Date   : Thu, 07 Oct 2004 12:03:31 +0100
From   : Mike Tomlinson <mike@...>
Subject: Re: XFER cable (signal voltages)

In article <1097061595.18515.24.camel@...>, Jules
Richardson <julesrichardsonuk@...> writes

>Doesn't the RS232 spec omit signal voltages for logic
>high and low

No.  They are defined in the spec.

> on
>the serial lines, which can cause problems talking to systems expecting
>+/- 12V for signals (e.g. +5V might not be enough for the remote system
>to detect as a logic high)

No.  RS232 and RS485 are electrically compatible.

>Am I worrying about nothing?

Yes.

-- 
.sigmonster on vacation