WG: [linux-dvb] Not able to lock to the signal on the given frequency

Fri Sep 8 00:15:16 CEST 2006

 Hello,

One more try.
Nobody an idea?

Is Signal=21845, SNR=61423dB a good value?

Greetings

Bernhard Mähr

> -----Ursprüngliche Nachricht-----
> Von: linux-dvb-bounces at linuxtv.org 
> [mailto:linux-dvb-bounces at linuxtv.org] Im Auftrag von "Bernhard Mähr"
> Gesendet: Freitag, 01. September 2006 00:24
> An: linux-dvb at linuxtv.org
> Betreff: [linux-dvb] Not able to lock to the signal on the 
> given frequency
> 
> Hello,
> 
> I have a Club 3d Zap250mini device on my debian with kernel 2.6.16.28.
> I have a problems to find/watch a channel.
> 
> I was abel to compile the modules and load them. After 
> connecting the device /var/log/messages says:
> 
> Aug 31 23:44:14 xebian kernel: usb 1-1.4: new full speed USB 
> device using ohci_hcd and address 6 Aug 31 23:44:14 xebian 
> kernel: usb 1-1.4: configuration #1 chosen from 1 choice Aug 
> 31 23:44:15 xebian kernel: dvb-usb: found a 'WideView WT-220U 
> PenType Receiver (Typhoon/Freecom)' in cold state, will try 
> to load a firmware Aug 31 23:44:15 xebian kernel: dvb-usb: 
> downloading firmware from file 'dvb-usb-wt220u-02.fw'
> Aug 31 23:44:16 xebian kernel: usbcore: registered new driver 
> dvb_usb_dtt200u Aug 31 23:44:17 xebian kernel: usb 1-1.4: USB 
> disconnect, address 6 Aug 31 23:44:17 xebian kernel: dvb-usb: 
> generic DVB-USB module successfully deinitialized and disconnected.
> Aug 31 23:44:18 xebian kernel: usb 1-1.4: new full speed USB 
> device using ohci_hcd and address 7 Aug 31 23:44:18 xebian 
> kernel: usb 1-1.4: configuration #1 chosen from 1 choice Aug 
> 31 23:44:18 xebian kernel: dvb-usb: found a 'WideView WT-220U 
> PenType Receiver (Typhoon/Freecom)' in warm state.
> Aug 31 23:44:18 xebian kernel: dvb-usb: will use the device's 
> hardware PID filter (table count: 15).
> Aug 31 23:44:18 xebian kernel: DVB: registering new adapter 
> (WideView WT-220U PenType Receiver (Typhoon/Freecom)).
> Aug 31 23:44:18 xebian kernel: DVB: registering frontend 0 
> (WideView USB DVB-T)...
> Aug 31 23:44:18 xebian kernel: input: IR-receiver inside an 
> USB DVB receiver as/class/input/input0 Aug 31 23:44:18 xebian 
> kernel: dvb-usb: schedule remote query interval to 300 msecs.
> Aug 31 23:44:18 xebian kernel: dvb-usb: WideView WT-220U 
> PenType Receiver (Typhoon/Freecom) successfully initialized 
> and connected.
> 
> Then I try tu tune to RTL in Munich:
> 
> xebian:~# dvbtune -f 578000000
> Using DVB card "WideView USB DVB-T"
> tuning DVB-T (in United Kingdom) to 578000000 Hz polling....
> Getting frontend event
> FE_STATUS:
> polling....
> Getting frontend event
> FE_STATUS: FE_HAS_SIGNAL FE_HAS_LOCK FE_HAS_CARRIER 
> FE_HAS_VITERBI FE_HAS_SYNC Bit error rate: 0 Signal strength: 21845
> SNR: 61423
> FE_STATUS: FE_HAS_SIGNAL FE_HAS_LOCK FE_HAS_CARRIER 
> FE_HAS_VITERBI FE_HAS_SYNC
> 
> xebian:~# dvbtune -f 578000000 -m
> Using DVB card "WideView USB DVB-T"
> tuning DVB-T (in United Kingdom) to 578000000 Hz polling....
> Getting frontend event
> FE_STATUS:
> polling....
> Getting frontend event
> FE_STATUS: FE_HAS_SIGNAL FE_HAS_LOCK FE_HAS_CARRIER 
> FE_HAS_VITERBI FE_HAS_SYNC Bit error rate: 0 Signal strength: 21845
> SNR: 61166
> FE_STATUS: FE_HAS_SIGNAL FE_HAS_LOCK FE_HAS_CARRIER 
> FE_HAS_VITERBI FE_HAS_SYNC Signal=21845, Verror=0, 
> SNR=61166dB, BlockErrors=0, (S|L|C|V|SY|) Signal=21845, 
> Verror=0, SNR=61423dB, BlockErrors=0, (S|L|C|V|SY|) 
> Signal=21845, Verror=0, SNR=61166dB, BlockErrors=0, 
> (S|L|C|V|SY|) Signal=21845, Verror=0, SNR=61166dB, 
> BlockErrors=0, (S|L|C|V|SY|) Signal=21845, Verror=0, 
> SNR=61166dB, BlockErrors=0, (S|L|C|V|SY|) Signal=21845, 
> Verror=0, SNR=61166dB, BlockErrors=0, (S|L|C|V|SY|) 
> Signal=21845, Verror=0, SNR=61423dB, BlockErrors=0, (S|L|C|V|SY|)
> 
> Looks good but the next thing I doesn't understand. I thought 
> dvbtune would tune to a frequency and stay at that freqency?!?
> 
> xebian:~# femon
> using '/dev/dvb/adapter0/frontend0'
> FE: WideView USB DVB-T (TERRESTRIAL)
> status 20 | signal ffff | snr eeee | ber 00000000 | unc 
> 00000000 | status 20 | signal ffff | snr eeee | ber 00000000 
> | unc 00000000 | status 20 | signal ffff | snr eeee | ber 
> 00000000 | unc 00000000 | status 20 | signal ffff | snr eeee 
> | ber 00000000 | unc 00000000 | status 20 | signal ffff | snr 
> eeee | ber 00000000 | unc 00000000 | status 20 | signal ffff 
> | snr eeee | ber 00000000 | unc 00000000 | status 20 | signal 
> ffff | snr eeee | ber 00000000 | unc 00000000 | status 20 | 
> signal ffff | snr eeee | ber 00000000 | unc 00000000 | status 
> 20 | signal ffff | snr eeee | ber 00000000 | unc 00000000 | 
> status 1f | signal 5454 | snr efef | ber 00000000 | unc 
> 00000000 | FE_HAS_LOCK status 1f | signal 5555 | snr eeee | 
> ber 00000000 | unc 00000000 | FE_HAS_LOCK status 1f | signal 
> 5555 | snr eeee | ber 00000000 | unc 00000000 | FE_HAS_LOCK 
> status 1f | signal 5555 | snr eeee | ber 00000000 | unc 
> 00000000 | FE_HAS_LOCK status 1f | signal 5555 | snr eeee | 
> ber 00000000 | unc 00000000 | FE_HAS_LOCK status 1f | signal 
> 5555 | snr efef | ber 00000000 | unc 00000000 | FE_HAS_LOCK 
> status 1f | signal 5555 | snr eeee | ber 00000000 | unc 
> 00000000 | FE_HAS_LOCK status 20 | signal ffff | snr eeee | 
> ber 00000000 | unc 00000000 | status 20 | signal ffff | snr 
> eeee | ber 00000000 | unc 00000000 | status 20 | signal ffff 
> | snr eeee | ber 00000000 | unc 00000000 |
> 
> The lines with FE_HAS_LOCK occure while I execute dvbtune -f 
> 578000000 on an other window
> 
> I would like to search for channels (shortend the output):
> 
> xebian:~/w_scan-20060729# ./w_scan
> w_scan version 20060705
> Info: using DVB adapter auto detection.
>    Found DVB-T frontend. Using adapter 
> /dev/dvb/adapter0/frontend0 -_-_-_-_ Getting frontend 
> capabilities-_-_-_-_ frontend WideView USB DVB-T supports 
> INVERSION_AUTO QAM_AUTO TRANSMISSION_MODE_AUTO 
> GUARD_INTERVAL_AUTO HIERARCHY_AUTO FEC_AUTO 
> -_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_
> 177500:
> 184500:
> 191500:
> 578000:
> 586000: signal ok (I999B8C999D999M999T999G999Y999)
> 594000:
> 850000:
> 858000:
> tune to: :586000:I999B8C999D999M999T999G999Y999:T:27500:
> Info: filter timeout pid 0x0011
> Info: filter timeout pid 0x0000
> Info: filter timeout pid 0x0010
> dumping lists (0 services)
> Done.
> 
> Then i start kaffeine with the channel RTL configured 
> manually and I try to do a search for channels.
> 
> xebian:~# kaffeine
> /dev/dvb/adapter0/frontend0 : opened ( WideView USB DVB-T ) 
> Tuning to: RTL / autocount: 0 Using DVB device 0:0 "WideView 
> USB DVB-T"
> tuning DVB-T to 578000000 Hz
> inv:2 bw:3 fecH:9 fecL:9 mod:6 tm:2 gi:4 hier:4 
> ..............................
> Not able to lock to the signal on the given frequency 
> Frontend closed Tuning delay: 4046 ms Creating events file.
> Number of events : 0
> Using DVB device 0:0 "WideView USB DVB-T"
> tuning DVB-T to 212500000 Hz
> inv:2 bw:1 fecH:3 fecL:9 mod:1 tm:1 gi:3 hier:0 
> ..............................
> Not able to lock to the signal on the given frequency Frontend closed
> dvbsi: Cant tune DVB
> Using DVB device 0:0 "WideView USB DVB-T"
> tuning DVB-T to 578000000 Hz
> inv:2 bw:0 fecH:2 fecL:9 mod:1 tm:1 gi:3 hier:0 . LOCKED.
> Transponders: 2/6
> 
> Invalid section length or timeout: pid=17
> 
> 
> Invalid section length or timeout: pid=0
> 
> 
> Invalid section length or timeout: pid=16
> 
> Frontend closed
> Using DVB device 0:0 "WideView USB DVB-T"
> tuning DVB-T to 586000000 Hz
> inv:2 bw:0 fecH:2 fecL:9 mod:1 tm:1 gi:3 hier:0 . LOCKED.
> Transponders: 3/6
> 
> Invalid section length or timeout: pid=17
> 
> 
> Invalid section length or timeout: pid=0
> 
> 
> Invalid section length or timeout: pid=16
> 
> Frontend closed
> Using DVB device 0:0 "WideView USB DVB-T"
> tuning DVB-T to 690000000 Hz
> inv:2 bw:0 fecH:2 fecL:9 mod:1 tm:1 gi:3 hier:0 
> ..............................
> Not able to lock to the signal on the given frequency Frontend closed
> dvbsi: Cant tune DVB
> Using DVB device 0:0 "WideView USB DVB-T"
> tuning DVB-T to 754000000 Hz
> inv:2 bw:0 fecH:2 fecL:9 mod:1 tm:1 gi:3 hier:0 
> ..............................
> Not able to lock to the signal on the given frequency Frontend closed
> dvbsi: Cant tune DVB
> Using DVB device 0:0 "WideView USB DVB-T"
> tuning DVB-T to 834000000 Hz
> inv:2 bw:0 fecH:2 fecL:9 mod:1 tm:1 gi:3 hier:0 
> ..............................
> Not able to lock to the signal on the given frequency Frontend closed
> dvbsi: Cant tune DVB
> Transponders: 6
> dvbsi: The end :)
> Channels found: 0
> 
> Has somebody an idea whats the problem?
> I've been searching for a solution for hours...
> 
> 
> Greetings
> 
> Bernhard Mähr
> 
> -- 
> 
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