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Reply-To: "fred bartoli"
From: "fred bartoli"
Subject: *standard* VGA sync levels ?
Date: Fri, 29 Nov 2002 15:04:45 +0100
X-Newsreader: Microsoft Outlook Express 5.00.2314.1300
Organization: Guest of ProXad - France
NNTP-Posting-Date: 29 Nov 2002 15:02:02 MET
The fire brigade (I) have to design some protective device (will be a kind
of dongle) that will be insterted between the video output and the monitor
cable to prevent a badly designed video output (our nice work) to "randomly"
latchup in fields (about 5% every two weeks... eh eh, not so bad).
I'm OK with the RGB lines (levels are low) but the HSYNC and VSYNC outputs
are typically 5V levels and I *have* to be ensure clamping under the board
VCC level (the chip seems pretty sensitive and have no specs) which leave no
room at all if taken abruptly.
So I need the minimum *standard defined* level a video card has to put for
(didn't manage to find anything useful outof google)
Anyone has a pointer or the values on top of his hat ?
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