3W3 to VGA
Louis Ohland
cable?
Rick Ekblaw
> OK, time to quit funnin' me. Where can I get a 3W3 to VGA adapter or
> cable?
Never seen one (not likely to, either). What you need is a 3W3 to 3 BNC
cable, and a monitor with BNC inputs that accepts sync on green -- and o
f course also accepts the video mode(s) output by the adapter. For the
RS/6000 MCA adapters, a PowerDisplay 17 or 20 is a good choice, but a
9527 (17P) will usually do in a pinch. I always try to keep 3 or 4
operational BNC input monitors on hand, never know when one will need to
be called into service.
Rick Ekblaw
Louis Ohland
Why can't I go from a 5 BNC to a VGA plug? Roll your own, as it were...
William R. Walsh
> Uh, Rick, what LCD has BNC inputs?
CRT. Repeat after me...C-R-T. A good working CRT capable of sync-on-green
operation shouldn't be too hard to find. Secondhand monitors in good working
order generally go cheap. I had a NEC MultiSync 17 *given* to me, as well as
the 5-BNC Belkin cable. Seven years later I still have it, and it still
works great. It can accept 15-pin VGA, BNC (with sync-on-green IIRC) and
Macintosh 15 pin video.
I've never seen any flat panel display with BNC inputs.
> Why can't I go from a 5 BNC to a VGA plug? Roll your own, as it were...
The big issue seems to be the delivery of sync information. VGA monitors
expect distinct sync information for horizontal and vertical
synchronization. They have a set of pins for each. That said, you may well
find a VGA monitor that is perfectly happy to violate the standards and
receive sync-on-green via its 15-pin connector. You can certainly try to
build such an adapter...but finding a monitor that will accept it may be hit
or miss. The good news is that you (probably) can't blow anything up by
testing this.
It may be possible to build a device which would separate or regenerate the
sync signals out to distinct horizontal/vertical sync, but that's likely to
get expensive very quickly.
William
JWR
"Louis Ohland" <ohl...@charter.net> schreef in bericht
news:7VSoi.81$KZ...@newsfe12.lga...
> OK, time to quit funnin' me. Where can I get a 3W3 to VGA adapter or
> cable?
This is what I could scrounge on the net :
==QUOTE==
3w3:
----------------
/ o1 o2 o3 \
------------------
VGA:
----------------------------
\ o1 o2 o3 o4 o5 /
\ o6 o7 o8 o9 o10 /
\ o11 o12 o13 o14 o15 /
--------------------
3w3 Pin 1 inside -> VGA Pin 1 (red)
3w3 Pin 1 outside -> VGA Pin 6 (red gnd)
3w3 Pin 2 inside -> VGA Pin 2 (green)
3w3 Pin 2 outside -> VGA Pin 7 (green gnd)
3w3 Pin 3 inside -> VGA Pin 3 (blue)
3w3 Pin 3 outside -> VGA Pin 8 (blue gnd)
DEC's version of a 3W3 connector has the red and blue swapped from IBM's
version.
Just re-wire it to connect A1 on the 3W3 to 3 on the VGA connector, and A3
on the 3W3 to 1 on the VGA connector (and swap the coresponding ground
lines).
==UNQUOTE==
==QUOTE==
The cable you want is BN36-1F. It's got a male 3W3 connector on one side and
a female DB15 connector on the other and is a one meter cable.
You can then connect a regular DB15 VGA cable from that end to your monitor.
Like JF says, your monitor still needs to support Sync-on-Green.
I bought this cable from Great Lakes Computer and use it to connect a DEC
3000/900 to an LCD monitor.
==UNQUOTE==
Especially the last bit looks good if you don't want to DIY, go to
www.glcomp.com and search for "BN36"
What comes up though in every thread I see, is you *really* need a monitor
that supports Sync-on-Green.
--
Jelte, admirer of the letter of IBM with blue Ishiki
The information contained in this post is copyright the poster
and specifically may not be published in, or used by
http://www.jlaforums.com
Tim Knight/CT
>
> What comes up though in every thread I see, is you *really* need a monitor
> that supports Sync-on-Green.
>
> --
> Jelte, admirer of the letter of IBM with blue Ishiki
> The information contained in this post is copyright the poster
> and specifically may not be published in, or used by
> http://www.jlaforums.com
As I remember, when I got my 320 from Seattle, the guy who sold it to
me had a 3W3 to VGA cable made up for me and I think I sent it to
Basil in OZ with Gargantua........
Basil, am I right on this?
CT
RickE
> Uh, Rick, what LCD has BNC inputs?
The IBM 9516-Bxx has 5 BNC inputs, and it supports sync-on-green (see
Announcement Letter 198-051). The RS/6000 support for the 9516
suggested using either the supplied 15-pin VGA-type cable (58F2901),
or use a GXT150M with the 13W3 to 5 BNC cable (58F2903). The only LCD
panels you'll find in operation in my basement lab are on laptops, 20-
inch CRTs still rule in my little corner of paradise (the fact that I
can usually get them for free these days helps).
Rick Ekblaw
UZnal
> VGA:
> ----------------------------
> \ o1 o2 o3 o4 o5 /
> \ o6 o7 o8 o9 o10 /
> \ o11 o12 o13 o14 o15 /
> --------------------
The IBM VGA reference counts the pins from right to left, connector
orientation as above:
5 4 3 2 1
10 9 8 7 6
15 14 13 12 11
Pins 1, 2 and 3 are R, G and B. The RGB ground pins are respectively 6, 7
and 8. For a monochrome mode of operation, the Green pins 2 and 7 (ground)
are used.
Pin 13 is HSYNC, pin 14 is VSYNC. The three RGB pins plus the two sync pins
make up the 5 terminals of the BNC connectors, with separate horizontal and
vertical sync input terminals.
Basil Holloway
>
> As I remember, when I got my 320 from Seattle, the guy who sold it to
> me had a 3W3 to VGA cable made up for me and I think I sent it to
> Basil in OZ with Gargantua........
>
> Basil, am I right on this?
>
> CT
>
coax connectors that go into the back of the 6091i on the other end. Think
it is for a G150 video card.
Perhaps you were thinking of that special IBM cable you sent with Gargantua
about 13'' long that connects from the serial port to a terminal. Has a
rectangular 10 pin F plug one end and a DB25 M the other end with only 10
pins in it.
How did the Toshiba XM-3401BMA work out ?
Basil
Tim Knight/CT
Hi Basil....
It boots an AIX Install CD just fine, but I get a hangup on 299 then
it goes to 185 and then 180......
I am again lost in Hyperspace (or is that Cyberspace)?
Did you get the 7208-011 yet?
CT
Tim Knight/CT
Let me repost......I think I still have that 3w3 to HD15 cable
somewhere then.......I will start looking.....
CT the Loser of Fine Stuff
Basil Holloway
>> How did the Toshiba XM-3401BMA work out ?
> It boots an AIX Install CD just fine, but I get a hangup on 299 then
> it goes to 185 and then 180......
> I am again lost in Hyperspace (or is that Cyberspace)?
Tim
That behaviour is really strange. I thought once BIST and POST were okay as
signified by 299 it was impossible to regress, but that is apparently what
has happened by you getting 185 and 180 after 299. This is one for RickE,
Michael etc.
> Did you get the 7208-011 yet?
Canada post have confirmed the container was not shipped till 21/6/07 so now
not here till approx mid August. Must have just missed the last shipping
container.
Basil
Michael W. Ryder
If the codes have not changed from my manual the code 299 is when the
IPL (Initial Program Load) ROM passes control to the loaded code. 185
is Checkstop occurred during Built-in Self-Test and 180 is Built-In
Self-Test checkstop logout in progress. It sounds like a hardware
problem. You might try a different hard-drive and see if the same
symptoms appear.
JWR
"UZnal" <unalz-at-mail333-dot-com> schreef in bericht
news:46a4f015$0$25613$91ce...@newsreader02.highway.telekom.at...
> Hi Jelte,
>
>> VGA:
>> ----------------------------
>> \ o1 o2 o3 o4 o5 /
>> \ o6 o7 o8 o9 o10 /
>> \ o11 o12 o13 o14 o15 /
>> --------------------
>
> The IBM VGA reference counts the pins from right to left, connector
> orientation as above:
>
> 5 4 3 2 1
> 10 9 8 7 6
> 15 14 13 12 11
Yes, I expected someone to "correct" me on that! It was just a quick
cut-and-paste job and if you look at the plug from the other side . . . .
;-))
Anyway, the wiringscheme below remains the same.
>
> Pins 1, 2 and 3 are R, G and B. The RGB ground pins are respectively 6, 7
> and 8. For a monochrome mode of operation, the Green pins 2 and 7 (ground)
> are used.
>
> Pin 13 is HSYNC, pin 14 is VSYNC. The three RGB pins plus the two sync
> pins
> make up the 5 terminals of the BNC connectors, with separate horizontal
> and
> vertical sync input terminals.
BTW, in the forum-post I copied this from, there was also this remark :
"Your monitor must support Sync On Green. If it doesn't you can build a sync
separator with a LM1881."
Anyone here know how to do this?
(I'm still trying to connect a B+W VGA monitor to a CGA output).
>
>> 3w3 Pin 1 inside -> VGA Pin 1 (red)
>> 3w3 Pin 1 outside -> VGA Pin 6 (red gnd)
>> 3w3 Pin 2 inside -> VGA Pin 2 (green)
>> 3w3 Pin 2 outside -> VGA Pin 7 (green gnd)
>> 3w3 Pin 3 inside -> VGA Pin 3 (blue)
>> 3w3 Pin 3 outside -> VGA Pin 8 (blue gnd)
>
>
>
--
UZnal
> BTW, in the forum-post I copied this from, there was also this remark :
> "Your monitor must support Sync On Green. If it doesn't you can build a
sync
> separator with a LM1881."
I wonder how the two VGA sync signals (HSYNC/VSYNC) will be combined to
produce a single sync signal which in addition must carry the Green signal.
I suppose, the video quality will suffer. The BNC inputs provide the better
video quality over the standard 15-pin VGA input.
I use both the BNC and VGA inputs on my Eizo monitor, both driven by Matrox
Milleniums from two different machines (at 85 kHz for 105 Hz refresh), and
there is some difference, believe me. The BNC performs better, crisper,
perhaps there is a less noise or cross talk with separate input terminals.
> (I'm still trying to connect a B+W VGA monitor to a CGA output).
The line rate of the CGA, 15.75 kHz for 60 Hz, is half the standard rate of
the VGA, 31.50 kHz. The different refresh rates of the VGA are obtained
through the different dot rates. The CGA has a single dot rate of 14.318
MHz.
If you multiply the CGA output by two, you get the needed 31.5 kHz for the
VGA monitor. AFAIR, the VGA emulates the CGA by scanning each row twice,
that is, the video buffer will be scanned twice so that 320x200 will be read
as 640x400 pixels.
Louis Ohland
VIDEO INPUT Analog/Digital RGB analog (75 ohms, 0.7 Vp-p)/DVI-D (TMDS,
100 ohms)
Frequency Fh: 30~82kHz, Fv: 50~85Hz
Sync H/V separated (TTL), composite, sync-on-green
Frank
Last Year I searching for a new TFT- Monitor and by my search I see a TFT-
Monitor from EIZO which has VGA and BNC connectors with Sync- on- Green
support. It was for industrial use, big and not chaeap!
At the Moment I use for RS/6000 Machines two Iiyama Monitors 17" + 19" and
of Course a IBM 6091 19i.
Frank
"William R. Walsh" <newsg...@idontwantjunqueemail.walshcomptech.com>
schrieb im Newsbeitrag news:w5Woi.36473$Fc.25168@attbi_s21...
Frank
Actual EIZO offers two Models with RGB and Sync on Green. New Models are
equipped with DVI Connector; Adapter required!
See here:
WWW.eizo.de/monitore/lcds/19-zoll/L788.html
WWW.eizo.de/monitore/lcds/21-zoll/L997.html
Frank
"William R. Walsh" <newsg...@idontwantjunqueemail.walshcomptech.com>
schrieb im Newsbeitrag news:w5Woi.36473$Fc.25168@attbi_s21...
UZnal
> equipped with DVI Connector; Adapter required!
Here is a quite complete list of Eizo LCD monitors, however, probing showed
no BNC input terminals, all are equipped with 15-pol D-Sub mini and/or DVI
terminals:
http://www.eizo.com/support/discontinued/lcd/index.asp
One of the earlier TFT LCD models I know is L66 (18", about 1999), but it
too has no BNC input terminals, only 2x D-Sub. The Eizo FlexScan *CRT*
models have normally both D-Sub and 5x BNC terminals.
As for me, I am not going to trade my excellent and completely flat
Trinitron T56S for an LCD or whatever else. It is like paper at 105 Hz and
images benefit from the slight blurr.
Louis Ohland
L788-i DVI-I 29 pin × 2 (switchable)