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[linux-dvb] Re: AverTV DVB-T un-viewable QAM_64 channels (QAM_16 work perfectly) ...massive noise
Hi Rick,
The Avermedia DVB-T does need a strong signal.. at least 65% or better.
There is a revision 2 Avermedia due out in a month or so which will be
using the Samsung DVB-T, which uses a Zarlink MT352 demodulator - this
seems to have a much better reception with a lower signal.
I've got a sample unit which I'm testing at the moment, but unfortunately
I haven't had much personal time to test it using the current DVB drivers
- something I'm hoping to do soon though. I'll let the list know how it
goes if there is interest.
cheers,
Gizmomelb
(Australia)
-----Original Message-----
From: Rick Hamnett [mailto:rick@packetoverdose.com]
Sent: Saturday, 1 May 2004 6:47 AM
To: linux-dvb@linuxtv.org
Subject: [linux-dvb] Re: AverTV DVB-T un-viewable QAM_64 channels
(QAM_16 work perfectly) ...massive noise
Thanks I just bought one of these cards today and had everything working
fine in 30 minutes including the remote etc for mythtv... all my QAM_64
issues etc are resolved and i have a perfect picture
It looks like the avermedia card just needs some mega strong signal,
??possibly?? because its using some outdated technology
Also, just one problem with your remote config there..... the volume +
and - are set up to do left and right, not [ and ] for volume up and
down in myth, but then.....if you set them to [ and ] the arrow keys
wouldnt work for directions in mythmusic etc.... how can we get round that?
Kind Regards
Richard Hamnett
Simon Kilvington wrote:
> I've got a Hauppauge WinTV Nova-T PCI Digital TV Card - the one that
> says FreeView on the box - and that came with a remote - plus you
> don't need LIRC, you just need to "modprobe hid" and it automatically
> sends events from /dev/input/event0 to the keyboard buffer.
>
> Here's the key map I'm using for the budget-ci.c driver:
>
> /*
> * key map for remote that comes with Hauppauge WinTV Nova-T PCI
> Digital TV Card
> * generate keys for MythTV rather than KEY_REWIND, KEY_PLAY, etc
> */
> static u16 key_map[64] = {
> /* 0x0X */
> KEY_0, KEY_1, KEY_2, KEY_3, KEY_4, KEY_5, KEY_6, KEY_7, KEY_8,
> KEY_9,
> 0,
> KEY_RED, /* red */
> KEY_I, /* unlabeled */
> KEY_M, /* menu */
> 0,
> KEY_F9, /* mute */
> /* 0x1X */
> KEY_RIGHT, /* right/vol+ */
> KEY_LEFT, /* left/vol- */
> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
> KEY_PAGEDOWN, /* skip */
> KEY_ESC, /* back/exit */
> /* 0x2X */
> KEY_UP, /* up/ch+ */
> KEY_DOWN, /* down/ch- */
> 0, 0,
> KEY_PAGEUP, /* replay */
> KEY_ENTER, /* ok */
> 0, 0, 0,
> KEY_BLUE, /* blue */
> 0, 0, 0, 0,
> KEY_GREEN, /* green */
> 0,
> /* 0x3X */
> KEY_P, /* pause */
> 0,
> KEY_COMMA, /* rewind */
> 0,
> KEY_DOT, /* fforward */
> KEY_SPACE, /* play */
> KEY_P, /* stop */
> KEY_R, /* record */
> 0, 0, 0,
> KEY_O, /* go */
> KEY_W, /* full */
> KEY_POWER, /* power */
> KEY_YELLOW, /* yellow */
> 0,
> };
>
>
> Rick Hamnett wrote:
>
>> Hi thanks for your input
>>
>> The thing is the channels even QAM_64 work ok on windows, plus my
>> flatmate has a proper digital freeview tvbox and he gets perfect
>> reception too, tried it on my aerial socket too
>>
>> If i bought a cheap happuage nova-t pci card ..... i think it doesnt
>> come with a remote....but i want a remote....what can i do?
>>
>> Thanks
>> Rick
>>
>> Ed Wildgoose wrote:
>>
>>> Hi Rick
>>>
>>>> The scan made the output
>>>> ITV
>>>> News:834166670:INVERSION_OFF:BANDWIDTH_8_MHZ:FEC_2_3:FEC_1_2:QAM_64:TRANSMISSION_MODE_2K:GUARD_INTERVAL_1_32:HIERARCHY_NONE:2850:2851:8588
>>>>
>>>>
>>> Yep, looks reasonable
>>>
>>>
>>>>
>>>> Ive also tried to # tzap "ITV News" and i get lock as follows
>>>>
>>>> gentoo dvbtune-0.5 # tzap "ITV News"
>>>> using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0'
>>>> tuning to 834166670 Hz
>>>> status 01 | signal ffff | snr 8198 | ber ffffffff | unc ffffffff |
>>>> status 1f | signal ffff | snr 84e8 | ber 0003ffe9 | unc ffffffff |
>>>> FE_HAS_LOCK
>>>> status 1f | signal ffff | snr 7657 | ber 00000362 | unc ffffffff |
>>>> FE_HAS_LOCK
>>>> status 1f | signal ffff | snr 8ca8 | ber 00000e4a | unc 00000000 |
>>>> FE_HAS_LOCK
>>>> status 1f | signal ffff | snr 6226 | ber 0000057c | unc 00000040 |
>>>> FE_HAS_LOCK
>>>> status 1f | signal ffff | snr 6f46 | ber 0000082d | unc 00000000 |
>>>> FE_HAS_LOCK
>>>> status 1f | signal ffff | snr 6b56 | ber 000014bf | unc 00000000 |
>>>> FE_HAS_LOCK
>>>> status 1f | signal ffff | snr 6156 | ber 000002ff | unc 00000000 |
>>>> FE_HAS_LOCK
>>>> status 1f | signal ffff | snr 8aa8 | ber 0000129d | unc ffffffff |
>>>> FE_HAS_LOCK
>>>> status 1f | signal ffff | snr 89e8 | ber 00000399 | unc 00000000 |
>>>> FE_HAS_LOCK
>>>
>>>
>>>
>>>
>>>
>>> Oops, those numbers look pretty bad... lots of uncorrectable errors
>>> (unc), and the ber seems high (but I think it depends on the driver).
>>>
>>> Have you got a normal digi box to compare quality with? Perhaps the
>>> signal is just weak in your area?
>>> Suggest that there is a lot to be said for shopping around for a
>>> cheap Nova-T, and keep this for a backup/second card... Perhaps the
>>> drivers will sort themselves out in time... I have a full featured
>>> £250 TT card that I thought was going to be great, and ended up with
>>> a Nova because it was FAR less hassle. It is working ok as a second
>>> card now though...
>>>
>>> Good luck, sorry no more ideas...
>>
>>
>>
>>
>>
>>
>
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