When one set of tuning parameters has been defined it is possible to click the button
Import from NIT
in
order to have the other frequencies automatically added to the list, as defined in the Network Information
Table analyzed by the probe. Default values will be assigned to parameters that are not a part of the NIT.
Clicking the Import from NIT button will open the NIT Import pop-up view.
NIT Import
Select NIT:
The ‘Select NIT’ drop-down menu shows NIT tables available in the transport
stream currently being analyzed. Information in the selected NIT will be used to
generate a tuning list when the Import tunings button is clicked.
Naming policy:
The probe will automatically name tunings according to the naming policy se-
lected by the user: ‘Frequency’, ‘TS ID’ or ‘TS ID and frequency’.
Rename existing:
If the ‘Rename existing’ checkbox is marked, imported tunings that are already
present in the tuning list will be renamed in accordance with the naming policy
selected by the user.
The following parameters are defined for each SAT frequency:
SAT - Tuning setup:
Name: A name should be assigned to each frequency channel
Transponder frequency: The transponder frequency in GHz
LNB Local osc.: The LNB local oscillator frequency in GHz
LNB voltage: The LNB voltage - may be 0V, 13V or 18V
22kHz tone: Enable or disable 22kHz tone
DiSEqC:
The satellite front-end module supports DiSEqC 1.2 signaling. The oper-
ator can enable a particular DiSEqC message to be transmitted towards
the antenna for each frequency defined in the tuning setup typically used
to control L-band switches. Specifically, the message sent has the format
( 0xE0 0x10 0x38 N ), where N is a byte configurable by the user to be
between 0x00 and 0x0f. This is the command 0x38 “Write to Port group
1 (Committed switches)”.
Symbol rate: The SAT symbol rate in Msym/s
Input stream selection:
Chooses the input stream identifier (ISI) for Multi input stream (MIS),
AUTO should be selected for Single input stream (SIS) – applies only to
DVB-S2
PL scrambling mode:
The PL scrambling mode selected: None, Gold, Root – applies only to
DVB-S2
VB2xx GigE User’s Manual version 5.4 211
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