Re: 12V pulse to RS232
From: Ken Smith (kensmith_at_green.rahul.net)
Date: 08/10/04
- Next message: Ray L. Volts: "FTL (Faster Than Light) communications?"
- Previous message: Tim Shoppa: "Re: Problem with measure Rin!"
- In reply to: Mickael: "12V pulse to RS232"
- Next in thread: budgie: "Re: 12V pulse to RS232"
- Messages sorted by: [ date ] [ thread ]
Date: Tue, 10 Aug 2004 21:17:13 +0000 (UTC)
In article <93f08e81.0408101309.21a5fe7b@posting.google.com>,
Mickael <arriane82@hotmail.com> wrote:
>I need to read a 12v pulse from a serial port, Can I connect that 12V
>pulse directly to the serial cable (Receive pin) and get information
>from there?
On most desk top PCs, a 0 to 12V pulse that has a width between 1/BAUDRATE
and 8/BAUDRATE will look just like a character has been received.
If this is just something you need to make work, using a couple of small
batteries to displace the pulse down so it rests at lower than -3V will
make it work on all laptops too.
-- -- kensmith@rahul.net forging knowledge
- Next message: Ray L. Volts: "FTL (Faster Than Light) communications?"
- Previous message: Tim Shoppa: "Re: Problem with measure Rin!"
- In reply to: Mickael: "12V pulse to RS232"
- Next in thread: budgie: "Re: 12V pulse to RS232"
- Messages sorted by: [ date ] [ thread ]
Relevant Pages
|
