Re: Signal Conditioning Borad

Ed Casas (edc@ece.ubc.ca) Wed, 6 Dec 2000 10:49:44 -0800 

Date: Wed, 6 Dec 2000 10:49:44 -0800
From: Ed Casas <edc@ece.ubc.ca>
Subject: Re: Signal Conditioning Borad



> I have a question regarding the liquid level sensor ICs that is
> contained in the signal conditioning board in Lab3.  In the
> lab, it indicates that the logic level is inverted on the
> interface card so that the computer receives a logic 1 instead
> of 0 when there is no liquid present. I was wondering is this
> true for all the signal conditioning board or it is just for
> this case?

Just for this particular equipment.

> Furthermore, if a similar question is asked in the final, do we
> still inverted the logic as we did in the lab?

The behaviour of sensors will be described in the question.

-- 
Ed Casas   edc@ece.ubc.ca   http://casas.ece.ubc.ca   +1 604 822-2592