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MTI camera and Hauppauge PVR-150 framegrabber.

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  MTI camera and Hauppauge PVR-150 framegrabber. peter@easthope.ca - 2017-03-09 21:50 +0100
    Re: MTI camera and Hauppauge PVR-150 framegrabber. Dan Ritter <dsr@randomstring.org> - 2017-03-10 00:20 +0100
      Re (2): MTI camera and Hauppauge PVR-150 framegrabber. peter@easthope.ca - 2017-03-10 03:30 +0100
        Re: Re (2): MTI camera and Hauppauge PVR-150 framegrabber. Dan Ritter <dsr@randomstring.org> - 2017-03-10 13:40 +0100
          Re: MTI camera and Hauppauge PVR-150 framegrabber. peter@easthope.ca - 2017-03-10 17:00 +0100
            Re: MTI camera and Hauppauge PVR-150 framegrabber. peter@easthope.ca - 2017-03-11 05:20 +0100
              JVC camera and Hauppauge PVR-150 framegrabber. Was: Re: MTI camera ... peter@easthope.ca - 2017-03-23 02:00 +0100
                Re: JVC camera and Hauppauge PVR-150 framegrabber. Was: Re: MTI  camera ... Dan Ritter <dsr@randomstring.org> - 2017-03-23 15:40 +0100

#178626 — MTI camera and Hauppauge PVR-150 framegrabber.

The Hauppauge PVR-150 framegrabber is installed in a PC 
and an old MTI camera is connected for tests.

The camera output appears to be recognized by the V4L2 
Test Bench.  A screenshot, with the camera on, is here.
http://easthope.ca/MTItoPVR150screen.jpg

If the camera is powered off the "image" changes from the 
screenshot to scattered lines.

I expect the image to be a 2x3 or 3x4 rectangle rather than 
the narrow band in the screenshot.  Synchronization is 
failing?  Faulty framegrabber?  

Suggestions?

Thanks,            ... Peter E.

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#178628

On Thu, Mar 09, 2017 at 12:03:58PM -0800, peter@easthope.ca wrote:
> The Hauppauge PVR-150 framegrabber is installed in a PC 
> and an old MTI camera is connected for tests.
> 
> The camera output appears to be recognized by the V4L2 
> Test Bench.  A screenshot, with the camera on, is here.
> http://easthope.ca/MTItoPVR150screen.jpg
> 
> If the camera is powered off the "image" changes from the 
> screenshot to scattered lines.
> 
> I expect the image to be a 2x3 or 3x4 rectangle rather than 
> the narrow band in the screenshot.  Synchronization is 
> failing?  Faulty framegrabber?  

There are a lot of settings that are available to tweak with
v4l2-ctl; it's in the v4l-utils  package, if you haven't
installed that yet.

I would start with making sure the cable to the camera is good,
then check that you've set the right input.

-dsr-

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#178630 — Re (2): MTI camera and Hauppauge PVR-150 framegrabber.

*	From: Dan Ritter dsr@randomstring.org3
*	Date: Thu, 9 Mar 2017 18:11:51 -0500
> I would start with making sure the cable to the camera is good,

Tried three different coax cables.  All give essentially the window 
illustrated in http://easthope.ca/MTItoPVR150screen.jpg .  Bright 
strip at the top; black below. 

> ... then check that you've set the right input.

When the camera is powered on and off the pattern in the bright strip 
changes.  Video mute makes the same change.  Composite 1 must be 
right. 

> There are a lot of settings that are available to tweak with 
> v4l2-ctl; it's in the v4l-utils  package, if you haven't 
> installed that yet.

Installed it yesterday.  Have read all the settings in the V4L2 Test 
Bench and  understand about 1/3 rd of them.  Haven't yet studied 
settings in v4l2-ctl.

The "General Settings" in the V4L2 Test Bench are understandable. 
Several of them are set automatically and consistent with specs on the 
JVC camera.  Seems there should be a reasonable output image rather 
than just a white strip above black.  

There is no switch or trimmer on the Hauppauge card to be set wrong.  
Wondering about a faulty card.  Tempted to get another from the store.  
If it gives the same output, I'll be more convinced of a problem in 
software configuration.

Thanks for the help.  This has become a non-trivial problem,

                       ... P.  
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#178643 — Re: Re (2): MTI camera and Hauppauge PVR-150 framegrabber.

On Thu, Mar 09, 2017 at 06:10:44PM -0800, peter@easthope.ca wrote:
> *	From: Dan Ritter 
> > I would start with making sure the cable to the camera is good,
> 
> Tried three different coax cables.  All give essentially the window 
> illustrated in http://easthope.ca/MTItoPVR150screen.jpg .  Bright 
> strip at the top; black below. 

Coax?

The coax connector on the PVR150 expects to be connecting a CATV
signal. Is your camera sending that? If so, which channel?
You'll need to set the PVR150's tuner to match.

You should also have inputs for RCA composite and SVideo Y/C,
which don't need to be tuned.

-dsr-

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#178650

*	From: Dan Ritter dsr@randomstring.org
*	Date: Fri, 10 Mar 2017 07:34:35 -0500
> Coax?

Yes, the camera output is composite video through a BNC connector.  
Specs for a similar camera here.  
http://pro.jvc.com/prof/attributes/specs.jsp?model_id=MDL100970&feature_id=03
It can connect to the receiving device via a coaxial cable with a BNC 
connector on each end.  The PVR-150 receives composite video through a 
RCA socket.  An adapter is used to connect the BNC on the end of the 
cable to the RCA on the card.

> The coax connector on the PVR150 expects to be connecting a CATV
> signal. 

This card has two female F connectors.  
https://en.wikipedia.org/wiki/F_connector
Nothing is connected to either.

> You should also have inputs for RCA composite and SVideo Y/C,
> which don't need to be tuned.

Here using only the RCA connector.

Unless a new idea surfaces this morning, I'll buy another card in the 
afternoon and find whether the display is different with that.

Thanks for the help,          ... Peter E. 
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#178666

*	From: peter@easthope.ca<
*	Date: Fri, 10 Mar 2017 07:38:25 -0800
> Unless a new idea surfaces this morning, I'll buy another card in the 
> afternoon and find whether the display is different with that.

Same window content from a 2nd Hauppauge card and I replaced the first 
card.

The device file dialogues to open the stream aren't reasonable. The 
default device in VLC is /dev/dvb/video0 but /dev/dvb doesn't exist.  
It must be a default compiled in or from a configuration file.
  
VLC and Test Bench show /dev/v4l/by-path/ as empty whereas it contains 
four files.  In a terminal, copied "pci-0000:02:0d0-video-index1" to 
the clipboard, selected /dev/v4l/by-path/ in the dialogue and pasted 
the file name "pci-00 ...".  The "Open" button was inactive but 
"Enter" opened the device.  Test Bench then gave a plausible image 
from the camera.  One problem solved.  

Didn't get the media selection in VLC to work yet but the effort with 
Test Bench should help.  I left it there and will resume next week.  
When we have a reasonable image from the microscope, will post another 
report.

Any ideas about the faulty device dialogue.  A dependancy not 
respected?

Thanks again,          ... Peter E. 
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#179171 — JVC camera and Hauppauge PVR-150 framegrabber. Was: Re: MTI camera ...

With a manual setting of the device path and ID, the V4L2 Test Bench 
produced this image from the JVC camera on the microscope.  
http://easthope.ca/JVCtoPVR150screen.jpg

Setting the device in the Test Bench each time it is opened becomes 
tedious and no /etc/*v4l* exists.  Can the default conifiguration be 
adjusted permanently without recompiling?  How?

Although too dark, the image from the microscope slide is faintly 
visible. The upper half of the image is on the bottom of the screen 
and the lower half is at the top.  On a VCR I might try adjusting 
vertical sync.  Is there an equilent in the Test Bench?

Thanks,                                       ... Peter E.

 
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#179196 — Re: JVC camera and Hauppauge PVR-150 framegrabber. Was: Re: MTI camera ...

On Wed, Mar 22, 2017 at 05:35:43PM -0700, peter@easthope.ca wrote:
> With a manual setting of the device path and ID, the V4L2 Test Bench 
> produced this image from the JVC camera on the microscope.  
> http://easthope.ca/JVCtoPVR150screen.jpg
> 
> Setting the device in the Test Bench each time it is opened becomes 
> tedious and no /etc/*v4l* exists.  Can the default conifiguration be 
> adjusted permanently without recompiling?  How?
> 
> Although too dark, the image from the microscope slide is faintly 
> visible. The upper half of the image is on the bottom of the screen 
> and the lower half is at the top.  On a VCR I might try adjusting 
> vertical sync.  Is there an equilent in the Test Bench?

The linux-media list at majordomo@vger.kernel.org might be your
best resource, here.

-dsr-

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