[time-nuts] OT: Question on dead HP34401

Bruce Griffiths bruce.griffiths at xtra.co.nz
Tue Dec 11 20:45:11 UTC 2012

paul swed wrote:
> Two comments the manuals available on agilent
> What on earth is a crossguard?
Crossguard comms (Agilents term) refers to the optoisolators used for 
serial communication between the floating and earth referenced logic 


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