No, it doesn't include that. And some video standards are to 1V p-p. I think this is the standard Chandan was asking about. -Stephanie > -----Original Message----- > From: Larry Miller [SMTP:lmiller@xxxxxxxxxxxxxxxxxxxx] > Sent: Wednesday, August 01, 2001 1:42 PM > To: Goedecke, Stephanie K; chandan_career@xxxxxxxxx; > si-list@xxxxxxxxxxxxx > Subject: RE: [SI-LIST] Re: VGA/VIDEO: IMPEDANCE & LENGTH > > Does the RGB 0.700v include the blanking pedestal? I thought that brought > the whole shebang up to 1 v p-p. > > Larry Miller > > -----Original Message----- > From: stephanie.k.goedecke@xxxxxxxxxxxxxx > [mailto:stephanie.k.goedecke@xxxxxxxxxxxxxx] > Sent: Wednesday, August 01, 2001 1:19 PM > To: chandan_career@xxxxxxxxx; si-list@xxxxxxxxxxxxx > Subject: [SI-LIST] Re: VGA/VIDEO: IMPEDANCE & LENGTH > > > > The HSYNC and VSYNC signals have TTL levels. I often see 300-1k ohm > series resistors on them. > > The analog R,G and B should be 75ohms. The maximum voltage should be > 0.700 Volts + 0.07 Volts/-0.035 Volts > > You can get the VSIS standard from > > Video Electronics Standards Association > 920 Hillview Court, Suite 140 > Milpitas, CA 95035 > 408-957-9270 > > > > -----Original Message----- > > From: Chandan [SMTP:chandan_career@xxxxxxxxx] > > Sent: Wednesday, August 01, 2001 9:24 AM > > To: SI FORUM > > Subject: [SI-LIST] VGA/VIDEO: IMPEDANCE & LENGTH > > > > > > Hi everybody, > > > > The video interface between a motherboard & a monitor > > typically consists of the following signals: > > 1. RED, GREEN & BLUE > > 2. HSYNC, VSYNC etc. > > > > My questions: > > 1. Are there specifications for the characteristic > > impedance of these signals? For e.g., the USB > > specification defines the characteristic impedance > > with which the USB signals must be routed with. > > I'm not too sure, but I think that the RED, GREEN & > > BLUE lines must be routed with a characteristic > > impedance of 37.5 ohms, whereas the HSYNC & VSYNC > > signals must be routed with a trace of characteristic > > impedance of 40 ohms. Could someone clarify please. > > > > 2. Are there specifications for the maximum length of > > these signals? > > As of now, I think that the length on the motherboard > > really does not matter. This is because, after the > > signals leave the motherboard, the cable that connects > > to the monitor is at least a foot in length. PLease > > comment. > > > > Thanks, > > Chandan > > > > __________________________________________________ > > Do You Yahoo!? > > Make international calls for as low as $.04/minute with Yahoo! Messenger > > http://phonecard.yahoo.com/ > > ------------------------------------------------------------------ > > To unsubscribe from si-list: > > si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field > > For help: > > si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field > > > > List archives are viewable at: > > //www.freelists.org/archives/si-list > > or at our remote archives: > > http://groups.yahoo.com/group/si-list/messages > > Old (prior to June 6, 2001) list archives are viewable at: > > http://www.qsl.net/wb6tpu > > > ------------------------------------------------------------------ > To unsubscribe from si-list: > si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field > For help: > si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field > > List archives are viewable at: > //www.freelists.org/archives/si-list > or at our remote archives: > http://groups.yahoo.com/group/si-list/messages > Old (prior to June 6, 2001) list archives are viewable at: > http://www.qsl.net/wb6tpu > ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List archives are viewable at: //www.freelists.org/archives/si-list or at our remote archives: http://groups.yahoo.com/group/si-list/messages Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu