DVB-S2 Configuration and Settings
R&S
®
SMCVB-K168
31
User Manual 1179.1064.02 ─ 03
Remote command:
[:SOURce<hw>]:BB:DVBS2:TSL<st>:IS<ch>:MODCod
Modulation coding values ← Mod. Cod.
Modulation and coding values depend on the "S2-X" state:
●
"S2-X > Off": Classical modulation values only
●
"S2-X > On". Classical and S2-X specific coding values
.
Classical modulation coding: If "FEC Frame > Short", not all modulation coding values
are available. If the FEC frame is changed to "Short" and the set modulation coding
value is not available for this FEC frame value, the modulation coding is automatically
changed to the combination with the next lower code rate.
The name of the modulation coding values accords with the canonical name used in
the DVB-S2 specifications. It starts with the numeric value that is used as remote com-
mand parameter. In the information area, an abbreviation of this name is displayed.
For detailed information about constellation, code rate, bit interleaver pattern and FEC
frame type, see the following tables.
Table 3-2: Classical family
Modulation coding value
Bit interleaver pattern
Required FEC frame
1: QPSK 1/4 classical
-
-
2: QPSK 1/3 classical
-
-
3: QPSK 2/5 classical
-
-
4: QPSK 1/2 classical
-
-
5: QPSK 3/5 classical
-
-
6: QPSK 2/3 classical
-
-
7: QPSK 3/4 classical
-
-
8: QPSK 4/5 classical
-
-
9: QPSK 5/6 classical
-
-
10: QPSK 8/9 classical
-
-
11: QPSK 9/10 classical
-
Normal
12: 8PSK 3/5 classical
210
-
13: 8PSK 2/3 classical
012
-
14: 8PSK 3/4 classical
012
-
15: 8PSK 5/6 classical
012
-
16: 8PSK 8/9 classical
012
-
17: 8PSK 9/10 classical
012
Normal
18: 16APSK 2/3 classical
0123
-
19: 16APSK 3/4 classical
0123
-
20: 16APSK 4/5 classical
0123
-
Coding Settings