[linux-dvb] TerraTec Cinergy DT USB XS Diversity (Quality with linux worse then with Windows)

Holger Rusch holger at rusch.name
Sun Dec 21 19:31:51 CET 2008

Devin Heitmueller schrieb:
> On Sun, Dec 21, 2008 at 10:33 AM, Holger Rusch <holger at rusch.name> wrote:
>> Shameless repost. No idea? Anybody?
> Are you using the latest code from http://linuxtv.org/hg/v4l-dvb,

Yes, i use the hg tree.

> including the newer 1.20 firmware?

storage:/lib/firmware# ls -la dvb-usb-dib0700-1.20.fw
-r--r--r-- 1 root root 33768 20. Nov 14:08 dvb-usb-dib0700-1.20.fw

(the only .fw file in the directory

storage:/lib/firmware# md5sum dvb-usb-dib0700-1.20.fw
f42f86e2971fd994003186a055813237  dvb-usb-dib0700-1.20.fw

Where do i get the newest one, if this one isnt the newest?

> Have you tried turning off the LNA and see if there is any difference
> in SNR?  While an amplifier can be a good thing in some cases, if
> you're to close to the transmitter the LNA may be driving the signal
> too hard for the demodulator.

I changed:
options dvb_usb_dib0700 force_lna_activation=1
options dvb_usb_dib0700 force_lna_activation=0

and retried (rebootet).

It did not help.

> Is the SNR level always being reported as poor, or only when the
> signal is dropping out?

SNR is constantly poor <45%.

And now?

+ Contact? => http://site.rusch.name/ +

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