Re: [linux-dvb] Hauppauge WINTV Nova-T 500 PCI
Maillist wrote: Joacim wrote: I executed dvbsnoop (with -s singal) during a scan and when finding channels I got: Sig: ~46000 SNR: 0 (?) BER: 0 Can I trust the values from dvbsnoop?? Any better tool?? I use femon from the dvb-tools package (or the VDR-plugin named the same). /Richard I tested 'tzap' and 'femon' [EMAIL PROTECTED]:/home/joacim# tzap -a 0 Nickelodeon using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0' tuning to 59400 Hz video pid 0x03bf, audio pid 0x03be status 0b | signal 8fff | snr | ber 001f | unc 3c4c | status 1f | signal 9036 | snr | ber | unc 2347 | FE_HAS_LOCK status 1f | signal 9040 | snr | ber | unc 3e98 | FE_HAS_LOCK status 1f | signal 902e | snr | ber | unc 3c57 | FE_HAS_LOCK status 1f | signal 9014 | snr | ber | unc 3efe | FE_HAS_LOCK [EMAIL PROTECTED]:/home/joacim# femon -a 0 using '/dev/dvb/adapter0/frontend0' FE: DiBcom 3000MC/P (TERRESTRIAL) status 1f | signal 8e6e | snr | ber | unc 3ef9 | FE_HAS_LOCK status 1f | signal 8e6e | snr | ber | unc 3ef9 | FE_HAS_LOCK status 1f | signal 8e6e | snr | ber | unc 3ef9 | FE_HAS_LOCK status 1f | signal 8e6e | snr | ber | unc 3ef9 | FE_HAS_LOCK status 1f | signal 8e6e | snr | ber | unc 3ef9 | FE_HAS_LOCK I get SNR 0 with both apps, singal varies a bit between them. Is it possible to get SNR info out of Nova-T or could it that bad ??? -- Regards Joacim One other question (since I don't have total grip of this area). I have also 2 Dreamboxes and those are showing: SNR: 99% AGC: 60% BER: 0 SNR, I understand quite well I think. Higher values means better quality and less noise. I should not only focus on high values but also a stable value. AGC, I don't understand. Can someone explain this?? BER, I think I understand this, Bit Error Rate means errors in the signal that could not be interpreted by the receiver. Should be as low as possible. Please correct me and/or fill in to increase my knowledge :) Regards Joacim In a nutshell, AGC (Automatic Gain Control) attempts to present a constant signal output, it's a compensation loop. If the received signal rises beyond a certain level, AGC acts to attenuate it, if the signal decreases, e.g due to fading AGC acts to amplify the signal. Constant voice/video output for a large variation in received signals. Regards Sid. -- Sid Boyce ... Hamradio License G3VBV, Licensed Private Pilot Emeritus IBM/Amdahl Mainframes and Sun/Fujitsu Servers Tech Support Specialist, Cricket Coach Microsoft Windows Free Zone - Linux used for all Computing Tasks ___ linux-dvb mailing list linux-dvb@linuxtv.org http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
Re: [linux-dvb] Hauppauge WINTV Nova-T 500 PCI
BER, I think I understand this, Bit Error Rate means errors in the signal that could not be interpreted by the receiver. Should be as low as possible. Yep. Bit Error Rate is the uncorrectable error rate AFTER decoding the incoming stream. In other words it's the error rate of the transport stream itself. Most errors can be corrected by codes in the stream so if you see the BER averaging much more than 0 you can be assured that your signal will not be reliable. ___ linux-dvb mailing list linux-dvb@linuxtv.org http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
Re: [linux-dvb] Hauppauge WINTV Nova-T 500 PCI
On Thu, 2007-08-30 at 08:06 +0100, Nicolas Will wrote: At the server I have a 1-2 splitter Good quality splitter? Nothing plastic, ugly little metallic boxes are usually better. You will want stuff like that Low Insertion loss splitters, high separation http://ec1.images-amazon.com/images/I/71RHV3VXVFL._AA280_.gif http://www.toolstation.com/images/library/stock/webbig/66100.jpg http://www.dj-electronics-ennogveelmeer.nl/images/Electronica_thuis/203479.jpg As opposed to that crappy supermarket stuff http://www.toolstation.com/images/library/stock/webbig/89954.jpg (w !) http://www.mediacentral.com.au/images/GME-SA164f.JPG I think I have quite good equipment (please tell me if you don't agree). Then it's always room for improvements such as high-end equipment all the way from Monster Cables, etc. Sorry for the referenced pages in Swedish - The amplifier is Televés 5523, http://www.kjell.com/?item=30294path=50,200,320 - F connectors where possible (everywhere but at the TV's and capture cards) - Splitters used is of metallic type with F connectors such as http://www.kjell.com/?item=30432path=50,200,550,560 - Most of the antenna cable is of KTV 1.0/4.8 but I have made one mistake...the cable to the basement and where the server is have KTV 0.8/3.6... Actions I have planned for: - Test the direction of antenna if there are any improvements that can be done. - Replace the antenna cable to KTV 1.0/4.8 Question: - When testing the direction of antenna, is there any good tool I can use on the Linux server with the TV-cards to find the best setting. My regular DVB-T boxes have that good signal so it's hard to use them. (on my Dreambox SNR= 99%, AGC=60%, BER=~0) - What values should a aim for... * Highest possible Signal Strength * Highest possible SNR * Lowest possible BER I executed dvbsnoop (with -s singal) during a scan and when finding channels I got: Sig: ~46000 SNR: 0 (?) BER: 0 Can I trust the values from dvbsnoop?? Any better tool?? Best Regards Joacim ___ linux-dvb mailing list linux-dvb@linuxtv.org http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
Re: [linux-dvb] Hauppauge WINTV Nova-T 500 PCI
Joacim wrote: I executed dvbsnoop (with -s singal) during a scan and when finding channels I got: Sig: ~46000 SNR: 0 (?) BER: 0 Can I trust the values from dvbsnoop?? Any better tool?? I use femon from the dvb-tools package (or the VDR-plugin named the same). /Richard ___ linux-dvb mailing list linux-dvb@linuxtv.org http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
Re: [linux-dvb] Hauppauge WINTV Nova-T 500 PCI
On Fri, 2007-08-31 at 09:38 +0200, Maillist wrote: - The amplifier is Televés 5523, http://www.kjell.com/?item=30294path=50,200,320 As long as it is on-antenna, it should be fine. For the rest, it sounds all good too. Nico ___ linux-dvb mailing list linux-dvb@linuxtv.org http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
Re: [linux-dvb] Hauppauge WINTV Nova-T 500 PCI
Maillist maillist at jarkeborn.se writes: On Thu, 2007-08-30 at 08:06 +0100, Nicolas Will wrote: wa At the server I have a 1-2 splitter Good quality splitter? Nothing plastic, ugly little metallic boxes are usually better. You will want stuff like that Low Insertion loss splitters, high separation http://ec1.images-amazon.com/images/I/71RHV3VXVFL._AA280_.gif http://www.toolstation.com/images/library/stock/webbig/66100.jpg http://www.dj-electronics-ennogveelmeer.nl/images/Electronica_thuis/203479.jpg As opposed to that crappy supermarket stuff http://www.toolstation.com/images/library/stock/webbig/89954.jpg (w !) http://www.mediacentral.com.au/images/GME-SA164f.JPG There are usually two ways of amplifying a tv signal. Either you have a amp close to the tv set. The best way though is to get a amp that has one part down at the tv set and one up at the antenna. The tv-set part sends power through the cable up to the amp. This way it it a amplified signal that is transmitted down to the tv-set. Because the signal is stronger it doesnt get corrupted by other signals as easy. Best regards Micke ___ linux-dvb mailing list linux-dvb@linuxtv.org http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
Re: [linux-dvb] Hauppauge WINTV Nova-T 500 PCI
Joacim wrote: I executed dvbsnoop (with -s singal) during a scan and when finding channels I got: Sig: ~46000 SNR: 0 (?) BER: 0 Can I trust the values from dvbsnoop?? Any better tool?? I use femon from the dvb-tools package (or the VDR-plugin named the same). /Richard I tested 'tzap' and 'femon' [EMAIL PROTECTED]:/home/joacim# tzap -a 0 Nickelodeon using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0' tuning to 59400 Hz video pid 0x03bf, audio pid 0x03be status 0b | signal 8fff | snr | ber 001f | unc 3c4c | status 1f | signal 9036 | snr | ber | unc 2347 | FE_HAS_LOCK status 1f | signal 9040 | snr | ber | unc 3e98 | FE_HAS_LOCK status 1f | signal 902e | snr | ber | unc 3c57 | FE_HAS_LOCK status 1f | signal 9014 | snr | ber | unc 3efe | FE_HAS_LOCK [EMAIL PROTECTED]:/home/joacim# femon -a 0 using '/dev/dvb/adapter0/frontend0' FE: DiBcom 3000MC/P (TERRESTRIAL) status 1f | signal 8e6e | snr | ber | unc 3ef9 | FE_HAS_LOCK status 1f | signal 8e6e | snr | ber | unc 3ef9 | FE_HAS_LOCK status 1f | signal 8e6e | snr | ber | unc 3ef9 | FE_HAS_LOCK status 1f | signal 8e6e | snr | ber | unc 3ef9 | FE_HAS_LOCK status 1f | signal 8e6e | snr | ber | unc 3ef9 | FE_HAS_LOCK I get SNR 0 with both apps, singal varies a bit between them. Is it possible to get SNR info out of Nova-T or could it that bad ??? -- Regards Joacim ___ linux-dvb mailing list linux-dvb@linuxtv.org http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
Re: [linux-dvb] Hauppauge WINTV Nova-T 500 PCI
Joacim wrote: I executed dvbsnoop (with -s singal) during a scan and when finding channels I got: Sig: ~46000 SNR: 0 (?) BER: 0 Can I trust the values from dvbsnoop?? Any better tool?? I use femon from the dvb-tools package (or the VDR-plugin named the same). /Richard I tested 'tzap' and 'femon' [EMAIL PROTECTED]:/home/joacim# tzap -a 0 Nickelodeon using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0' tuning to 59400 Hz video pid 0x03bf, audio pid 0x03be status 0b | signal 8fff | snr | ber 001f | unc 3c4c | status 1f | signal 9036 | snr | ber | unc 2347 | FE_HAS_LOCK status 1f | signal 9040 | snr | ber | unc 3e98 | FE_HAS_LOCK status 1f | signal 902e | snr | ber | unc 3c57 | FE_HAS_LOCK status 1f | signal 9014 | snr | ber | unc 3efe | FE_HAS_LOCK [EMAIL PROTECTED]:/home/joacim# femon -a 0 using '/dev/dvb/adapter0/frontend0' FE: DiBcom 3000MC/P (TERRESTRIAL) status 1f | signal 8e6e | snr | ber | unc 3ef9 | FE_HAS_LOCK status 1f | signal 8e6e | snr | ber | unc 3ef9 | FE_HAS_LOCK status 1f | signal 8e6e | snr | ber | unc 3ef9 | FE_HAS_LOCK status 1f | signal 8e6e | snr | ber | unc 3ef9 | FE_HAS_LOCK status 1f | signal 8e6e | snr | ber | unc 3ef9 | FE_HAS_LOCK I get SNR 0 with both apps, singal varies a bit between them. Is it possible to get SNR info out of Nova-T or could it that bad ??? -- Regards Joacim One other question (since I don't have total grip of this area). I have also 2 Dreamboxes and those are showing: SNR: 99% AGC: 60% BER: 0 SNR, I understand quite well I think. Higher values means better quality and less noise. I should not only focus on high values but also a stable value. AGC, I don't understand. Can someone explain this?? BER, I think I understand this, Bit Error Rate means errors in the signal that could not be interpreted by the receiver. Should be as low as possible. Please correct me and/or fill in to increase my knowledge :) Regards Joacim ___ linux-dvb mailing list linux-dvb@linuxtv.org http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
Re: [linux-dvb] Hauppauge WINTV Nova-T 500 PCI
Also, as I said on the mythlist, try Oliviers reception calibration patch. /Henrik Yes, I will try that this tonight and will post the results of it. I applied that patch and could see a slightly increased signal but didn't solve my problem. Tested it by monitoring with dvbsnoop while running scan. General thinking. I have an amplifier installed close to antenna. The amplifier has 4 outputs and one of them are connected to the server which are placed in the basement. The cable is 25 meters long. At the server I have a 1-2 splitter since I have 2 TV-cards. - Would is good to replace the 1-2 splitter at the server with an amplifier with 2 outputs?? - Should I maximize the output level on the top-level amplifier (I don't remember what level it has right now)? - Can electronic devices be damaged by too much amplified signal?? Regards Joacim On 8/29/07, Henrik Beckman [EMAIL PROTECTED] wrote: realy stupid question, but. Have you tried downloading the firmware again, just to make sure that it´s not an corrupt or truncated file. /Henrik On 8/29/07, Maillist [EMAIL PROTECTED] wrote: On Wed, 2007-08-29 at 07:44 +0200, Maillist wrote: - What should I investigate to get this working? What is the permission on your firmware file? -- Torgeir Veimo [EMAIL PROTECTED] [EMAIL PROTECTED]:/home/joacim# ls -al /lib/firmware/dvb* -rw-r--r-- 1 root root 33277 2007-08-17 00:08 /lib/firmware/dvb-usb-dib0700-03-pre1.fw Regards Joacim ___ linux-dvb mailing list linux-dvb@linuxtv.org http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb ___ linux-dvb mailing list linux-dvb@linuxtv.org http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb ___ linux-dvb mailing list linux-dvb@linuxtv.org http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
Re: [linux-dvb] Hauppauge WINTV Nova-T 500 PCI
On Thu, 2007-08-30 at 08:03 +0200, Maillist wrote: I have an amplifier installed close to antenna. This is where you want it. The amplifier has 4 outputs I hope this is a good quality splitter you got there. and one of them are connected to the server which are placed in the basement. The cable is 25 meters long. Good quality cable? At the server I have a 1-2 splitter Good quality splitter? Nothing plastic, ugly little metallic boxes are usually better. since I have 2 TV-cards. - Would is good to replace the 1-2 splitter at the server with an amplifier with 2 outputs?? Nope, this is not the place it would amplify the signal as well as any noise inserted by the cable, splitters, connectors, etc... - Should I maximize the output level on the top-level amplifier (I don't remember what level it has right now)? If you can, this is the best place to do it. Check your cables, the connectors (switch to well mounted F everywhere), check for the status (rust and all) on the connections outside... Minimize anything that could deteriorate the signal on its way to your tuners. When I moved into my current house, I changed all connectors, got rid of ugly splitters, trashed a supermarket amp+splitter close to the TV and replaced a few cables. I have gained 15% signal :o) Next, I will replace the main antenna cable, change the antenna with one with more elements and an amp at the mast, and make sure all connectivity is protected from the beautiful scottish weather. I should easily get a jump of 20% more signal, mostly by cleaning the path. - Can electronic devices be damaged by too much amplified signal?? If you stick to your antenna-mounted amp, you should be OK. Nico ___ linux-dvb mailing list linux-dvb@linuxtv.org http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
Re: [linux-dvb] Hauppauge WINTV Nova-T 500 PCI
Am Donnerstag, den 30.08.2007, 08:06 +0100 schrieb Nicolas Will: On Thu, 2007-08-30 at 08:03 +0200, Maillist wrote: I have an amplifier installed close to antenna. This is where you want it. The amplifier has 4 outputs I hope this is a good quality splitter you got there. and one of them are connected to the server which are placed in the basement. The cable is 25 meters long. Good quality cable? At the server I have a 1-2 splitter Good quality splitter? Nothing plastic, ugly little metallic boxes are usually better. since I have 2 TV-cards. - Would is good to replace the 1-2 splitter at the server with an amplifier with 2 outputs?? Nope, this is not the place it would amplify the signal as well as any noise inserted by the cable, splitters, connectors, etc... - Should I maximize the output level on the top-level amplifier (I don't remember what level it has right now)? If you can, this is the best place to do it. Check your cables, the connectors (switch to well mounted F everywhere), check for the status (rust and all) on the connections outside... Minimize anything that could deteriorate the signal on its way to your tuners. When I moved into my current house, I changed all connectors, got rid of ugly splitters, trashed a supermarket amp+splitter close to the TV and replaced a few cables. I have gained 15% signal :o) Next, I will replace the main antenna cable, change the antenna with one with more elements and an amp at the mast, and make sure all connectivity is protected from the beautiful scottish weather. I should easily get a jump of 20% more signal, mostly by cleaning the path. - Can electronic devices be damaged by too much amplified signal?? No. Same goes for wrong GPIOs these days. If you stick to your antenna-mounted amp, you should be OK. Nico This is one for the wiki. ___ linux-dvb mailing list linux-dvb@linuxtv.org http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
Re: [linux-dvb] Hauppauge WINTV Nova-T 500 PCI
On Thu, 2007-08-30 at 08:06 +0100, Nicolas Will wrote: At the server I have a 1-2 splitter Good quality splitter? Nothing plastic, ugly little metallic boxes are usually better. You will want stuff like that Low Insertion loss splitters, high separation http://ec1.images-amazon.com/images/I/71RHV3VXVFL._AA280_.gif http://www.toolstation.com/images/library/stock/webbig/66100.jpg http://www.dj-electronics-ennogveelmeer.nl/images/Electronica_thuis/203479.jpg As opposed to that crappy supermarket stuff http://www.toolstation.com/images/library/stock/webbig/89954.jpg (w !) http://www.mediacentral.com.au/images/GME-SA164f.JPG Nico ___ linux-dvb mailing list linux-dvb@linuxtv.org http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
Re: [linux-dvb] Hauppauge WINTV Nova-T 500 PCI
On Wed, 2007-08-29 at 07:44 +0200, Maillist wrote: The firmware I am using is dvb-usb-dib0700-03-pre1.fw and yesterday I tried to downgrade to dvb-usb-dib0700-01.fw but I was not able to load that, always tried to load the previous one (which I deleted to avoid conflicts). The current code absolutely needs the new firmware. You cannot use the previous firmware with this code. In order to downgrade, you would need an old revision of the code, which I guess is a possible thing to get, but you would bump into a lot of problems it had, like remotes not being available, more tuning problems, etc... We all hope that Patrick will have had good discussions with his colleagues/friends, and will come up with new stuff to sort out the last few things that are annoying with this device right now. Nico ___ linux-dvb mailing list linux-dvb@linuxtv.org http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
Re: [linux-dvb] Hauppauge WINTV Nova-T 500 PCI
On Wed, 2007-08-29 at 07:44 +0200, Maillist wrote: The firmware I am using is dvb-usb-dib0700-03-pre1.fw and yesterday I tried to downgrade to dvb-usb-dib0700-01.fw but I was not able to load that, always tried to load the previous one (which I deleted to avoid conflicts). The current code absolutely needs the new firmware. You cannot use the previous firmware with this code. In order to downgrade, you would need an old revision of the code, which I guess is a possible thing to get, but you would bump into a lot of problems it had, like remotes not being available, more tuning problems, etc... We all hope that Patrick will have had good discussions with his colleagues/friends, and will come up with new stuff to sort out the last few things that are annoying with this device right now. Nico OK. Thanks for the explaination. ___ linux-dvb mailing list linux-dvb@linuxtv.org http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
Re: [linux-dvb] Hauppauge WINTV Nova-T 500 PCI
On Wed, 2007-08-29 at 07:44 +0200, Maillist wrote: - What should I investigate to get this working? What is the permission on your firmware file? -- Torgeir Veimo [EMAIL PROTECTED] [EMAIL PROTECTED]:/home/joacim# ls -al /lib/firmware/dvb* -rw-r--r-- 1 root root 33277 2007-08-17 00:08 /lib/firmware/dvb-usb-dib0700-03-pre1.fw Regards Joacim ___ linux-dvb mailing list linux-dvb@linuxtv.org http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
[linux-dvb] Hauppauge WINTV Nova-T 500 PCI
I am trying to setup a MythTV backend with two Hauppauge WINTV Nova-T 500 PCI, which means in total 4 adapters (2 per card). The system are running Kubuntu 7.04 (64 bit) with kernel 2.6.20-16. The cards are installed and dmesg shows that the cards are found correctly. When scanning for channels, I can not receive all channels on all adapters and the signal strength is about 50-65%. When testing the antenna cables connected to a regular DVB-T box I get signal strength about 91%. On 2 and sometimes 3 adapters I can get all channels but have not succeeded on all adapters. I have set options dvb-usb-dib0700 force_lna_activation=1 in /etc/modprobe.d/options The firmware I am using is dvb-usb-dib0700-03-pre1.fw and yesterday I tried to downgrade to dvb-usb-dib0700-01.fw but I was not able to load that, always tried to load the previous one (which I deleted to avoid conflicts). - What should I investigate to get this working? - What firmware should I use? - How can I do a firmware upgrade/downgrade? The cards is installed according to this guide: http://mythtv.org/wiki/index.php/Hauppauge_WinTV_Nova-T_500_PCI I would really appreciate any help on this. BR Joacim ___ linux-dvb mailing list linux-dvb@linuxtv.org http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
