HI !!!
I am working with board DM642 EVM (v3). My VGA output doesn't work, and i
don't know why. I don't have another board to compare if it is
hardware or software problem. So i have question to You.
My monitor when is connected to board behaves like unconnected. I mean there is
displayed picture which means it is unconnected.
My question is : if you connect monitor to vga output of board which is reseted,
without any program loaded, monitor behave like connected or not.
That information would help me a lot.
regards
Flash
_____________________________________
DM642 VGA output
Started by ●May 28, 2009
Reply by ●May 29, 20092009-05-29
Hi,
First thing you can do is that monitor sync signals Hsync,Vsync on VGA port
if they are not present then monitor will not show as connected.
It will be better to check all VGA signals and compare them with standard.
Regards,
Ruturaj.
----- Original Message -----
From: flash7gold
To: c...
Sent: Friday, May 29, 2009 1:14 AM
Subject: [c6x] DM642 VGA output
HI !!!
I am working with board DM642 EVM (v3). My VGA output doesn't work, and i don't know why. I don't have another board to compare if it is hardware or software problem. So i have question to You.
My monitor when is connected to board behaves like unconnected. I mean there is displayed picture which means it is unconnected.
My question is : if you connect monitor to vga output of board which is reseted, without any program loaded, monitor behave like connected or not.
That information would help me a lot.
regards
Flash
_____________________________________
First thing you can do is that monitor sync signals Hsync,Vsync on VGA port
if they are not present then monitor will not show as connected.
It will be better to check all VGA signals and compare them with standard.
Regards,
Ruturaj.
----- Original Message -----
From: flash7gold
To: c...
Sent: Friday, May 29, 2009 1:14 AM
Subject: [c6x] DM642 VGA output
HI !!!
I am working with board DM642 EVM (v3). My VGA output doesn't work, and i don't know why. I don't have another board to compare if it is hardware or software problem. So i have question to You.
My monitor when is connected to board behaves like unconnected. I mean there is displayed picture which means it is unconnected.
My question is : if you connect monitor to vga output of board which is reseted, without any program loaded, monitor behave like connected or not.
That information would help me a lot.
regards
Flash
_____________________________________
Reply by ●June 2, 20092009-06-02
I get "sync. out of range" displayed on the monitor.
Hanief
--- In c..., "flash7gold" wrote:
>
> HI !!!
> I am working with board DM642 EVM (v3). My VGA output doesn't work, and i don't know why. I don't have another board to compare if it is hardware or software problem. So i have question to You.
>
> My monitor when is connected to board behaves like unconnected. I mean there is displayed picture which means it is unconnected.
> My question is : if you connect monitor to vga output of board which is reseted, without any program loaded, monitor behave like connected or not.
>
> That information would help me a lot.
>
> regards
>
> Flash
_____________________________________
Hanief
--- In c..., "flash7gold" wrote:
>
> HI !!!
> I am working with board DM642 EVM (v3). My VGA output doesn't work, and i don't know why. I don't have another board to compare if it is hardware or software problem. So i have question to You.
>
> My monitor when is connected to board behaves like unconnected. I mean there is displayed picture which means it is unconnected.
> My question is : if you connect monitor to vga output of board which is reseted, without any program loaded, monitor behave like connected or not.
>
> That information would help me a lot.
>
> regards
>
> Flash
_____________________________________
Reply by ●June 2, 20092009-06-02
Hanief,
Is the horizontal or vertical sync out of range?
In any case, an oscilloscope will let your know the current timing (sync is
timing) values.
You can then adjust the video output parameters to correct the values to
something the monitor can recognize.
*I* would start by setting the vertical sync pulse rate.
For most monitors, the vertical sync pulse rate is 50 or 60 hertz.
(for a composite video signal, the vertical sync pulse is the long period of
full 'blanking' signal level)
R. Williams
---------- Original Message -----------
From: "H"
To: c...
Sent: Tue, 02 Jun 2009 03:41:25 -0000
Subject: [c6x] Re: DM642 VGA output
> I get "sync. out of range" displayed on the monitor.
> Hanief
>
> --- In c..., "flash7gold" wrote:
> >
> > HI !!!
> > I am working with board DM642 EVM (v3). My VGA output doesn't work, and i
don't know why. I don't have another board to compare if it is hardware or
software problem. So i have question to You.
> >
> > My monitor when is connected to board behaves like unconnected. I mean there
is displayed picture which means it is unconnected.
> > My question is : if you connect monitor to vga output of board which is
reseted, without any program loaded, monitor behave like connected or not.
> >
> > That information would help me a lot.
> >
> > regards
> >
> > Flash
------- End of Original Message -------
_____________________________________
Is the horizontal or vertical sync out of range?
In any case, an oscilloscope will let your know the current timing (sync is
timing) values.
You can then adjust the video output parameters to correct the values to
something the monitor can recognize.
*I* would start by setting the vertical sync pulse rate.
For most monitors, the vertical sync pulse rate is 50 or 60 hertz.
(for a composite video signal, the vertical sync pulse is the long period of
full 'blanking' signal level)
R. Williams
---------- Original Message -----------
From: "H"
To: c...
Sent: Tue, 02 Jun 2009 03:41:25 -0000
Subject: [c6x] Re: DM642 VGA output
> I get "sync. out of range" displayed on the monitor.
> Hanief
>
> --- In c..., "flash7gold" wrote:
> >
> > HI !!!
> > I am working with board DM642 EVM (v3). My VGA output doesn't work, and i
don't know why. I don't have another board to compare if it is hardware or
software problem. So i have question to You.
> >
> > My monitor when is connected to board behaves like unconnected. I mean there
is displayed picture which means it is unconnected.
> > My question is : if you connect monitor to vga output of board which is
reseted, without any program loaded, monitor behave like connected or not.
> >
> > That information would help me a lot.
> >
> > regards
> >
> > Flash
------- End of Original Message -------
_____________________________________
Reply by ●June 8, 20092009-06-08
Hi R. Williams,
I was just answering Flash's question. But I suppose your answer would help him.
Cheers,
Hanief
--- In c..., "Richard Williams" wrote:
>
> Hanief,
>
> Is the horizontal or vertical sync out of range?
>
> In any case, an oscilloscope will let your know the current timing (sync is
> timing) values.
> You can then adjust the video output parameters to correct the values to
> something the monitor can recognize.
> *I* would start by setting the vertical sync pulse rate.
> For most monitors, the vertical sync pulse rate is 50 or 60 hertz.
> (for a composite video signal, the vertical sync pulse is the long period of
> full 'blanking' signal level)
>
> R. Williams
>
> ---------- Original Message -----------
> From: "H"
> To: c...
> Sent: Tue, 02 Jun 2009 03:41:25 -0000
> Subject: [c6x] Re: DM642 VGA output
>
> > I get "sync. out of range" displayed on the monitor.
> > Hanief
> >
> > --- In c..., "flash7gold" wrote:
> > >
> > > HI !!!
> > > I am working with board DM642 EVM (v3). My VGA output doesn't work, and i
> don't know why. I don't have another board to compare if it is hardware or
> software problem. So i have question to You.
> > >
> > > My monitor when is connected to board behaves like unconnected. I mean there
> is displayed picture which means it is unconnected.
> > > My question is : if you connect monitor to vga output of board which is
> reseted, without any program loaded, monitor behave like connected or not.
> > >
> > > That information would help me a lot.
> > >
> > > regards
> > >
> > > Flash
> ------- End of Original Message -------
_____________________________________
I was just answering Flash's question. But I suppose your answer would help him.
Cheers,
Hanief
--- In c..., "Richard Williams" wrote:
>
> Hanief,
>
> Is the horizontal or vertical sync out of range?
>
> In any case, an oscilloscope will let your know the current timing (sync is
> timing) values.
> You can then adjust the video output parameters to correct the values to
> something the monitor can recognize.
> *I* would start by setting the vertical sync pulse rate.
> For most monitors, the vertical sync pulse rate is 50 or 60 hertz.
> (for a composite video signal, the vertical sync pulse is the long period of
> full 'blanking' signal level)
>
> R. Williams
>
> ---------- Original Message -----------
> From: "H"
> To: c...
> Sent: Tue, 02 Jun 2009 03:41:25 -0000
> Subject: [c6x] Re: DM642 VGA output
>
> > I get "sync. out of range" displayed on the monitor.
> > Hanief
> >
> > --- In c..., "flash7gold" wrote:
> > >
> > > HI !!!
> > > I am working with board DM642 EVM (v3). My VGA output doesn't work, and i
> don't know why. I don't have another board to compare if it is hardware or
> software problem. So i have question to You.
> > >
> > > My monitor when is connected to board behaves like unconnected. I mean there
> is displayed picture which means it is unconnected.
> > > My question is : if you connect monitor to vga output of board which is
> reseted, without any program loaded, monitor behave like connected or not.
> > >
> > > That information would help me a lot.
> > >
> > > regards
> > >
> > > Flash
> ------- End of Original Message -------
_____________________________________
