DVB-S2 Configuration and Settings
R&S
®
SMCVB-K168
13
User Manual 1179.1064.02 ─ 03
"ACM"
Variable coding and modulation. Changes of settings are executed
seamlessly at the end of a complete
"VCM"
Enables multiple input streams (MIS).
Depending on the
, you can set the input signal
parameters individually for 2
input streams. For all other input
streams, test TS packets are used. All input streams are using differ-
ent PIDs for the TS test packets.
Thus, you can perform a BER measurement on every input stream, if
the PID filter of the BER measurement is enabled. For input stream
1,
set the PID of the TS test packets, see
For all subsequent input streams, the PID is derived from its prede-
cessor by subtracting 1.
Example:
For input stream
1, set "PID > 1FFF" (0x1FFF). The PIDs of the other
input streams (IS) are as follows: IS2:
0x1FFE, IS3:
0x1FFD,
IS4:
0x1FFC, IS5:
0x1FFB, IS6:
0x1FFA, IS7:
0x1FF9, IS8:
0x1FF8.
After completing one BB frame, the next input stream is used to fill
one BB frame.
If necessary, padding is performed to complete the BB frame. A new
BB frame uses the next input stream. After the last input stream, a
new merger cycle starts, and the next BB frame uses input stream
1.
Remote command:
[:SOURce<hw>]:BB:DVBS2[:INPut]:CMMode
Annex M
Enables the annex
M features as specified in
. Depending on this setting, a
different PL header is used.
Figure 3-3: Annex M block diagram
General Settings