Service manual

Setting up the ASI transport stream input
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Setting up the ASI transport stream input
To set up the ASI input The S
TELLAR
has 2 transport stream inputs.
Do as follows to set up the ASI transport stream input:
1. From the Codec Explorer right-click on the icon representing the transport
stream and select Properties.
2. Click Line Input to be Automatic unless you always want the line input from
a specific line.
The S
TELLAR
automatically selects the active line input signal. The auto-switch-
ing criteria for the line are input loss and transport stream loss. If an autoswitch-
ing has occurred the S
TELLAR
will keep the new line input as long as there is a
valid signal.
ROSA automatically displays:
• the input selected by the S
TELLAR
in the Line input field,
• whether or not the input is 188 or 204 byte packets in the Format field.
“188RSOFF” means that the Reed Solomon algorithm is not applied.
“204RSON” means that the Reed Solomon algorithm is applied.
“204RSOFF” means that the Reed Solomon algorithm is not applied but there
is RS overhead.
Note! The the status of the Reed Solomon error correction displayed in the
Format field is not measured by the S
TELLAR
.Itmustbesetinthe
next step.
3. If required, enable the 204 Reed Solomon Error correction
This setting must be the same in the encoder and the decoder. It only takes effect
if the input signal contains 204 bytes packets.
Note! If you are not sure whether Reed Solomon error correction is
enabled in the encoder or not then always disable error correction in
the S
TELLAR
4. Click Apply.