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4-44 SBD75e Series Demodulator Installation and Operation Manual

Selecting this mode overrides the ISI received in the base-band header, and all 16APSK rate 2/3

frames will be treated as though ISI is set to 1. In this example, the user must ensure that only one

stream (ISI 1) is transmitted using 16APSK rate 2/3. Failure to do this will result in output interface

malfunction, as two or more streams become incorrectly aggregated. In this case a warning

message at the bottom of the window (as shown in Figure 4.42) is displayed.

Note

ALL output stages must be programmed to a specific ‘Modulation and Coding’ value in order for

stream isolation to be effective.

4.9.5.6 DVB-S De-concentration

In DVB-S there is a method of de-concentrating multiple transport streams. In total two individual

transport streams can de-multiplexed from a bundle of 31. To enable this mode select

Deconcentrate.

Figure 4. 43 De-Concentration control

For each output (0, 1, 2), A valid Stream ID between 1 and 31 is entered. This stream is then

output on that port. There can be two unique outputs and the other is a copy of one of the other

two. Output 3 is always a copy of output 0. If all 3 outputs are unique then configuration will fail

and this will clearly be stated.

This mode is only valid in DVB-S and DVB-DSNG and not in DVB-S2 as it is now part of the

standard.

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Advantech SBD75e Series Especificaciones Pagina 80