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majortom

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Reply with quote  #46 
updated the cn fail points for the stv0900 driver, using modified v4l-updatelee hg tree.
Modified so it'll play nice with the latest updateDVB app, reporting the snr (aka c/n) in dB
for comparison with the git tree.
The 2/3 FEC, S2 8PSK of ION mux of 103W 4040 H 30000 doesn't fail until 6.3 dB, roughly 1 db delta.

Also got rid of delmod and delfec so that it reports the Modulations correctly.
If anyone can repeat that'd be cool.
Or if possible, fill in some of the missing modcodes and lemme know where to find and I will look also.

http://pastebin.com/8xvbxkCA


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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
DarkSky

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Posts: 2,248
Reply with quote  #47 
Quote:
Originally Posted by majortom
updated the cn fail points for the stv0900 driver, using modified v4l-updatelee hg tree.
Modified so it'll play nice with the latest updateDVB app, reporting the snr (aka c/n) in dB
for comparison with the git tree.
The 2/3 FEC, S2 8PSK of ION mux of 103W 4040 H 30000 doesn't fail until 6.3 dB, roughly 1 db delta.

Also got rid of delmod and delfec so that it reports the Modulations correctly.
If anyone can repeat that'd be cool.
Or if possible, fill in some of the missing modcodes and lemme know where to find and I will look also.

http://pastebin.com/8xvbxkCA



I made your changes to the v4l-hg tree ans compiled / installed them with the 3.11 kernel. It now shows the Signal Q in db. I am getting the modulation mis-reported though. Was wondering if that was in you paste bin link you posted for me on the last page also.

I am going to town so I can not do any testing with your spreadsheet until later.

Your modified v4l-hg tree module plays well on ion hd on 4041 with 8.2db.

Good job!
Thanks
majortom

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Reply with quote  #48 
Quote:
Originally Posted by DarkSky

 Was wondering if that was in you paste bin link you posted for me on the last page also.

No, it was not.


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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  #49 
try this tree, was able to fork the last v4l-updatelee repository,
and add on to it the two changes to make it report the parameters correctly,
and report the snr correctly for the latest updateDVB app.
ie - removed delmod, delfec, and added the snr reporting.
Should compile ok, but follow the instructions in the README, as I had to
'make distclean', then disable a few modules that weren't compiling on this
3.11 kernel.

https://bitbucket.org/majortom/v4l-updatelee-mt

This should simplify flopping back and forth for a while between the hg tree and the git tree
so we can all follow along and compare, etc.



__________________
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
andyinyakima

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Reply with quote  #50 
Quote:
The 2/3 FEC, S2 8PSK of ION mux of 103W 4040 H 30000 doesn't fail until 6.3 dB, roughly 1 db delta.


majortom, you just wanted some one to verify the above, correct.

All I have is ku.

I am still having better luck with "picking" then "blindscan" to acquire signal lock.

Border line signals come in with the standard kernel drivers.
Border line signals do not come in with v4l-updatelee drivers.
I am using 83W 11735 H 4440000 as my test. VLC is my tuner standard

DarkSky I believe is using ION; did he say he was getting it now?

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andyinyakima
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Recs: TBS6983, TBS5925 __ Ant: 90cm on SG6100__OSes: Linux with v4l-updatelee drivers __ RPi2 with v4l-updatelee drivers

Open Book, Open Source, You have to Open it to Know what's in it!
majortom

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Reply with quote  #51 
the tree I forked is UDL's last v4l-updatelee HG tree. U can view the details via the "commits" link.
The latest git tree using the stv090x driver for the Prof devices is the one Darksky and I have been noticing has trouble with the weak ION mux.
So using this forked tree, we can flop between the hg tree (to test stv0900) and git tree (to test stv090x)
and still use the latest updateDVB app with proper snr reporting, etc.

I will check out your marginal 83 W TP to see what I get here, if anything.



__________________
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
DarkSky

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Posts: 2,248
Reply with quote  #52 
Quote:
Originally Posted by majortom
try this tree, was able to fork the last v4l-updatelee repository,
and add on to it the two changes to make it report the parameters correctly,
and report the snr correctly for the latest updateDVB app.
ie - removed delmod, delfec, and added the snr reporting.
Should compile ok, but follow the instructions in the README, as I had to
'make distclean', then disable a few modules that weren't compiling on this
3.11 kernel.

https://bitbucket.org/majortom/v4l-updatelee-mt

This should simplify flopping back and forth for a while between the hg tree and the git tree
so we can all follow along and compare, etc.



You have been a busy boy. LOL

I hg cloned your modified tree and everything went smooth with it getting compiled and installed against one of my 3.11 kernels I had installed. Everything is good with it and working right. Attached is a shot of ion pacific HD rock solid at 8.1 db and no BER errors.

I will start testing tomorrow with it. I am going to enjoy some tv with it with what is left of my night.

Thanks,
Ray

Attached Images
Click image for larger version - Name: majortom.png, Views: 47, Size: 428.20 KB 

DarkSky

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Posts: 2,248
Reply with quote  #53 
Quote:
Originally Posted by andyinyakima
I am using 83W 11735 H 4440000 as my test. VLC is my tuner standard


I have not used my ku dish for so long I had to cut back honeysukle (Will not let me post if I spelled it right. Says I have to remove a 4 letter word) and also did some running from wasps that had built a nest on my dish mount but here is my results tuning in RTV on amc 9 KU with my primestar.

majortom's modified modules with old v4l-hg tree using updateDVB:

11735 H 4440
Modulation QPSK
FEC 3/4
Signal Q 7.4-6.7 (varied)
BER 48-262
Was able to view picture with no visible issues

Using the v4l-updatelee-git tree and it's modules I could not get a lock at all. I could not even get a peak at that freq. location on graph after spectrum scan. The only thing I could scan in and lock off the graph peaks on th H polarization scan was 11839 H 26666 QPSK 5/6 at 10.0db. There was no video or audio in that stream to scan in to play just NIT info.
majortom

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Reply with quote  #54 
I was able to improve the weak ion mux on my system by calibrating the home made
13V/18V to servo pulse adapter I built, the polarotor 683 project.
http://rickcaylor.websitetoolbox.com/post/Polor-Rotor-control-5354840?pid=1278974067#post1278974067

I now get 8.8 to 8.9 dB snr on the Ion Mux instead of only 7.6 dB
Suspecting that will be enough to not get errors when using the stv090x driver,
and should also be enough to pull in Andy's weak 83w TP 11735 H 4400, which I wasn't able to pull in until I connected the analog receiver to drive the servo.
That's actually what prompted me to try and optimise the homemade circuit for my system.

In addition, trimmed a neighbor's maple that was just starting to encroach this year, was blocking my view of 58W.
Overall not a bad day.


Attached Images
Click image for larger version - Name: optimised_polarotor683.png, Views: 21, Size: 720.44 KB 

__________________
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

DarkSky

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Posts: 2,248
Reply with quote  #55 
Quote:
Originally Posted by majortom
I was able to improve the weak ion mux on my system by calibrating the home made
13V/18V to servo pulse adapter I built, the polarotor 683 project.
http://rickcaylor.websitetoolbox.com/post/Polor-Rotor-control-5354840?pid=1278974067#post1278974067

I now get 8.8 to 8.9 dB snr on the Ion Mux instead of only 7.6 dB
Suspecting that will be enough to not get errors when using the stv090x driver,
and should also be enough to pull in Andy's weak 83w TP 11735 H 4400, which I wasn't able to pull in until I connected the analog receiver to drive the servo.
That's actually what prompted me to try and optimise the homemade circuit for my system.

In addition, trimmed a neighbor's maple that was just starting to encroach this year, was blocking my view of 58W.
Overall not a bad day.




Good for you majortom.

That is a pretty neat looking servo pulse adapter project. I have thinking about ordering a new feed horn and lnb with a servo where I can tweak my skew when needed. I have a chaparral feed horn with a cal amp mini mag lnb with a servo that came with my dish I never have played with. I need a project; I might make the pulse adapter for the cal amp. I have not seen anyone using this cal amp mini mag so i do not know if it is a very good lnb or not. This way I could test it and find out.

I use to get a better signal with my ku dish on RTV but I noticed today it looked like tree leaves was getting in the way for me on amc9.


majortom

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Reply with quote  #56 
thought for sure that woulda been enough to eliminate the BER on the weaker ION mux using the stv090x driver. Almost, but not quite...still a few errors, despite the improved signal quality. It is watchable now though.




Attached Images
Click image for larger version - Name: optimised_polarotor683_stv090x.png, Views: 20, Size: 524.70 KB 

__________________
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

DarkSky

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Posts: 2,248
Reply with quote  #57 
majortom:

I just did some booting back and forth between your modified v4l-hg tree modules and the new v4l-git modules with updateDVB. I get Signal Q of 8.4db in both on ION.

With your modified tree I had no BER errors. I moved my dish until it started throwing errors at 6.5db.

With v4l-git modules it was throwing BER of about 300 at 8.4db (The best I could do) Had pixelization in picture. Maybe your 8.9db will be solid.
DarkSky

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Posts: 2,248
Reply with quote  #58 
Looks like you posted while I was rebooting. Well at least you squeezed out more than me with your new project. I improved mine a little with my birdog ultra. If only I had a servo setup I could tune.
majortom

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Reply with quote  #59 
What type of feedhorn are you currently using? An LNBF?

I finally got my polarotor PIC chip calibrated so the optimal Horiz and Vert Pulse width lands nearly at the center of the offset adjustment Pot's travel. I can get 12db+ snr on the 97W CBS TP (up from a marginal 11 dB), and 10 db snr on that 83W 11735 H 4400 TP at the flip of the remote. Stupid me kept using a different chip at each test. Since this circuit is using the internal RC Osclillator of the PIC for it's CLK reference, best to use the same chip when reprogramming between test iterations to calibrate the sweet spot for each polarization.

Attached Images
Click image for larger version - Name: polarotor683_optimised_more.png, Views: 15, Size: 514.83 KB 

__________________
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

DarkSky

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Posts: 2,248
Reply with quote  #60 
Quote:
Originally Posted by majortom
What type of feedhorn are you currently using? An LNBF?


I an currently using the BSC621-2 lnb (1st pic). I do not have the KU side hook up any more. The pirmestar has better signal and I can peak my cband more.

I booted over into my debian kernel 3.2 last night and was using the UDL's old stv090x-scan program with old s2-liplianin-v37-udl module tree installed and never turned my computer off. This OS is were I also had the kernel 3.11 installed testing your modified tree with modified v4l-updatelee module tree installed.

Because of that I had two shortcuts on my desktop; one for stv090x-scan and one for updateDVB. I forgot I was on kernel 3.2 today and clicked the updateDVB shortcut. Watched tv for a while and noticed no info for the tp was showing up on the left hand side of updateDVB. I then realized I was still on kernel 3.2 using the old s2-liplianin-v37-udl module tree and updateDVB.

It is raining hard and I have a rock solid picture on ION East HD. I wish I knew what the Signal Q was (pic 2).

Attached Images
Click image for larger version - Name: bsc621-specs1.jpg, Views: 22, Size: 129.60 KB  Click image for larger version - Name: updateDVB-3-2-s2-lip1.png, Views: 22, Size: 736.23 KB 

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