[linux-dvb] Smit CAM problems

Wolfgang Wegner wolfgang at leila.ping.de
Thu Jun 12 20:16:59 CEST 2008


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
> >
> >
> >  
> 

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