Acm/vcm/pls !

[sjamesamuel]

I found this tp data on flysat:

Hotbird:

12539 H
DVB-S2/8PSK
ACM/VCM/PLS

What does it mean and how can it be received?

[foxy6800]

Re: Acm/vcm/pls !

if you are doing a manual search, you have to set your frequency to 12539, horizontal ,2/3 , 27500.

depending on your unit, some of these setting should already be set.
If you tell us what receiver you have we can help you better

[digicon]

Re: Acm/vcm/pls !

ACM and VCM streams generally can only be opened by a very few of the current TV PC satellite cards as far as i am aware there is no receiver currently available that will decode these streams.

I have a TBS6925 satellite PC card which will decode ACM and VCM steams

[kalpikos]

Re: Acm/vcm/pls !

Hello

ACM/VCM/PLS can only be received by some DVB-S2 cards as tbs.

PLS
Physical Layer Scrambling or PLS is used in DVB-S2 as a way to improve
data integrity. A number called the "scrambling sequence index" is
used by the modulator as a master key to generate the uplink signal.
This same number must be known by the receiver so that demodulation is
possible.

ACM/VCM
Variable Coding and Modulation (VCM) and Adaptive Coding and
Modulation (ACM) are techniques that are strongly associated with the
DVB-S2 standard. VCM can be used to provide different levels of error
protection to different components within the service. It does this by
allowing different combinations of modulation and FEC rate to be
applied to different parts of the data stream. ACM extends VCM by
providing a feedback path from the receiver to the transmitter to
allow the level of error protection to be varied dynamically in
accordance with varying propagation conditions. Claims of performance
improvements exceeding 100% have been made for ACM in terms of
satellite capacity gain.

[rizwan]

Re: Acm/vcm/pls !

On normal DVB-S2 STB, you can't scan these type of TP

[Mobley3]

Re: Acm/vcm/pls !

You might like to check out ... Ayecka.com to have a read on the
SRI Advanced DVB-S2 receiver. you should note that this is all Professional
equipment so you might need a Bankloan.

Regards Mobley3

[rizwan]

Re: Acm/vcm/pls !

These Products not for Home users