Peter, You may be right I bought this monitor from a used mac equipment reseller and he gave me the unimac vga-mac adapter and he may have done internal mods. Anyhow it seems to work and Ive tweaked the internal pots enough to get a good centered picture. Radius? the box its in says RasterOps but a box is just a box.
I couldnt find the SONY links to get the manual or tech specs on this older tube. do you have this link info? EBC From: [EMAIL PROTECTED] Message-ID: <[EMAIL PROTECTED]> Date: Tue, 28 Jan 2003 11:41:28 EST Subject: Re: RasterOps and 7500 - my experience In a message dated 1/28/03 8:26:30 AM, [EMAIL PROTECTED] writes: << I would look on the back of the monitor and there should be some designations for the brand and model number of the tube mine is Sony GDM 1950 ... >> Sony's GDM family is its high quality series. Both fixed frequency (as supplied to Sun, Radius, HP, and many others) and multiscan (as sold under the Sony name). I.e., the GDM-1936 is a Sony-branded "Multiscan HG" (High Grade) 20" monitor. The GDM-1950 sounds like a number sold by Radius (and possibly others). I seem to recall that the GDM-1950 could be driven by a video card capable of multiple resolutions, but that the "phasing" control of the monitor did not have a wide enough range, without making an internal modification, to actually place the image on the center of the tube. The image was always offset to the left, because the start of the (horizontal) scan lines could not be delayed (phased) long enough, hence the required internal modification . In any case, manuals for a specific GDM family monitor, even if that monitor was not branded Sony, are available from Sony, and the location and values for the relevant parts are shown in the manuals. The modification itself is up to the customer. In the case of the GDM-1950, I simply paralleled the phasing control with a fixed resistor of the same value, effectively reducing the value of the pot by 1/2, and that allowed me to sync that monitor to a standard variable resolution card, such as a Supermac Thunder/24. __________________________________________________ Do you Yahoo!? Yahoo! Mail Plus - Powerful. Affordable. Sign up now. http://mailplus.yahoo.com -- PCI-PowerMacs is sponsored by <http://lowendmac.com/> and... Small Dog Electronics http://www.smalldog.com | Refurbished Drives | -- Sonnet & PowerLogix Upgrades - start at $169 | & CDRWs on Sale! | Support Low End Mac <http://lowendmac.com/lists/support.html> PCI-PowerMacs list info: <http://lowendmac.com/lists/pci-powermacs.shtml> --> AOL users, remove "mailto:"; Send list messages to: <mailto:[EMAIL PROTECTED]> To unsubscribe, email: <mailto:[EMAIL PROTECTED]> For digest mode, email: <mailto:[EMAIL PROTECTED]> Subscription questions: <mailto:[EMAIL PROTECTED]> Archive:<http://www.mail-archive.com/pci-powermacs%40mail.maclaunch.com/> Using a Mac? Free email & more at Applelinks! http://www.applelinks.com
