Okay,
we need to put then an eye on your hardware setup - this is a problem before
the DVB-S cards. You where talking about 3 DVB-S cards, but how many LNB's
do you have? How have you wired the system? We have: horizontal / vertical
polarization and then lower and upper band! This makes 2x2 = 4 possible
areas. So, if you go with more than 2 cards - 3 or 4 or more, you need a
quad LNB with maybe some additional hardware.
Martin
-----Urspr?ngliche Nachricht-----
Von: vdr-bounces@xxxxxxxxxxx [mailto:vdr-bounces@xxxxxxxxxxx] Im Auftrag von
Peer Oliver Schmidt
Gesendet: Montag, 29. Januar 2007 15:31
An: VDR Mailing List
Betreff: Re: Problems receiving couple of german channels DVB-S
Hello list,
> I have problems receiving some channels (ARD, ZDF,N3, DMAX) in good
> quality. Receiving other channels (SAT.1, RTL, Pro7, Das Vierte) works
> just fine.
I've tried using szap to see if I can find the problem in one of my
DVB-S cards. Unfortunately, no matter which card I use, I have bad
reception for a couple of channels, and good reception for others.
Here is an excerpt from the szap log:
Bad reception (ZDF):
vdr:~# szap -a 0 -n 2
reading channels from file '/root/.szap/channels.conf'
zapping to 2 'ZDF':
sat 0, frequency = 11954 MHz H, symbolrate 27500000, vpid = 0x006e,
apid = 0x0078
using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0'
status 00 | signal b9b9 | snr fffe | ber 00000003 | unc 00000003 |
status 01 | signal b9b9 | snr fffe | ber 00000003 | unc 00000003 |
status 00 | signal b9b9 | snr fffe | ber 00000003 | unc 00000003 |
status 1f | signal b9b9 | snr fffe | ber 0000e668 | unc 0000e668 |
FE_HAS_LOCK
status 1f | signal baba | snr fffe | ber 0000000c | unc 0000000c |
FE_HAS_LOCK
status 1f | signal b9b9 | snr fffe | ber 0000000b | unc 0000000b |
FE_HAS_LOCK
status 1f | signal b9b9 | snr fffe | ber 0000001d | unc 0000001d |
FE_HAS_LOCK
status 1f | signal b9b9 | snr fffe | ber 00000021 | unc 00000021 |
FE_HAS_LOCK
Good reception (RTL):
vdr:~# szap -a 0 -n 5
reading channels from file '/root/.szap/channels.conf'
zapping to 5 'RTL':
sat 0, frequency = 12188 MHz H, symbolrate 27500000, vpid = 0x00a3,
apid = 0x0068
using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0'
status 01 | signal b8b8 | snr fffe | ber 0000001a | unc 0000001a |
status 1f | signal b7b7 | snr fffe | ber 00000000 | unc 00000000 |
FE_HAS_LOCK
status 1f | signal b9b9 | snr fffe | ber 00000000 | unc 00000000 |
FE_HAS_LOCK
status 1f | signal b8b8 | snr fffe | ber 00000000 | unc 00000000 |
FE_HAS_LOCK
status 1f | signal b9b9 | snr fffe | ber 00000000 | unc 00000000 |
FE_HAS_LOCK
status 1f | signal b9b9 | snr fffe | ber 00000000 | unc 00000000 |
FE_HAS_LOCK
The interrupts:
vdr:~# cat /proc/interrupts
CPU0
0: 2373754725 IO-APIC-edge timer
1: 9 IO-APIC-edge i8042
8: 1 IO-APIC-edge rtc
9: 0 IO-APIC-level acpi
14: 4835536 IO-APIC-edge ide0
15: 219 IO-APIC-edge ide1
50: 0 IO-APIC-level ohci_hcd:usb1
58: 0 IO-APIC-level ehci_hcd:usb2
66: 441811465 IO-APIC-level eth0
217: 298617322 IO-APIC-level saa7146 (0)
225: 265391314 IO-APIC-level saa7146 (1)
233: 271195814 IO-APIC-level saa7146 (2)
NMI: 0
LOC: 2373832282
ERR: 0
MIS: 0
lshw Information for one of the cards (all identical):
*-multimedia:0
description: Multimedia controller
product: SAA7146
vendor: Philips Semiconductors
physical id: 6
bus info: pci@05:06.0
version: 01
width: 32 bits
clock: 33MHz
capabilities: bus_master
configuration: driver=budget dvb
resources: iomemory:da000000-da0001ff irq:217
Any and help is greatly appreciated.
--
Best regards
Peer Oliver Schmidt
PGP Key ID: 0x83E1C2EA
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