Re: TECH: Tempest reset line question

-----Original Message-----
From: "Roger Smith" <whooshdoo@hotmail.com>
To: vectorlist@vectorlist.org
Date: Sun, 01 Feb 2004 22:35:41 -0600
Subject: VECTOR: TECH: Tempest reset line question

>
> The reset circuit shows 3.2v and doesn't change when I press the reset
> button. What voltage should this be at normally and what voltage should it
> change to when the reset button is momentarily pushed in?
>
> Also the outputs of the 74LS193 @ C4 for the 6 MHZ signal are not pulsing,
> but their respective inputs are. Should those outputs be pulsing as well?
> Could this indicate a bad chip?
>
> BTW, the +/-22v is at +/-24.7v. Is this ok? Other than that all power
> connections and voltages seem to be fine.
>
> Thanks much!,
> Roger
>
that chip sounds screwed - change it.

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Received on Mon Feb 2 06:55:38 2004