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A G R E AT E R M E A S U R E O F C O N F I D E N C E test systems using a GPIB (IEEE-488 bus)
link to deliver commands to control each
step of a test. While this was a considerable
advance over what went before, it has a sig-
nificant speed penalty. GPIB, first off, has
considerable communications overhead. The
other disadvantage to GPIB for real-time
Increasing RF device
test control comes from what's generally
at the other end of the line: A PC running
Windows