[OZAPRS] Small GPS

[James Cameron]

On Mon, Jan 10, 2011 at 10:57:49AM +1000, Andrew Rich wrote:
> The considerations I have struck are
> 
> 1) Does the device do true RS232
> 2) Does the device simulate RS232 at TTL levels
> 3) Does the device do TTL but inverted for the USART in a MICRO
> 4) Does the device meet the minimum requirements for volts in a logic "high"

I think it can be described in simpler terms;

1.  what input voltage range represents a mark,
2.  what input voltage range represents a space,
3.  what output voltage is used for a mark,
4.  what output voltage is used for a space.

I don't think it is worth relying on manufacturers claims regarding
compliance with RS232.

-- 
James Cameron
http://quozl.linux.org.au/