
Symbol Rate Calculations
C-7
SCM4000
Technical Reference Manual
Table C-5: Bit Rate Calculation Worksheet
Standard Data
Channel Interfaces
Standard Rates
Data Channel Interface
Summary
Rates
T1/E1 1
10/100 1
T1/E1 2
10/100 2
ASI 1
DS3/E3
ASI 2
DS3/E3
ASI 3
SMPTE
RS-232/
RS-485
T1
1.544
E1
2.048
Ethernet 10/100 1-90
(12.5 Recommended)
Variable
SMPTE
19.392658
ASI (Typically <45)
Variable
DS3
44.736
E3
34.368
RS-232 (0.115 Mb/s)
RS-485 (8.0 Mb/s)
0.115 Mb/s
8.0 Mb/s
Total
___________
Symbol Rates:
Desired total bit rate (in
Mb/s) =
QPSK
16QAM
32QAM
64QAM
Symbol Rates
(from
Table C-4)
________________________
___________________
_____________________
_____________________
Symbol Rate must be
between 500 kb/s and
19.5 Mb/s
Valid / Invalid
Valid / Invalid
Valid / Invalid
Valid / Invalid
Содержание SCM4000
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