Monitor Scan Rate

[D. Christopher Dunlap]

In article <6368 at saturn.ucsc.edu>, skinner at 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 at sgi.sgi.com

Hardware Product Support
Silicon Graphics Computer Systems