maintenance SDM 9000 Satellite Modem 6 28 Rev 4 This page is intentionally left blank...
Page 218: ...Options SDM 9000 Satellite Modem A 32 Rev 4 This page is intentionally left blank...
Page 242: ...Remote Control Operation SDM 9000 Satellite Modem B 24 Rev 4 ref SE_ command...
Page 254: ...Glossary SDM 9000 Satellite Modem g 6 Rev 4 This page is intentionally left blank...
Page 256: ...2114 WEST 7TH STREET TEMPE ARIZONA 85281 USA 480 333 2200 PHONE 480 333 2161 FAX...