This is from an ATE manufacturers web site. I tried the Agilent Web site but all I got was errors. ------------------- Guarding
In-circuit measurements often contain parallel impedances that can cause measurements to deviate from component nominal values. Guarding provides the capability to minimize the effects for parallel impedance paths. Guarding uses special sense and drive circuitry to source or sink current into other UUT circuit nodes to eliminate current flow through these paths. --------------------- The idea is that if you force the other nodes on that net to be at 0 volts relative to each other, there will no current flow except that from the node being tested. The HP3060 series used this idea too to isolate components. -=-=-=-=-=-=- "http://www.psyber.com/~dibsed"; -=-=-=-=-=-=- DIBs Electronic Design | Dave Baldwin: [EMAIL PROTECTED] Adapt and overcome. | Buy a book and read it. -=-=--=-=--=-=--=-=--=-=-=-=--=-=--=-=--=-=--=-=--=-=--=-=- -- Author: Dave Baldwin INET: [EMAIL PROTECTED] Fat City Hosting, San Diego, California -- http://www.fatcity.com --------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB CHIPDIR-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
