[comp.sys.atari.st] Thomson Monitor

hong@garfield.MUN.EDU (Hong Cheng) (10/19/88)

Hello,
I have a problem to try to connect the Thomson 4120 Color monitor to
my 1040 ST. After weeks of experiments, I finally got the screen up.
However, the screen is jumping vertically. I can't never stop it.
My connection parts included a ST monitor cable from Pratical
Solution and 2 didodes (4001) for both H-sync and V-sync to the composite
sync of Thomson. (I used Thomson RGB Analog mode for connection.) Can
somebody in Netland tell me what to do, please.
Thx

glk2462@uxf.cso.uiuc.edu (10/26/88)

	Well, here is my solution, probably not the best, and I am working
	on a better one.  E-mail or post me a message for a better idea.
	I tried your method, to no avail, so I ended up hooking the following
	pins together ATARI-->THOMSON (I did this in RGB, not RGBI mode).

		1. HSYNC	CompSYNC
		2. R,G,B	R,G,B
		3. Grounds	Grounds
		4. I had to put the ChangeHZ.prg in the auto folder to stop
			the screen from flipping.


	                  Y.I.T.B.O.S.  Ernest C. Spieu!  glk2462@uiucuxf

glk2462@uxf.cso.uiuc.edu (10/27/88)

	NEW NEWS:
		Thomson was very friendly on the phone
		at 714-835-0846. The solution is as follows:


		Vsync----300 Ohm R----.
				       \Pin 7
				       / (Comp Sync)
		Hsync----300 Ohm R----'


	                  Y.I.T.B.O.S.  Ernest C. Spieu!  glk2462@uiucuxf