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- Path: sparky!uunet!usc!sdd.hp.com!hplabs!ucbvax!SMITHKLINE.COM!poehland%phvax.dnet
- From: poehland%phvax.dnet@SMITHKLINE.COM
- Newsgroups: comp.sys.atari.8bit
- Subject: XEP-80 & Monitor
- Message-ID: <9209012354.AA22556@smithkline.com>
- Date: 1 Sep 92 23:54:07 GMT
- Sender: daemon@ucbvax.BERKELEY.EDU
- Lines: 31
-
- Jim Johnson's observation of smeared output from an XEP-80 on a color monitor
- was interesting. I'll have to try it for myself, just to see...
-
- I own several XEP-80's & use them routinely. For text displays you can't
- beat it.
-
- However, when I FIRST got an XEP-80 I almost gave up on it. The horizontal
- synch frequency on the XEP-80 isn't quite right. NTSC requires 15.75 KHz on
- the horizontal synch, but the XEP-80 puts out something like 16.4KHz or so.
- So, you get tremendous horizontal shear when you hook up an XEP-80 to a monitor
- that was previously adjusted to work fine with the 40-col output. You have
- to tweek up the horizontal control on the monitor to get a stable display with
- the XEP-80. Some monitors might not permit that much range of adjustment. If
- so, you can't use that monitor with the XEP-80.
-
- Of course, if you tweek up the monitor to work OK in 80-cols, if you switch
- back to 40-col (using The Alchemist's infamous 80-Column Switcher), then of
- course your 40-col display is all screwed up & has to be readjusted. If you're
- using a program like BobTerm that makes use of both outputs, it will drive you
- outta your friggin' mind to have to re-tweek the display every time you switch.
-
- By rapidly switching back & forth between the 2 displays as you twiddle the
- horizontal control knob on the monitor, you can find an intermediate setting
- where the monitor is stable to both displays. That's what I do with mine, &
- so far it has worked on every mono monitor I've tried (Apple II, Heath/Zenith,
- converted DEC Rainbow/VT220, & Pi-3 units).
-
- - BEN POEHLAND [The 8-Bit Alchemist]
- Managing Editor, Atari Classics Magazine
-
- *******************************************************************************
-