DVB-S2 Configuration and Settings
R&S
®
SMCVB-K168
19
User Manual 1179.1064.02 ─ 03
The displayed information depends on the coding and modulation mode:
●
"CM Mode > CCM/ACM": Single input stream information.
●
"CM Mode > VCM": Multiple input stream information displayed in the "Input
Stream <num>" table.
See
Settings:
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Input Stream <num> table
Displays individual parameters for each input stream
<num>
. The table displays infor-
mation of up to 8 input streams with
<num>
ranging from 1 to 8.
For 2
input streams, you can set and read the input signal parameters individually. For
all other input streams, the source is fixed to "Test Signal" and only displayed in the
table.
Packet Length ← Input Stream <num> table
Requires "Source > External".
Displays the packet length of the external transport stream in bytes.
If the packet length does not match the specified length, the output signal is erroneous.
"Packet Length > Invalid" is displayed.
"188"
188 byte packets specified for serial input ("Input > TS IN") and paral-
lel input ("Input > IP").
If stuffing is disabled, only this value is allowed.
"204"
204 byte packets specified for serial input and parallel input.
"Invalid"
Packet length does not match the specified length.
Remote command:
[:SOURce<hw>]:BB:DVBS2[:IS<ch>]:PACKetlength?
Max. Useful Data Rate ← Input Stream <num> table
Requires "Source > External/TS Player".
Displays the maximum data rate, that is derived from the current modulation parameter
settings.
The value is the optimal value at the TS input interface, that is necessary for the modu-
lator.
If "Stuffing > On", the value indicates the maximum useful data rate, that is allowed in
the transport stream.
If "Stuffing > Off", the value indicates the transport stream input data rate that is
required for the transport stream.
Remote command:
[:SOURce<hw>]:BB:DVBS2[:IS<ch>]:USEFul[:RATE]:MAX?
Input Signal Settings