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jowski

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Reply with quote  #16 
Ok Mister UDL; now you're really done it!!!  The ATSC addition is way too cool for anyone.  Now I have two requests.  First, can we get the graph?  Second, can we get the Virtual Channel ID pulled with the tuning?  Third, how about pulling the Virtual Channel ID's as a background process for everything it finds?  Fourth, can we have a user selectable horizontal axis based on the whole number of the Virtual Channel ID's?

See how easy I am?!  Just because I don't count so good for a guy who graduated with a math degree doesn't mean my mind isn't working.  Does the code make sure a voltage isn't set if the LOF is set to 0?  I'll bet there's something in the driver info that says if it'll accept LNB voltages, right?

Excellent work!  Thanks.

Jim

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updatelee

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Reply with quote  #17 
I'll look into spectrum scan when I get back in June, a quick look at the xc5000 (Hauppauge 950Q) driver looks like it can be done. I havent looked at other ATSC tuners yet but will.

I really dont know where or what the Virtual ID thing is, I'll google it later, but I leave tomorrow morning so I think thats a June thing too. Same with horizontal axis, not a clue what that is lol.

If the system = ATSC then it skips the voltage setting as well as a few other things, tone, fec, etc

UDL

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TBS6925/5980, Prof 7301/7500/8000, Genpix Skywalker-1, Skystar 2 Express HD
Hauppauge 950Q/Aero/Aero-m, Kworld 330U/435v3/445v3

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updatelee

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Reply with quote  #18 
OK looked up Virtual ID, its found on PID 0x1fb tableid 0xc8

It shouldnt be hard to implement when I get back, just no time right now.

UDL

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TBS6925/5980, Prof 7301/7500/8000, Genpix Skywalker-1, Skystar 2 Express HD
Hauppauge 950Q/Aero/Aero-m, Kworld 330U/435v3/445v3

I use Linux and support open source projects
Download my opensrc projects at http://updatelee.blogspot.com
majortom

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Reply with quote  #19 
this website has a decent breakdown of all the various atsc tables
here's the Terrestrial Virtual Channel Table  (TVCT)
http://www.etherguidesystems.com/Help/SDOs/atsc/syntax/tablesections/TVCT.aspx


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Perfect 10 7.5' mesh Chapparal C/Ku Co-Rotor feed, Norsat 8115 CBAND, Norsat 4106A Ku Thomson Saginaw Actuator, Vbox positioner,
Home Brew Polarotor683 Servo circuit. Openbox S9, Prof7500, v4l-updatelee linux drivers installed.
ricardo's geo-orbit archive: https://web.archive.org/web/20150516202529/http://www.geo-orbit.org:80/sizepgs/tuningp2.html#anchor469886
majortom

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Reply with quote  #20 
UDL,
After I found where to remove the 700 MHz Freqs and change the number of tries to 5 between channels, I see ya already did that with another commit
In addition I removed ch 2 thru 6 only because I have a High pass filter in line to attenuate anything below 156 MHz (some strong local FM stations here in the hood). That got me down to 90 seconds here. 100 seconds if I include CH 2 - 6

Aside from jowski's wishlist, the only other thing I can think of right now for ATSC unique from DVB-S(2) is maybe scale the X axis in terms of RF channel numbers for ATSC, then maybe include the RF CH  and Freq in tune / scanning dialogs for reference? Everyone can relate to broadcast TV Channel numbers and might make it easier for people to guess where to click to manually tune one.

This should be real cool for summertime tropo finds. Thanks again for doing this.


Edit: oh yeah, I should be able to test it with QAM using the Aero-m.
There is still some clear QAM on our local cable system here. all the local OTA networks, and a couple others.
Once in a while I'll spot some On-Demand type PPV movies in clear QAM also...LOL
We'll see how that goes next..



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Perfect 10 7.5' mesh Chapparal C/Ku Co-Rotor feed, Norsat 8115 CBAND, Norsat 4106A Ku Thomson Saginaw Actuator, Vbox positioner,
Home Brew Polarotor683 Servo circuit. Openbox S9, Prof7500, v4l-updatelee linux drivers installed.
ricardo's geo-orbit archive: https://web.archive.org/web/20150516202529/http://www.geo-orbit.org:80/sizepgs/tuningp2.html#anchor469886
updatelee

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Reply with quote  #21 
my 950Q scans in 50sec pretty reasonable for scanning the entire spectrum I think eh. I should be able to speed this up some more when I get back by tweaking he driver side.

Im going to look at getting the xc5000 to spectrum scan, I'll look at other drivers as well. Overlaying the channel numbers shouldnt be too hard either. The xc5000 looks like it has the ability, I dont have a datasheet, just going by looking over the drivers. Man datasheets are tough to get.

Always more idea's then time eh, I get three weeks off in the summer, I'll have to have my own updatelee's summer of code like google does lol. I really want to get DSS working, but its tough without a concrete datasheet. Still worth trying.

UDL

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TBS6925/5980, Prof 7301/7500/8000, Genpix Skywalker-1, Skystar 2 Express HD
Hauppauge 950Q/Aero/Aero-m, Kworld 330U/435v3/445v3

I use Linux and support open source projects
Download my opensrc projects at http://updatelee.blogspot.com
majortom

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Reply with quote  #22 
The hauppauge aero-m scans in about 80 seconds.
It doesn't report as many failed tunes. Like if there's a whiff of a signal
it will report it, where the inDtube will indicate No Lock for anything below 15 dB SNR.
should be interesting if ya get anywhere with spectrumscan

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Perfect 10 7.5' mesh Chapparal C/Ku Co-Rotor feed, Norsat 8115 CBAND, Norsat 4106A Ku Thomson Saginaw Actuator, Vbox positioner,
Home Brew Polarotor683 Servo circuit. Openbox S9, Prof7500, v4l-updatelee linux drivers installed.
ricardo's geo-orbit archive: https://web.archive.org/web/20150516202529/http://www.geo-orbit.org:80/sizepgs/tuningp2.html#anchor469886
updatelee

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Reply with quote  #23 
It all depends on if I can get a signal strength reading without a lock. Every tuner/demod is different, all three of the devices were taking about here use different chipsets, so we'll have to see. And even then that doesn't tell us anything about speed. I'll see what I can do when I get back

UDL

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TBS6925/5980, Prof 7301/7500/8000, Genpix Skywalker-1, Skystar 2 Express HD
Hauppauge 950Q/Aero/Aero-m, Kworld 330U/435v3/445v3

I use Linux and support open source projects
Download my opensrc projects at http://updatelee.blogspot.com
majortom

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Reply with quote  #24 
well, I blew away the local repo and did a fresh pull from bitbucket and recompiled.
I got the inDtube and the Aero-m doing their scan in ~ 40 seconds now (by eliminating ch2 thru 6).


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Perfect 10 7.5' mesh Chapparal C/Ku Co-Rotor feed, Norsat 8115 CBAND, Norsat 4106A Ku Thomson Saginaw Actuator, Vbox positioner,
Home Brew Polarotor683 Servo circuit. Openbox S9, Prof7500, v4l-updatelee linux drivers installed.
ricardo's geo-orbit archive: https://web.archive.org/web/20150516202529/http://www.geo-orbit.org:80/sizepgs/tuningp2.html#anchor469886
majortom

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Reply with quote  #25 
3 instances of updatedvb running 3 different adapters. Prof 7500 and two ATSC cards. cpu ~70 to 80% on this lil old run of the mill wally world laptop. low budget, came with a Celeron processor, subsequently  swapped for Intel CoreDuo @ 2.2 Ghz and 4 GB of Ram couple years ago.


cat /proc/meminfo
MemTotal:        4032140 kB
MemFree:         1330776 kB


Attached Images
Click image for larger version - Name: updateDVB_3adapters.png, Views: 37, Size: 731.86 KB 

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Perfect 10 7.5' mesh Chapparal C/Ku Co-Rotor feed, Norsat 8115 CBAND, Norsat 4106A Ku Thomson Saginaw Actuator, Vbox positioner,
Home Brew Polarotor683 Servo circuit. Openbox S9, Prof7500, v4l-updatelee linux drivers installed.
ricardo's geo-orbit archive: https://web.archive.org/web/20150516202529/http://www.geo-orbit.org:80/sizepgs/tuningp2.html#anchor469886

majortom

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Reply with quote  #26 
hehe I know this is crazy, but wouldn't it be cool to be able to see the 8 VSB constellation lines some day?


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Perfect 10 7.5' mesh Chapparal C/Ku Co-Rotor feed, Norsat 8115 CBAND, Norsat 4106A Ku Thomson Saginaw Actuator, Vbox positioner,
Home Brew Polarotor683 Servo circuit. Openbox S9, Prof7500, v4l-updatelee linux drivers installed.
ricardo's geo-orbit archive: https://web.archive.org/web/20150516202529/http://www.geo-orbit.org:80/sizepgs/tuningp2.html#anchor469886
majortom

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Reply with quote  #27 
found this chinese website link to an lgdt3305 datasheet. Looks kinda high level, nuthin deep like registers or anything. atsc demod from the aero-m. I can't read chinese and don't see where ya can save it locally.





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Perfect 10 7.5' mesh Chapparal C/Ku Co-Rotor feed, Norsat 8115 CBAND, Norsat 4106A Ku Thomson Saginaw Actuator, Vbox positioner,
Home Brew Polarotor683 Servo circuit. Openbox S9, Prof7500, v4l-updatelee linux drivers installed.
ricardo's geo-orbit archive: https://web.archive.org/web/20150516202529/http://www.geo-orbit.org:80/sizepgs/tuningp2.html#anchor469886
majortom

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Reply with quote  #28 
UDL, I think we need some logic to select a different list of frequencies for North American Cable clear QAM vs North American ATSC broadcast.

With the Aero-M I'm able to lock and view a couple cable 256 QAM channels in VHF HI band where a couple Broadcast & cable freqs line up, but nothing in the UHF Band.
Note to get it to work, select ATSC and set the modulation to 256 QAM, then blindscan.

http://en.wikipedia.org/wiki/North_American_broadcast_television_frequencies

http://en.wikipedia.org/wiki/North_American_cable_television_frequencies

edit: thinkin this list outta work, at least for around here
http://www.linuxtv.org/hg/dvb-apps/file/3ee111da5b3a/util/scan/atsc/us-Cable-IRC-center-frequencies-QAM256



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Perfect 10 7.5' mesh Chapparal C/Ku Co-Rotor feed, Norsat 8115 CBAND, Norsat 4106A Ku Thomson Saginaw Actuator, Vbox positioner,
Home Brew Polarotor683 Servo circuit. Openbox S9, Prof7500, v4l-updatelee linux drivers installed.
ricardo's geo-orbit archive: https://web.archive.org/web/20150516202529/http://www.geo-orbit.org:80/sizepgs/tuningp2.html#anchor469886
majortom

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Reply with quote  #29 
cable freqs from the dvb-apps scan app, edited with vim, to line up with code in dvbsettings.cpp. recompiled and renamed the exec to 'updatedvb_qam' for testing qam.
Seems to work. only 94 seconds to scan them all, while my TV takes around 5 minutes to do the same thing

http://pastebin.com/KvhLzu48




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Perfect 10 7.5' mesh Chapparal C/Ku Co-Rotor feed, Norsat 8115 CBAND, Norsat 4106A Ku Thomson Saginaw Actuator, Vbox positioner,
Home Brew Polarotor683 Servo circuit. Openbox S9, Prof7500, v4l-updatelee linux drivers installed.
ricardo's geo-orbit archive: https://web.archive.org/web/20150516202529/http://www.geo-orbit.org:80/sizepgs/tuningp2.html#anchor469886
merkin

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Reply with quote  #30 
There are three different flavors for QAM...STD, IRC, HRC.  
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Fellow Members, your posts are welcome here! Do not worry about posting everything perfect. Different receivers and LNB's will give you different Frequencies and Symbol Rates. Some set top boxes, PCI cards and USB receivers, Do Not Require all of the same information that others may need. It is not Required to post everything that others may need to tune in a feed. It is just most important to share the find. We can always adjust the Frequency and Symbol Rates and try the various Modulations and FEC's on our own receivers until we get a lock and then give a polite reply with what works for your receiver, as that information might help others as well. We all appreciate the efforts and energy of the Posters!

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