Codonics 1575 Problem

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2 total messages Started by Jeff Burrows Mon, 16 Nov 1992 20:19

#1296

Author: Jeff Burrows
Date: Mon, 16 Nov 1992 20:19

23 lines
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Hi

I have a (Cleveland) Codonics 1575, which toggles between being a text
(Wyse 75) and a graphics (Tektronix 4014) terminal. It's great, except
for one thing: the graphics screen is much dimmer than the text
screen.  This has some irritating consequences.

A) I am continually adjusting the intensity dial as I toggle between
screens.
B) In the day, ambient light really drowns out my graphics, even when
I have intensity cranked.
C) In the evening, when I forget to turn down the intensity before
returning to text, my retinas get nuked.

Nothing in SetUp or the manual seems to apply.
Anybody have suggestions? Mainly on the theme of easy (I'm no
electrician) adjustments to the terminal. Much obliged,

Jeff Burrows                    ____            |   burrows@bcu.ubc.ca
Fisheries Centre, U.B.C.      \/   o\           |                __o
Vancouver, B.C.               /\____/           |              -\<,
Canada, V6T 1Z4                                 |   ..........O / O

Re: Codonics 1575 Problem

#1300

Author: Duane P Mantick
Date: Tue, 17 Nov 1992 17:09

30 lines
1840 bytes

[stuff about Codonics 1575 deleted]

With all due respect for the poster, this is yet another example of
what you get when you try to make a dumb terminal do something it was
never really designed for in the first place.

I have been inflicted with graphics add-ons for the VT-100, the adm3a,
the adm5 and various WYSE/Codonics stuff.  There are loads of others
out there.  IMHO, they are 99% junk.

The Codonics might well be the best of the lot - too bad they started with
a thoroughly crappy terminal like a WYSE-xx.

To answer the question, we diddled with the 1575 and never really found a GOOD
way to keep the intensities the same between text mode and graphics mode.
I never thought they were really far enough apart to be worth screwing
around with, if possibly only because the stupid WYSE part of the unit
could detonate at any moment.  In this case, I take the approach of if it ain't
really broke, don't try to fix it!  (you might make it WORSE)

If you really want a graphics terminal, BUY A GRAPHICS TERMINAL.  While it
will cost you an arm and a leg, you *might* be better off.  

(and you might not - depends on what you buy.....)

Duane Mantick
Supervisor of Terminal Repair
Engineering Computer Network
Purdue University

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