Using a scope

Tue Jun 24 13:29:03 GMT 1997

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My scope has two seperate leads, one with an alligator clip, one with a 
sharp point (mine's kinda flattened out actually), and putting across 
anything automotive so far hasn't resulted in anything exploding, smoking, 
or making sizzling sounds.  I do have a 100ma fuse in series with the 
ground lead, which has popped on occasion.  Maybe my scope's input not be 
grounded?  Or maybe its high impedence?  Maybe its just broken?  Its 
certainly an old scope....

Fred

----------
From: 	Tom Cloud
Sent: 	Monday, June 23, 1997 10:55 AM
To: 	diy_efi at coulomb.eng.ohio-state.edu
Subject: 	RE: Using a scope

At 11:42 AM 6/23/97 -0400, Frederic Breitwieser wrote:

>Fear not Mr. Mechanical <smile>, most 'scopes have a high enough impedance 
>(loading capacity) that you can snoop around circuits without causing
>issues, and you can directly attach your 'scope to the injector, and view
>the pulses directly.

Fred .... remember that the scope probe ground clip is attached
directly to the scope chassis and then to the AC ground.  Care
needs to be taken where it's attached in a circuit -- it's
NOT high Z

Tom Cloud <cloud at peaches.ph.utexas.edu>

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