OK so I meant convert an HD15 into a 13W3, it was just a typo on my part.

  ....James


>On Thu, 10 Sep 1998 James Kerr <[log in to unmask]> wrote
>>I was searching and I have found an adapter to convert a regular monitor
>>plug into a HD15 plug so it will fit into this monitor which is an older
>>fixed frequency 21"er, I was wondering does anyone know if this will work
>>with a regular video card? I saw special video cards for some of the older
>>Sun monitors and they were like $300. But someone I asked had a hunch that
>>this monitor with this type of connector on it, which looks like the
regular
>>monitor plug (13W3?) with three small coax looking plugs on it also, I
would
>>really like to get this monitor to work on one of my PC's, that would be
>>awesome, thanks
>
>Excuse me if I have a little problem getting my head round this one :-)
>
>This is an IBM PC list, so around here a 'regular' monitor plug
>is PC VGA/SVGA and _is_ high density D-type 15 way,
>
>(Mutatis mutandis, 'older' PCs would be  MDA/CGA/EGA D9, unless
>you had something like say an AT&T 6300 [Olivetti M24]
>which is 'proprietary' not 'regular'.)
>
>So how would converting a 'regular' plug to a 'HD15' plug
>help it fit into an 'older' monitor?
>
>Does your older monitor have a high density 15 way socket?
>
>Apparently not, since you say it "looks like the regular
>monitor plug (13W3?) with three small coax looking plugs"
>
>You seem to say you want to put a 15 way  plug 'into' a 13W3 plug,
>so now I don't even understand the genders.
>
>There's an amusing limerick that ends
>"who does what and with what and to whom" but that
>kind of confusion doesn't help our engineering along :-)
>
>It's a good idea to give a little clear mechanical description
>rather than rely on on vague expressions of an assumed cultural norm.
>
>"Tommy's pinout collection"
>describes the 13W3 connector as follows...
>---
>Sun
>"13W3" is an unusual connector combining a
>10-pin D-shell and analog three video conductors:
>
>                                 gray/          1  gnd*
>        red   *   *              green blue     2  vertical sync*
>         |   1o  2o  3o  4o  5o    |     |      3  sense #2
>        (O)                       (O)   (O)     4  sense gnd
>            6o  7o  8o  9o 10o                  5  composite sync
>             *   *                              6  horizontal sync*
>                                                7  gnd*
>        * Considered obsolete, may not be       8  sense #1
>          connected.                            9  sense #0
>                                                10 composite gnd
>
>   The codes for the three monitor-sense bits are:
>
>        0 ???                   4 1152 x 900 76Hz 19"
>        1 reserved              5 reserved
>        2 1280 x 1024 76Hz      6 1152 x 900 76Hz 16-17"
>        3 1152 x 900  66Hz      7 no monitor connected
>
>See
>http://cvs.anu.edu.au:80/monitorconversion/ and
>http://rugmd0.chem.rug.nl/~everdij/hitachi.html
>for info on attaching old workstation monitors to VGA boards.
>---
>"alt.comp.hardware.homebuilt FAQ" says...
>The following links provide information how to use workstation monitors on
>PCs:
>
>   * http://madison.tdsnet.com/video/
>   * http://rugmd0.chem.rug.nl/~everdij/con.txt
>   * http://www.paranoia.com/~filipg/HTML/REPAIR/F_Sync_Green.html
>   * SVGA-Sun
>     ftp://ftp.cs.unc.edu/pub/users/mueller/sun.faq
>---
>I can't vouch for these URLs, but I hope the description
>of this ('unusual' - Tommy) connector will help you identify
>the scan resolution and refresh rate of your GDM-1962B,
>then you may be able to select a compatible mode
>on your IBM PC video adaptor.
>
>If it is a fixed frequency monitor it is important to find out the
>correct horizontal scan frequency, because the EHT generator may be
>designed like a TV set as a flyback converter in the horizontal
>deflection circuit tuned to a harmonic of that frequency. If it
>varies more than a few percent it may go off tune, become
>inefficient, overheat and burn out. Brightness and focussing will
>probably be poor too.
>
>
>Len Warner <[log in to unmask]> http://easyweb.easynet.co.uk/~len/
ICQ:10120933
>
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