[vdr] Which DVB-T

Marko Mäkelä marko.makela at hut.fi
Thu Jan 26 09:09:52 CET 2006

On Thu, Jan 26, 2006 at 12:38:44PM +1000, Torgeir Veimo wrote:
> On Thu, 2006-01-26 at 00:55 +0200, Marko Mäkelä wrote:
> > Apparently, the bundled IR receiver module does not work with 3.3 volt
> > supply.  So, the Hauppauge guys chose to drop the 5 volts from the PCI
> > bus by R47 (49.9 ohms) to something like 4.1 volts, so that the cheap
> > IR receiver will still work and not kill the I/O pin on the cx23882.
> > 
> > Next step for me is to get a 3.3 volt capable IR receiver and connect
> > my hardware to the 3.3Vaux and PME# lines on the PCI bus. 
> Do you know any drop-in replacement modules? I've always though the
> bundled one had too low sensitivity as well.

I'm planning to get a Vishay TSOP31236
(http://www.vishay.com/ir-receiver-modules/), which has a wide supply voltage
range of 2.7 to 5.5 volts.  I'm planning to solder a cord directly on its
pins and to apply heat shrink tube, so that I can avoid building a case.

I'm not sure if the modulation frequency is 36 kHz, but most web pages on
the RC5 seem to agree on it.


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