Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!mnetor!uunet!nbires!hao!noao!mcdsun!fnf From: fnf@mcdsun.UUCP (Fred Fish) Newsgroups: comp.sys.amiga Subject: Re: That MAC II Monitor Message-ID: <429@mcdsun.UUCP> Date: Sat, 31-Oct-87 01:47:50 EST Article-I.D.: mcdsun.429 Posted: Sat Oct 31 01:47:50 1987 Date-Received: Thu, 5-Nov-87 05:40:09 EST References: <253@PT.CS.CMU.EDU> <642@louie.udel.EDU> <267@gethen.UUCP> Reply-To: fnf@mcdsun.UUCP (Fred Fish) Organization: Motorola Microcomputer Division Lines: 78 In article <267@gethen.UUCP> farren@gethen.UUCP (Michael J. Farren) writes: >In article <642@louie.udel.EDU> rminnich@udel.EDU (Ron Minnich) writes: >>Just got a look at a MAC II. Nice box. I do not like it as much >>as my amiga but there are individual things i like a lot better, one >>of which is the monitor. Can anyone explain: >>1) What is the refresh rate (i.e. did they get that nice display >> with 60 hz.?) > >The refresh rate may or may not be 60 Hz, but the horizontal frequency >is certainly not 15KHz, the NTSC value. Probably about twice that, >30 KHz or so. This figure, rather than the refresh rate, is what >determines how much a monitor can display on one frame - interlace >mode on the Amiga splits a screen up into two frames, which introduces >interlacing and all of its flicker problems. From the Appendix of the AppleColor RGB Monitor manual: Picture tube: 13-inch viewable diagonal .25 mm aperture grille pitch Trinitron CRT Input Signals: Red, green, and blue video signals using RS-343 standard. Composit sync., negative going TTL User controls: Power switch (back panel) Degauss switch (back panel) Brightness, with detent reference (right side) Contrast (right side) V-twist misconvergence adjustment (back panel) H-stat misconvergence adjustment (back panel) Scanning Frequencies: 35.000 Khz horizonal 66.7 Hz vertical Video bandwidth: +/- 1.0db to 23 MHz Resolution: 640 horizonal pixels by 480 vertical lines Active video display: Adjusted at the factory to produce an active video area of 235 mm horizontal by 176 mm vertical. The remainder of the screen is used for the dark border around the display. Weight: 34 lbs including video cable and power cord Power requirement: 160 watts maximum Input voltage: 50-60Hz, 85-270 Vrms, self-configuring Operating temp: 10 deg C to 35 deg C (50-95 deg F) Operating Humidity: 90 % maximum, non-condensing Operating Altitude: 10,000 feet maximum (!!! -Fred) Warm-up time: 20 minutes to meet all specifications. Input signal Jack: DA-15 style connector 1 Red video return 2 Red video 3 Composite TTL sync 4 Composite sync return 5 Green video 6 Green video return 7 (not used) 8 (not used) 9 Blue video 10 (not used) 11 (not used) 12 (not used) 13 Blue video return 14 (not used) 15 (not used) Shell Shield ground -- # Fred Fish hao!noao!mcdsun!fnf (602) 438-3614 # Motorola Computer Division, 2900 S. Diablo Way, Tempe, Az 85282 USA