skinner@saturn.ucsc.edu (Robert Skinner) (02/15/89)
Could someone tell me what the horizontal scan-rate is for IRIS-4D's? That's all, thanks Robert
dunlap@bigboote.SGI.COM (D. Christopher Dunlap) (02/16/89)
In article <6368@saturn.ucsc.edu>, skinner@saturn.ucsc.edu (Robert Skinner) writes: > Could someone tell me what the horizontal scan-rate is for IRIS-4D's? > > That's all, thanks > Robert 60HZ, NON-INTERLACED SYNC SPECIFICATIONS: PIXEL CLOCK.............. 107.352 Mhz PIXEL PERIOD............... 9.3 ns HORIZ FRONT PORCH......... 30 pixeltimes = .279 us HORIZ SYNC............... 120 pixeltimes = 1.118 us HORIZ BACK PORCH......... 250 pixeltimes = 2.329 us HORIZ DISPLAY TIME..... 1,280 pixeltimes = 11.923 us --------------------------------- HORIZ PERIOD........... 1,680 pixeltimes = 15.649 us HORIZ FREQUENCY........... 63.9 Khz VERT FRONT PORCH........... 3 H = .047 ms VERT SYNC.................. 3 H = .047 ms VERT BACK PORCH........... 35 H = .548 ms VERT DISPLAY TIME...... 1,024 H = 16.025 ms --------------------------------- VERT PERIOD............ 1,065 H = 16.667 ms VERT FREQUENCY............ 60.00 Hz * Composite 256 level video: .714 V video .054 V blanking pedestal + .286 V sync ---------------- 1.054 V p-p * System will use a 3 wire ( coax ) interface, with sync on green. * Pixels per inch = lines per inch ( square pixels ) PRELIMINARY SYNC SPECIFICATIONS: CLOVER, 30 hz INTERLACED ---------------------------------------------------------------- PIXEL CLOCK............... 53.676 Mhz PIXEL PERIOD.............. 18.6 ns HORIZ FRONT PORCH......... 40 pixeltimes = .745 us HORIZ SYNC............... 130 pixeltimes = 2.422 us HORIZ BACK PORCH......... 130 pixeltimes = 2.422 us HORIZ DISPLAY TIME..... 1,280 pixeltimes = 23.847 us --------------------------------- HORIZ PERIOD........... 1,580 pixeltimes = 29.436 us HORIZ FREQUENCY........... 33.97 Khz VERT FRONT PORCH........... 4 H = .118 ms VERT SYNC.................. 4 H = .118 ms VERT BACK PORCH........... 45.5 H = 1.339 ms VERT FIELD DISPLAY TIME.. 512 H = 15.071 ms VERT FRAME DISPLAY TIME.1,024 H = 30.142 ms --------------------------------- VERT FIELD PERIOD........ 565.5 H = 16.646 ms VERT FRAME PERIOD...... 1,131 H = 33.292 ms VERT FIELD FREQUENCY...... 60.06 Hz VERT FRAME FREQUENCY...... 30.03 Hz * Composite 256 level video: .714 V video .054 V blanking pedestal + .286 V sync ---------------- 1.054 V p-p * System will use a 3 wire ( coax ) interface, with sync on green. * Pixels per inch = lines per inch ( square pixels ) -- ------------------- D. Christopher Dunlap email: dunlap@sgi.sgi.com Hardware Product Support Silicon Graphics Computer Systems