Comtech EF Data DD2401 - Manual (Page 23)

DD2401 Satellite Demodulator Installation
MN-DD2401 - Rev. G 3- 5
Table 3-1. Reed-Solomon Codes for IDR
Type of Service Data
Rate
(Kbps)
R-S Code
(n, k, t)
1
Bandwidth
Expansion
[ (n/k) -1 ]
Interleaving
Depth
Maximum
2
R-S Codec
Delay (ms)
Small IDR
(with 16/15 O/H)
64
128
256
384
512
768
1024
1536
(126, 112, 7)
(126, 112, 7)
(126, 112, 7)
(126, 112, 7)
(126, 112, 7)
(126, 112, 7)
(126, 112, 7)
(126, 112, 7)
0.125
0.125
0.125
0.125
0.125
0.125
0.125
0.125
4
4
4
4
4
4
4
4
115
58
29
19
15
10
8
5
IDR
(with 96 Kbps O/H)
1544
2048
(225, 205,10)
(219, 201, 9)
0.0976
0.0896
4
4
9
7
Notes:
1.
n = code length, k = information symbols and t = symbol error correcting
capability.
2. Design objective.
3. For the DD2401 Demodulator, the IDR Deframing must be supplied externally.