[linux-dvb] mantis branch on jusst.de - vp1034 can't tune to vertical channels

Manu Abraham abraham.manu at gmail.com
Mon Oct 15 02:02:53 CEST 2007


Gernot Pansy wrote:
> On Sunday 14 October 2007 23:40:22 you wrote:
>> Gernot Pansy wrote:

> i have to verify, but it seems that these channels have all a low symbol rate.

22Msps is not a low rate. I guess something else is wrong. Have you looped 
the cables in between multiple tuners ? such as (i can't imagine all the cases)

>> Maybe too much attenuation at that frequency due to cable and or
>> other larger capacitive reactance lumped, probably ? (in case such
>> a frequency exists, wild guesses ....)
>>
>> Trying to guess why the demodulator thinks, no signal ...
>>
>>
>> [ 1022.316000] mb86a16_set_fe: freq=2062 Mhz, symbrt=22000 Ksps
>> [ 1022.316000] mb86a16_write: writing to [0x08],Reg[0x32],Data[0x02]
>> [ 1022.316000] mb86a16_write: writing to [0x08],Reg[0x06],Data[0xdf]
>> [ 1022.320000] mantis start feed & dma
>> [ 1022.320000] mb86a16_write: writing to [0x08],Reg[0x0a],Data[0x3d]
>>
>> --- Snip ---
>>
>> [ 1022.416000] mb86a16_write: writing to [0x08],Reg[0x25],Data[0x01]
>> [ 1022.416000] mb86a16_write: writing to [0x08],Reg[0x2b],Data[0xd4]
>> [ 1022.416000] mb86a16_write: writing to [0x08],Reg[0x2c],Data[0x0f]
>> [ 1022.416000] mb86a16_write: writing to [0x08],Reg[0x0c],Data[0x04]
>> [ 1022.424000] mb86a16_set_fe: NO  -- SIGNAL
>> [ 1022.424000] sync_chk: Status = 00,


Manu




More information about the linux-dvb mailing list