[vdr] Re: Hauppauge DVB-S rev1.3 : temperature info? - flex PCIriser

[Lars Bläser <lars.blaeser@epost.de>]

Stefaan Coddé wrote:
> Guido Fiala wrote:
> 
> 
> 
>>>On Saturday, 12. July 2003 16:54, Stefaan Coddé wrote:
>>>I still have to wait 5 weeks before I can continue to built up my 
>>>system (heat pipes) so therefor this..rather odd question.
>>>
>>>I know that the tuner of Rev1.3 get's hot and that there is something
> 
> 
>>>like ARM crashing.
>>>
>>>Now: What part get's really hot..meaning, which ones heat up the 
>>>system temperature too much ?
>>>
>>>The Philips vista VES1893A single chip DVB-S receiver which makes
> 
> part 
> 
>>>of the tuner? The Texis instruments DSP?
>>>The philips SAA 7146A bridge?
>>>
> 
> 
>>Just a hint for you - maybe the card does'nt become as hot if it
> 
> does'nt need 
> 
>>to feed the LNB itself but just control an external switch???
>>
>>like to build a similar system myself too...
> 
> 
> 
> Perhaps a nice idea but then you need an active switch. There are also
> passive
> switches that are powered by the tuner.
> 
> I did read on a vdr forum that the DSP can get hot too but i've tested
> this system
> in open air and that was no prioblem but there's a hudge difference
> between open air setup
> and closed chassis.
> 
> I don't use a commercial chassis...that's why it takes so long but this
> case can dissipate 
> more then enough by two huge passive heatsinks and approx 2000
> ventilation holes.
> 
> I don't like the horizontal mounting cause this make it far more
> difficult towards
> the cooling aspect. So, a PCI riser with flex(kapton) board would be a
> far better solution.
> Now i'm stuck with heatpipe to remove any heat that goes above 40°C but
> the card spec
> is built according to atx spec of 35°C.
afair the atx specs have 43 °C for the temp. of the air inside a housing
intel says max.40 for P4
http://www.intel.com/support/processors/pentium4/intnotes.htm

so the atx specs WILL be 40 or above




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