monitor extension cable question

R

RB

Guest
I notice lots of monitor extension cables are available.

Presumably the ones having the HD-15 plugs have the same wire bundle
configuration (same numbers and colors of wires inside the cable) as that in
the monitor video cable itself. Is this correct?

If that is correct, then it follows that the pinouts of the monitor video
cable plug and that of the extender would be the same. Is this also
correct?
 
A standard monitor extension made for the job will work. But, if you use an
extension, you will loose some resolution due to the added return loss in
the cable.

--

Greetings,

Jerry Greenberg GLG Technologies GLG
=========================================
WebPage http://www.zoom-one.com
Electronics http://www.zoom-one.com/electron.htm
=========================================


"RB" <rbig@bellsouth.nospam.net> wrote in message
news:JAJyb.10468$5d.3697@bignews4.bellsouth.net...
I notice lots of monitor extension cables are available.

Presumably the ones having the HD-15 plugs have the same wire bundle
configuration (same numbers and colors of wires inside the cable) as that in
the monitor video cable itself. Is this correct?

If that is correct, then it follows that the pinouts of the monitor video
cable plug and that of the extender would be the same. Is this also
correct?
 
What I'm interested in doing is cutting one end off the extension and then
splicing it to the end of my monitor cable (the plug on it was cut off by
vandals, and no one in our area seems to be able to put a new plug on it).
I figure if the monitor and extension cable match up, I can just cut the end
off the extension cable and splice it to the wires in the monitor cable.
 
RB wrote:
What I'm interested in doing is cutting one end off the extension and then
splicing it to the end of my monitor cable (the plug on it was cut off by
vandals, and no one in our area seems to be able to put a new plug on it).
I figure if the monitor and extension cable match up, I can just cut the end
off the extension cable and splice it to the wires in the monitor cable.
Click to expand...
There's quite a difference between different cables.
Good ones are coax. Bad ones are twisted pair.
You can splice coax, but take care to minimize the impedance bump.
Keep the cable as short as you can.
There are 13 or so connections in the cable. The colors probably won't
match. Consider how you're gonna tell which wire goes where before
you cut up a perfectly good cable.

If you can splice coax, you can probably cobble a connector on the end
of the existing wire. Once you get it working, pot the end in hot-melt
glue for mechanical strength.

If you're gonna be pluging/unplugging/stressing the plug end, it might
be better to splice it inside the monitor box, but that requires more
skill/knowledge.

mike

--
Bunch of stuff For Sale and Wanted at the link below.
laptops and parts Test Equipment
Honda CB-125S
TEK Sampling Sweep Plugin and RM564
Tek 2465 $800, ham radio, 30pS pulser
Tektronix Concept Books, spot welding head...
http://www.geocities.com/SiliconValley/Monitor/4710/
 
}}} Consider how you're gonna tell which wire goes where before
you cut up a perfectly good cable. {{{

Wise words. What I'm going to have to do is use one of the "standard" HD 15
plug pinouts I've found several places online to get the colors of the plug
end of my cable that's in the monitor, and hope it's the same scheme that
Gateway uses.

Nothing to lose, really, as the monitor is so much junk without a plug on
the cable, and no one locally will talk to me about it. This way, I've at
least got a shot at it.
 
you will need the cut off plug to find which color wire goes to what
pin..or..
you have to go inside and determine this

there are three coax for red green and blue pins 1,2,3 - (6,7,8 ground
shields)
horiz sync 13
vert sync 14
pins 4 and 11 are ground

then there are variables, depending on how sophisticated your monitor is
pin 5 - cpu sense
pin 12 DDC data
pin 15 DDC clock
pin 10 ground but i have GND-SYNC/SELF RASTER for it so maybe it can be
more than a simple ground, sometimes

these last pins are used for late models that comunicate with the machine

colors of wires are not universal
 
It is a very tricky job soldering a 15pin vga connector. what area do you
live. Any real Audio Visual repair shop will fix that.



"RB" <rbig@bellsouth.nospam.net> wrote in message
news:4dSyb.1091$Pw1.851@bignews3.bellsouth.net...
}}} Consider how you're gonna tell which wire goes where before
you cut up a perfectly good cable. {{{

Wise words. What I'm going to have to do is use one of the "standard" HD
15
plug pinouts I've found several places online to get the colors of the
plug
end of my cable that's in the monitor, and hope it's the same scheme that
Gateway uses.

Nothing to lose, really, as the monitor is so much junk without a plug on
the cable, and no one locally will talk to me about it. This way, I've at
least got a shot at it.
Click to expand...
 
<< It is a very tricky job soldering a 15pin vga connector. what area do you
live. Any real Audio Visual repair shop will fix that.
I did a few hundred of them while I had my cable business. Worse part was
when a customer would cut the end off his monitor cable and throw the plug
away. Like I am supposed to know what wire went where. Yes, there is no
standard color scheme. Even the coaxes inside the cable are not always red,
green and blue.

Raymond
 
Except for the 3 RGB coax video wires, the other wires may be different
in color than found on your monitor. You can purchase a standard 15 pin
high-density male connector at radio shack for less than $2.00
The pinout function are fairly standard. Search the web and you will
find them. Generally, pin 9 is omitted on most VGA cables.
Pins 1,2,3 are the RGB video signals with their respective ground returns
on pins 6,7 and 8. Horiz sync is on 13, vertical sync on 14.
Pins 12 and 15 are the plug & play lines. Pins 4,5,10,11 are grounds.
What brand and model of monitor do you have ?
I have written down some of the wire colors on ones I have fixed.
John


"RB" <rbig@bellsouth.nospam.net> wrote in message news:<JAJyb.10468$5d.3697@bignews4.bellsouth.net>...
I notice lots of monitor extension cables are available.

Presumably the ones having the HD-15 plugs have the same wire bundle
configuration (same numbers and colors of wires inside the cable) as that in
the monitor video cable itself. Is this correct?

If that is correct, then it follows that the pinouts of the monitor video
cable plug and that of the extender would be the same. Is this also
correct?
Click to expand...
 
Years ago, when I still had a 386 and Win3.x, I bought a switch box
that would switch to another monitor, switch the mouse and keyboard &
printer, and other stuff. To be perfectly honest, I am not sure why I
bought this thing, except that I had 2 computers and wanted to switch
from one to the other without changing cables. But with this box, my
picture on the monitor was horrible. The other functions such as
mouse & keybd and prn worked fine, but served no real purpose except
for the printer. I ended up using only the printer part of it and
eventually networked the two computers together instead.


On Mon, 1 Dec 2003 10:00:30 -0600, "RB" <rbig@bellsouth.nospam.net>
wrote:

I notice lots of monitor extension cables are available.

Presumably the ones having the HD-15 plugs have the same wire bundle
configuration (same numbers and colors of wires inside the cable) as that in
the monitor video cable itself. Is this correct?

If that is correct, then it follows that the pinouts of the monitor video
cable plug and that of the extender would be the same. Is this also
correct?
Click to expand...
 
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