[linux-dvb] Smit CAM problems

Wolfgang Wegner wolfgang at leila.ping.de
Wed Jun 18 18:06:51 CEST 2008


Hi again,

I have to revise my claim a little bit:

I just hit a problem with a "T-Rex SuperModule" that has VS1 tied low,
thus signalling 3.3V power supply on the interface. However, this would
not only violate the DVB spec, but is also contradictory to the "PC Card 5V"
reading on the sticker...

On a first try the module seems to work with 3.3V power supply, although
I did not yet try descrambling anything with it because I do not have a
smart card that can work with it.

Regards,
Wolfgang

On Thu, Jun 12, 2008 at 08:16:59PM +0200, Wolfgang Wegner wrote:
> Hi Dan,
> 
> according to the DVB (ETSI) specification, CAMs can only have 5V operating
> voltage. I do not know if there is any CAM around that (claims to) operate
> with 3.3V, although I know there are some that better should...
> 
> Regards,
> Wolfgang
> 
> On Thu, Jun 12, 2008 at 08:53:38PM +0300, Dan Lita wrote:
> > Dear Vladimir,
> > 
> > I took a closer look on the CI-CAM adapter from Technotrend.
> > There is a 3.3V voltage regulator (LM1117 DT 3.3V)
> > 
> > Similar, on the AD-SP400 it seems to be also a 3.3V voltage regulator 
> > (marked 1084-33PE). 4046 board from Twinhan/Azurewave.
> > 
> > According to SMIT operation voltage for their modules is 4.5 to 5.5V
> > 
> > If in both cards the CAM takes power after these rectifiers 
> > you cannot have a guaranteed operation.
> > 
> > Dan 
> > 
> > Vladimir Prudnikov wrote:
> > >Do you think SMiT will be interested in hunting for bugs in linux  
> > >drivers? These modules apparently work fine with any other hardware  
> > >(I'm sure professional ones do!)
> > >
> > >Regards,
> > >Vladimir
> > >
> > >On Jun 12, 2008, at 5:26 PM, Frederic CAND wrote:
> > >
> > >  
> > >>Did you try to contact SMIT support ?
> > >>
> > >>Vladimir Prudnikov a écrit :
> > >>    
> > >>>Didn't try Aston CAMs with mpeg4. But they do up to 12 channels of   
> > >>>mpeg2 perfectly well. With no problems at all. SMiTs that are for  
> > >>>8  services can do only 3 to 4 for me.
> > >>>I think it's some kind of a driver bug because it begins working  
> > >>>after  reinitialisation. Doesn't get hot. I have tried to call  
> > >>>Aston as well  but with no success yet.
> > >>>Regards,
> > >>>Vladimir
> > >>>On Jun 12, 2008, at 2:56 PM, dan.lita at sttcr.org wrote:
> > >>>      
> > >>>>Dear Vladimir,
> > >>>>
> > >>>>I read your post on linux-dvb list. We have an Aston Viaccess   
> > >>>>Professional 2.15 CAM .
> > >>>>I read that you also use Aston CAMS.  My question is whether your   
> > >>>>Aston Viaccess cam can descramble H264  feeds or not?
> > >>>>We have tried on a PACE HDTV receiver and a Tandberg unit and it   
> > >>>>does not descramble the H264 video pid. (black screen)
> > >>>>This does not happen with Viaccess RED cam.
> > >>>>
> > >>>>On older Common interface adapters from Technotrend, the one for  
> > >>>>TT  Premium DVB-S card, there was a jumper for 3V or 5V cam  
> > >>>>operation.
> > >>>>I assume the new CI adapter does not have such jumper. If it  
> > >>>>still  exist maybe it will be a good idea to switch from one  
> > >>>>voltage to the  other.
> > >>>>Another solution is to test whether it works or not for Irdeto to   
> > >>>>use an Alphacrypt Classic CAM which, at least in theory,  
> > >>>>according  to MASCOM, supports Irdeto.
> > >>>>The third thing is to notice whether the SMIT cam gets hot in   
> > >>>>operation. If it gets too hot maybe a fan similar to the one for   
> > >>>>graphics card must be put near the Common interface adapter.
> > >>>>
> > >>>>BTW. Do you have any e-mail address from Aston? I have tried to   
> > >>>>contact  them but there is no e-mail address in their website.
> > >>>>
> > >>>>Best regards,
> > >>>>Dan Lita
> > >>>>
> > >>>>
> > >>>>Vladimir Prudnikov wrote:
> > >>>>        
> > >>>>>Hello!
> > >>>>>
> > >>>>>I'm using SMIT cams to descramble channels on TT S-1500 and TT-   
> > >>>>>S2-3200. After some time of normal operation SMIT cams drop out   
> > >>>>>and  stop decrypting the stream. It needs to be removed from the  
> > >>>>>CI  slot  and reinserted to resume normal operation. Aston CAMs  
> > >>>>>have no  such  problems, but they don't support 0x652 Irdeto.
> > >>>>>I'm streaming with vlc. Tried many SMITs (Viaccess and Irdeto).   
> > >>>>>Same  problem everywhere.
> > >>>>>
> > >>>>>Regards,
> > >>>>>Vladimir
> > >>>>>
> > >>>>>_______________________________________________
> > >>>>>linux-dvb mailing list
> > >>>>>linux-dvb at linuxtv.org
> > >>>>>http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
> > >>>>>
> > >>>>>
> > >>>>>
> > >>>>>          
> > >>>_______________________________________________
> > >>>linux-dvb mailing list
> > >>>linux-dvb at linuxtv.org
> > >>>http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
> > >>>      
> > >>-- 
> > >>CAND Frederic
> > >>Product Manager
> > >>ANEVIA
> > >>    
> > >
> > >
> > >_______________________________________________
> > >linux-dvb mailing list
> > >linux-dvb at linuxtv.org
> > >http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
> > >
> > >
> > >  
> > 
> 
> > _______________________________________________
> > linux-dvb mailing list
> > linux-dvb at linuxtv.org
> > http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
> 
> _______________________________________________
> linux-dvb mailing list
> linux-dvb at linuxtv.org
> http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb



More information about the linux-dvb mailing list