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3 total messages Started by Nick Williams Fri, 28 Aug 1998 00:00
RGB Monitor - help needed
#595
Author: Nick Williams
Date: Fri, 28 Aug 1998 00:00
23 lines
1810 bytes
I've recently been give a Philips 19in RGB monitor which originally came
with a dedicated card for a PC system running AutoCAD. I'd like to get this
working on my PowerMac 7100, but I have an apparent incompatibility between
the video output of the Mac and the input to the monitor. 

The basic problem is that the monitor has only three BNC inputs (R, G and
B) and does not have a separate sync input. From what information I have
been able to glean in a web search, the monitor uses a combined sync on the
green input (I hope that makes sense - the relevant message was in German
which I don't speak!).

I've also been given a Supermac Nubus video card and cable, which has the
standard Mac DB15 connector on the card and a lead from the DB15 to four
BNC connectors. However without the sync. input, the 'picture' on the
screen is a meaningless jumble. 

Is the solution to this problem simply the creation of the correct adapter
cable (in which case, what is the configuration - I'm handy with a
soldering iron and I object to paying over the odds for cables I can make
myself) or do I actually need to invest in some more hardware and if so,
what am I looing for and where is the best place to get it?

Help would (obviously) be appreciated.  
Re: RGB Monitor - help needed
#600
Author: Rebecca and Rowland
Date: Tue, 01 Sep 1998 00:00
27 lines
1644 bytes
Nick Williams <nick@conformance.co.uk> wrote:

[snip]
> The basic problem is that the monitor has only three BNC inputs (R, G and
> B) and does not have a separate sync input. From what information I have
> been able to glean in a web search, the monitor uses a combined sync on the
> green input (I hope that makes sense - the relevant message was in German
> which I don't speak!).

I can't help at all with the problem, but...  Sync on green sounds right
to me.

[snip]

> Help would (obviously) be appreciated.  

I suspect there's a fairly straightforward solution.  A Web search might
turn something up, or you might try asking in uk.comp.sys.mac or
comp.sys.mac.hardware.something.

Rowland.

-- 
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Sorry - the spam got to me.                       PGP pub key A680B89D
UK biker?                    Join MAG and help keep bureaucracy at bay
                          http://dredd.meng.ucl.ac.uk/www/mag/mag.html
Re: RGB Monitor - help needed
#601
Author: Catherine Ferris
Date: Fri, 04 Sep 1998 00:00
50 lines
3015 bytes
Nick Williams <nick@conformance.co.uk> wrote:

> I've recently been give a Philips 19in RGB monitor which originally came
> with a dedicated card for a PC system running AutoCAD. I'd like to get this
> working on my PowerMac 7100, but I have an apparent incompatibility between
> the video output of the Mac and the input to the monitor. 
> 
> The basic problem is that the monitor has only three BNC inputs (R, G and
> B) and does not have a separate sync input. From what information I have
> been able to glean in a web search, the monitor uses a combined sync on the
> green input (I hope that makes sense - the relevant message was in German
> which I don't speak!).
> 
> I've also been given a Supermac Nubus video card and cable, which has the
> standard Mac DB15 connector on the card and a lead from the DB15 to four
> BNC connectors. However without the sync. input, the 'picture' on the
> screen is a meaningless jumble. 
> 
> Is the solution to this problem simply the creation of the correct adapter
> cable (in which case, what is the configuration - I'm handy with a
> soldering iron and I object to paying over the odds for cables I can make
> myself) or do I actually need to invest in some more hardware and if so,
> what am I looing for and where is the best place to get it?
> 
> Help would (obviously) be appreciated.  

Nick,

Do you have the PC to monitor cable that would have come with the
monitor. If you do you can purchase a simple adaptor that will convert
Mac DB15 to PC monitor connector and then throught the existing cable
onto the monitor.

I recently picked up an adaptor to just this job, costs around �18. The
particular adaptor I chose allows you to set the resolution handshaking
for the monitor and also set where the sync's go to via a set of DIP
switches. The adaptor can work with fifteen resoulations with six
difference sync options.

If the monitor is up to it you can drive it as a multi-sync monitor
controlled from the 'Monitors and Sound' control panel.

-- Kate

Catherine Ferris                kate@tycho.demon.co.uk
Director                        Tycho Consultants Limited

'This above all: to thine own self be true,
 And it must follow as the night the day
 Thou canst not then be false to any man.'   -- Hamlet
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