Re: [Emc-users] OT: Convert CRT to LCD

[Gene Heskett]

On Tuesday 22 September 2015 10:36:03 Rick Lair wrote:

> Attached is a copy of the pinout, the connector is in the red box
> pertaining to the crt.
>
> Rick
>
> On 9/22/2015 10:23 AM, Leonardo Marsaglia wrote:
> > 2015-09-22 11:19 GMT-03:00 Rick Lair :
> >> Would something along these lines work?
> >>
> >>
> >> http://www.ebay.com/itm/Brand-NEW-MDA-RGB-CGA-EGA-to-VGA-industrial
> >>-Converter-/250851103017?hash=item3a67e41129
> >
> > I guess that board woul work ok since it looks a lot better than
> > mine. If you have the CGA frequencies you should have no problems.
> >
> > Mine was the same as this:
> >
> > http://www.ebay.com/itm/NEW-Arcade-game-RGB-CGA-EGA-YUV-to-VGA-HD-vi
> >deo-converter-board-HD9800-GBS8200-/170860805754?hash=item27c818fe7a

There was a link from that to another one at $19, free ship.  It should 
do the job.


It should do the job.

Cheers, Gene Heskett
-- 
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 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
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Re: [Emc-users] OT: Convert CRT to LCD

[Gregg Eshelman]

On 9/22/2015 7:42 AM, Rick Lair wrote:
> Hello Guys,
>
> This is off topic for sure, but knew of no better place to ask with all
> the electronics knowledge floating around here.
>
> On our big vertical lathe, it has an old 9" CRT that is starting to give
> us troubles, and I would like to convert it to an LCD, the only problem
> is, that I am having a hard time figuring out the signaling going to the
> new monitor. It is a Fanuc control, so it has a Honda 20 pin male
> connector going to the CRT unit, which I scavenged up the diagram for
> the pin-out. I have 20 pin female connectors here already, so I can make
> a patch cable to VGA to connect it to the new monitor, but the signals
> are different from one to another. The current CRT has Hsync, Vsync, and
> a single wire Video signal, along with three 0V wires in the harness,
> and on a separate connector, the power for the monitor. But a standard
> VGA has Red, Green, Blue, then Hsync, and Vsync, and a few GRD connections.
>
> Maybe I need a signal converter, I have found quite a few of them on
> eBay, or can I just make up a cable and run with it?

Those old monochrome monitors would be some variety of digital TTL 
signaling instead of the analog signaling VGA used.

I'd bet it's not the same as the TTL method IBM used on their old mono 
monitors.


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[Emc-users] OT: Convert CRT to LCD

[Rick Lair]

Hello Guys,

This is off topic for sure, but knew of no better place to ask with all 
the electronics knowledge floating around here.

On our big vertical lathe, it has an old 9" CRT that is starting to give 
us troubles, and I would like to convert it to an LCD, the only problem 
is, that I am having a hard time figuring out the signaling going to the 
new monitor. It is a Fanuc control, so it has a Honda 20 pin male 
connector going to the CRT unit, which I scavenged up the diagram for 
the pin-out. I have 20 pin female connectors here already, so I can make 
a patch cable to VGA to connect it to the new monitor, but the signals 
are different from one to another. The current CRT has Hsync, Vsync, and 
a single wire Video signal, along with three 0V wires in the harness, 
and on a separate connector, the power for the monitor. But a standard 
VGA has Red, Green, Blue, then Hsync, and Vsync, and a few GRD connections.

Maybe I need a signal converter, I have found quite a few of them on 
eBay, or can I just make up a cable and run with it?

-- 

Thanks


Rick Lair
Superior Roll & Turning LLC
399 East Center Street
Petersburg MI, 49270
PH: 734-279-1831
FAX: 734-279-1166
www.superiorroll.com


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Re: [Emc-users] OT: Convert CRT to LCD

[Leonardo Marsaglia]

2015-09-22 11:19 GMT-03:00 Rick Lair :

> Would something along these lines work?
>
>
> http://www.ebay.com/itm/Brand-NEW-MDA-RGB-CGA-EGA-to-VGA-industrial-Converter-/250851103017?hash=item3a67e41129
>

I guess that board woul work ok since it looks a lot better than mine. If
you have the CGA frequencies you should have no problems.

Mine was the same as this:

http://www.ebay.com/itm/NEW-Arcade-game-RGB-CGA-EGA-YUV-to-VGA-HD-video-converter-board-HD9800-GBS8200-/170860805754?hash=item27c818fe7a


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Re: [Emc-users] OT: Convert CRT to LCD

[Gene Heskett]

On Tuesday 22 September 2015 10:27:51 Rick Lair wrote:

> Looking at the one print I found for my machine, it looks like Hsync
> 15.87 Khz, and Vsync 54.39 Khz,

I suspect you meant 54.38 Hz.  That would be within the reach of an NTSC 
monitor. Unfortunately those are limited to those tv's with inputs for 
old DVD's and VCR's, neither of which is near sharp enough to do what 
you want.  That would imply a dot frequency in the 15 megahertz region, 
and a GBS8200 video adapter, about 35-40 bucks that the game console 
folks use so they can replace the failing CRT's in the coin-op game 
consoles with modern but vga only LCD monitors.  The inputs on that are 
such that the worst adaptation you might have to do is invert the sync.  
Almost any TTL inverter can handle that.  I don't know how that board 
might react to the 5 Hertz diff in vsync frequency though as the only 
place I have used one is on my Color Computer 3, whose sync was not 100% 
NTSC compatible. Non-interlaced IOW.
>
> Rick
>
> On 9/22/2015 10:23 AM, Leonardo Marsaglia wrote:
> > 2015-09-22 11:19 GMT-03:00 Rick Lair :
> >> Would something along these lines work?
> >>
> >>
> >> http://www.ebay.com/itm/Brand-NEW-MDA-RGB-CGA-EGA-to-VGA-industrial
> >>-Converter-/250851103017?hash=item3a67e41129
> >
> > I guess that board woul work ok since it looks a lot better than
> > mine. If you have the CGA frequencies you should have no problems.
> >
> > Mine was the same as this:
> >
> > http://www.ebay.com/itm/NEW-Arcade-game-RGB-CGA-EGA-YUV-to-VGA-HD-vi
> >deo-converter-board-HD9800-GBS8200-/170860805754?hash=item27c818fe7a


Cheers, Gene Heskett
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page 

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Re: [Emc-users] OT: Convert CRT to LCD

[Leonardo Marsaglia]

Also note that VGA works with analog voltages for the RGB and the CRT on
your lathe sure has TTL for the video signal so it wouldn't work without
and adapter board.

2015-09-22 10:56 GMT-03:00 Leonardo Marsaglia :

> Hello Rick.
>
> Sounds like it has the same signals as our Mazak. Probably the working
> frequencies are the same as the CGA old monitors. In our case we replaced
> the old CRT with an old CGA monitor and connected the video signal to one
> of the colors.
>
> But in your case I guess the best would be to get an adapter card from CGA
> to VGA. If you have a scope the best you can do is to measure the frequency
> of both vertical and horizontal and you can be sure that you have the CGA
> values.
>
> Be careful with the adapter boards because I bought one that had problems
> with the input on the CGA port so It wouldn't work. Finally a really nice
> guy named Roy wich I can't remember his website sent to me a board that he
> manufactured for US 45 and worked fine, really well made I have to say. We
> are not using it at the moment because the CRT monitor that we installed is
> working ok but in case of a failure we have the board for replacement.
>
>
> 2015-09-22 10:42 GMT-03:00 Rick Lair :
>
>> Hello Guys,
>>
>> This is off topic for sure, but knew of no better place to ask with all
>> the electronics knowledge floating around here.
>>
>> On our big vertical lathe, it has an old 9" CRT that is starting to give
>> us troubles, and I would like to convert it to an LCD, the only problem
>> is, that I am having a hard time figuring out the signaling going to the
>> new monitor. It is a Fanuc control, so it has a Honda 20 pin male
>> connector going to the CRT unit, which I scavenged up the diagram for
>> the pin-out. I have 20 pin female connectors here already, so I can make
>> a patch cable to VGA to connect it to the new monitor, but the signals
>> are different from one to another. The current CRT has Hsync, Vsync, and
>> a single wire Video signal, along with three 0V wires in the harness,
>> and on a separate connector, the power for the monitor. But a standard
>> VGA has Red, Green, Blue, then Hsync, and Vsync, and a few GRD
>> connections.
>>
>> Maybe I need a signal converter, I have found quite a few of them on
>> eBay, or can I just make up a cable and run with it?
>>
>> --
>>
>> Thanks
>>
>>
>> Rick Lair
>> Superior Roll & Turning LLC
>> 399 East Center Street
>> Petersburg MI, 49270
>> PH: 734-279-1831
>> FAX: 734-279-1166
>> www.superiorroll.com
>>
>>
>>
>> --
>> ___
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>> https://lists.sourceforge.net/lists/listinfo/emc-users
>>
>
>
>
> --
> *Leonardo Marsaglia*.
>



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Re: [Emc-users] OT: Convert CRT to LCD

[Lester Caine]

On 22/09/15 15:27, Rick Lair wrote:
> Looking at the one print I found for my machine, it looks like Hsync 
> 15.87 Khz, and Vsync 54.39 Khz,

Hopefully Vsync is 54Hz ... needs to be substantially less than HSync.
The quick trick used to be hooking up the H and V to the VGA monitor,
and then simply wiring R, G and B together to give you a 'white' signal,
but modern monitors tend to be a little less forgiving with lower
frequency signals, but it should lock at 15.87KHz so I'd just give it a go.

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Re: [Emc-users] OT: Convert CRT to LCD

[Leonardo Marsaglia]

Hello Rick.

Sounds like it has the same signals as our Mazak. Probably the working
frequencies are the same as the CGA old monitors. In our case we replaced
the old CRT with an old CGA monitor and connected the video signal to one
of the colors.

But in your case I guess the best would be to get an adapter card from CGA
to VGA. If you have a scope the best you can do is to measure the frequency
of both vertical and horizontal and you can be sure that you have the CGA
values.

Be careful with the adapter boards because I bought one that had problems
with the input on the CGA port so It wouldn't work. Finally a really nice
guy named Roy wich I can't remember his website sent to me a board that he
manufactured for US 45 and worked fine, really well made I have to say. We
are not using it at the moment because the CRT monitor that we installed is
working ok but in case of a failure we have the board for replacement.


2015-09-22 10:42 GMT-03:00 Rick Lair :

> Hello Guys,
>
> This is off topic for sure, but knew of no better place to ask with all
> the electronics knowledge floating around here.
>
> On our big vertical lathe, it has an old 9" CRT that is starting to give
> us troubles, and I would like to convert it to an LCD, the only problem
> is, that I am having a hard time figuring out the signaling going to the
> new monitor. It is a Fanuc control, so it has a Honda 20 pin male
> connector going to the CRT unit, which I scavenged up the diagram for
> the pin-out. I have 20 pin female connectors here already, so I can make
> a patch cable to VGA to connect it to the new monitor, but the signals
> are different from one to another. The current CRT has Hsync, Vsync, and
> a single wire Video signal, along with three 0V wires in the harness,
> and on a separate connector, the power for the monitor. But a standard
> VGA has Red, Green, Blue, then Hsync, and Vsync, and a few GRD connections.
>
> Maybe I need a signal converter, I have found quite a few of them on
> eBay, or can I just make up a cable and run with it?
>
> --
>
> Thanks
>
>
> Rick Lair
> Superior Roll & Turning LLC
> 399 East Center Street
> Petersburg MI, 49270
> PH: 734-279-1831
> FAX: 734-279-1166
> www.superiorroll.com
>
>
>
> --
> ___
> Emc-users mailing list
> Emc-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/emc-users
>



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Re: [Emc-users] OT: Convert CRT to LCD

[Rick Lair]

Would something along these lines work?

http://www.ebay.com/itm/Brand-NEW-MDA-RGB-CGA-EGA-to-VGA-industrial-Converter-/250851103017?hash=item3a67e41129

On 9/22/2015 10:00 AM, Leonardo Marsaglia wrote:
> Also note that VGA works with analog voltages for the RGB and the CRT on
> your lathe sure has TTL for the video signal so it wouldn't work without
> and adapter board.
>
> 2015-09-22 10:56 GMT-03:00 Leonardo Marsaglia > :
>> Hello Rick.
>>
>> Sounds like it has the same signals as our Mazak. Probably the working
>> frequencies are the same as the CGA old monitors. In our case we replaced
>> the old CRT with an old CGA monitor and connected the video signal to one
>> of the colors.
>>
>> But in your case I guess the best would be to get an adapter card from CGA
>> to VGA. If you have a scope the best you can do is to measure the frequency
>> of both vertical and horizontal and you can be sure that you have the CGA
>> values.
>>
>> Be careful with the adapter boards because I bought one that had problems
>> with the input on the CGA port so It wouldn't work. Finally a really nice
>> guy named Roy wich I can't remember his website sent to me a board that he
>> manufactured for US 45 and worked fine, really well made I have to say. We
>> are not using it at the moment because the CRT monitor that we installed is
>> working ok but in case of a failure we have the board for replacement.
>>
>>
>> 2015-09-22 10:42 GMT-03:00 Rick Lair :
>>
>>> Hello Guys,
>>>
>>> This is off topic for sure, but knew of no better place to ask with all
>>> the electronics knowledge floating around here.
>>>
>>> On our big vertical lathe, it has an old 9" CRT that is starting to give
>>> us troubles, and I would like to convert it to an LCD, the only problem
>>> is, that I am having a hard time figuring out the signaling going to the
>>> new monitor. It is a Fanuc control, so it has a Honda 20 pin male
>>> connector going to the CRT unit, which I scavenged up the diagram for
>>> the pin-out. I have 20 pin female connectors here already, so I can make
>>> a patch cable to VGA to connect it to the new monitor, but the signals
>>> are different from one to another. The current CRT has Hsync, Vsync, and
>>> a single wire Video signal, along with three 0V wires in the harness,
>>> and on a separate connector, the power for the monitor. But a standard
>>> VGA has Red, Green, Blue, then Hsync, and Vsync, and a few GRD
>>> connections.
>>>
>>> Maybe I need a signal converter, I have found quite a few of them on
>>> eBay, or can I just make up a cable and run with it?
>>>
>>> --
>>>
>>> Thanks
>>>
>>>
>>> Rick Lair
>>> Superior Roll & Turning LLC
>>> 399 East Center Street
>>> Petersburg MI, 49270
>>> PH: 734-279-1831
>>> FAX: 734-279-1166
>>> www.superiorroll.com
>>>
>>>
>>>
>>> --
>>> ___
>>> Emc-users mailing list
>>> Emc-users@lists.sourceforge.net
>>> https://lists.sourceforge.net/lists/listinfo/emc-users
>>>
>>
>>
>> --
>> *Leonardo Marsaglia*.
>>
>
>

-- 

Thanks


Rick Lair
Superior Roll & Turning LLC
399 East Center Street
Petersburg MI, 49270
PH: 734-279-1831
FAX: 734-279-1166
www.superiorroll.com


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Re: [Emc-users] OT: Convert CRT to LCD

[Rick Lair]

Looking at the one print I found for my machine, it looks like Hsync 
15.87 Khz, and Vsync 54.39 Khz,


Rick

On 9/22/2015 10:23 AM, Leonardo Marsaglia wrote:
> 2015-09-22 11:19 GMT-03:00 Rick Lair :
>
>> Would something along these lines work?
>>
>>
>> http://www.ebay.com/itm/Brand-NEW-MDA-RGB-CGA-EGA-to-VGA-industrial-Converter-/250851103017?hash=item3a67e41129
>>
> I guess that board woul work ok since it looks a lot better than mine. If
> you have the CGA frequencies you should have no problems.
>
> Mine was the same as this:
>
> http://www.ebay.com/itm/NEW-Arcade-game-RGB-CGA-EGA-YUV-to-VGA-HD-video-converter-board-HD9800-GBS8200-/170860805754?hash=item27c818fe7a
>
>

-- 

Thanks


Rick Lair
Superior Roll & Turning LLC
399 East Center Street
Petersburg MI, 49270
PH: 734-279-1831
FAX: 734-279-1166
www.superiorroll.com


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Re: [Emc-users] OT: Convert CRT to LCD

[Gene Heskett]

On Tuesday 22 September 2015 09:42:51 Rick Lair wrote:

> Hello Guys,
>
> This is off topic for sure, but knew of no better place to ask with
> all the electronics knowledge floating around here.
>
> On our big vertical lathe, it has an old 9" CRT that is starting to
> give us troubles, and I would like to convert it to an LCD, the only
> problem is, that I am having a hard time figuring out the signaling
> going to the new monitor. It is a Fanuc control, so it has a Honda 20
> pin male connector going to the CRT unit, which I scavenged up the
> diagram for the pin-out. I have 20 pin female connectors here already,
> so I can make a patch cable to VGA to connect it to the new monitor,
> but the signals are different from one to another. The current CRT has
> Hsync, Vsync, and a single wire Video signal, along with three 0V
> wires in the harness, and on a separate connector, the power for the
> monitor. But a standard VGA has Red, Green, Blue, then Hsync, and
> Vsync, and a few GRD connections.
>
> Maybe I need a signal converter, I have found quite a few of them on
> eBay, or can I just make up a cable and run with it?

Those 0 volt wires are more than likely shielding returns to be grounded 
and could likely be combined at the grounded terminal of the db15, so 
you could probably knock out a merging pcb on the mill in half an hour 
or so. The 9" I have to assume was black & white?  That, in todays all 
color lcd's might have to be buffered with a gain control and 
resistively fed to all 3 colors on the vga cable.  See the TI opamp 
selections for the buffer as they have a good selection of video speed 
opamps that can run on a single 5 volt supply, for something in the sub 
$2 price.  I used several of them as replacements for a custom circuit 
in a GVG video switcher that the Grass Valley Group wanted $1500 a copy 
for, and they were actually faster than theirs was.  15 Years ago, so 
the stuff is available.  I'd quote the Jedec number but have forgotten 
it.

You want a single 5volt supply unit with a gain/bandwidth product of a 
about a gigahertz for that.

Cheers, Gene Heskett
-- 
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 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page 

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Re: [Emc-users] OT: Convert CRT to LCD

[Rick Lair]

Yep 54 hz, not khz, very poor writing on the print that denotes that.



On 9/22/2015 10:51 AM, Gene Heskett wrote:
> On Tuesday 22 September 2015 10:27:51 Rick Lair wrote:
>
>> Looking at the one print I found for my machine, it looks like Hsync
>> 15.87 Khz, and Vsync 54.39 Khz,
> I suspect you meant 54.38 Hz.  That would be within the reach of an NTSC
> monitor. Unfortunately those are limited to those tv's with inputs for
> old DVD's and VCR's, neither of which is near sharp enough to do what
> you want.  That would imply a dot frequency in the 15 megahertz region,
> and a GBS8200 video adapter, about 35-40 bucks that the game console
> folks use so they can replace the failing CRT's in the coin-op game
> consoles with modern but vga only LCD monitors.  The inputs on that are
> such that the worst adaptation you might have to do is invert the sync.
> Almost any TTL inverter can handle that.  I don't know how that board
> might react to the 5 Hertz diff in vsync frequency though as the only
> place I have used one is on my Color Computer 3, whose sync was not 100%
> NTSC compatible. Non-interlaced IOW.
>> Rick
>>
>> On 9/22/2015 10:23 AM, Leonardo Marsaglia wrote:
>>> 2015-09-22 11:19 GMT-03:00 Rick Lair :
 Would something along these lines work?


 http://www.ebay.com/itm/Brand-NEW-MDA-RGB-CGA-EGA-to-VGA-industrial
 -Converter-/250851103017?hash=item3a67e41129
>>> I guess that board woul work ok since it looks a lot better than
>>> mine. If you have the CGA frequencies you should have no problems.
>>>
>>> Mine was the same as this:
>>>
>>> http://www.ebay.com/itm/NEW-Arcade-game-RGB-CGA-EGA-YUV-to-VGA-HD-vi
>>> deo-converter-board-HD9800-GBS8200-/170860805754?hash=item27c818fe7a
>
> Cheers, Gene Heskett

-- 

Thanks


Rick Lair
Superior Roll & Turning LLC
399 East Center Street
Petersburg MI, 49270
PH: 734-279-1831
FAX: 734-279-1166
www.superiorroll.com


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