You may want to try Microtek in Anaheim, CA.

	----------
	From:
[log in to unmask][SMTP:[log in to unmask]] on behalf
of [log in to unmask]
	Sent:  Wednesday, March 26, 1997 8:58 AM
	To:  [log in to unmask]
	Subject:  differential impedance testing

	     Does anyone know of an outfit that performs differential 
	controlled impedance testing as a service.  A two channel unit
is 
	required for this type of test.  Any help on this matter would
be 
	greatly appreciated.  Thank you.

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