[linux-dvb] DVB-T USB dib0700 device recommendations?

Markus Rechberger mrechberger at gmail.com
Mon Apr 13 08:54:09 CEST 2009


On Mon, Apr 13, 2009 at 4:18 AM, Marco Borm <linux-dvb at retrodesignfan.eu> wrote:
> Hi Henrik,
>
> one of the cards in my system is the dib0700 based "'Hauppauge Nova-T 500".
> Compared with the "TerraTec Cinergy 1400" I would say that the receiver
> sensitivity is worse but the main problem I have is that the card
> consumes a loot of energy (8-13W), which is much more than the
> Terratec(5-6W).

That's a little bit weird USB itself should provide max 5V 500mA which would be
2.5 Watt; if it requires more then the device has to be self powered.

Maybe you can try to use a different USB device (eg. storage) just for
testing the
consumption. USB is supposed to require alot power (the controller).
You might try to unload the ehci/ohci driver too.

Markus

> I calculated this using measure values of the whole system captured with
> a Conrad/Voltcraft Energy Monitor 3000.
> Personally I am little bit shocked about that and wondering if this can
> be true because the dib is a USB-device, but the Voltcraft is one of the
> better measurement device.
> Maybe the VIA usb-hub controller on the board is the problem?!
>
> Would be interesting of someone has the same or other experiences with
> this card or other PCI based cards. Hauppauge ignores all my questions,
> so I can't recomment products of this manufacturer anyway.
>
>
> Greetings,
> Marco
>
> H. Langos wrote:
>> I've been trying to minimize energy consumption [...] But before running
>> out in the street and buying the first dib0700 device I'd like to know if
>> there are any devices that are
>>
>> - especially good [...]
>>
>> or
>>
>> - especially bad [...]
>>
>>
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>>
>>
>
>
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