The reference signature has only one, punctual value, and the decision making circuit consists of a simple digital comparator
. If the CUT is of a mixed-signal nature, the SA computes an arithmetic residue.
Mark Ashcroft, program manager at the company, explained, "As well as having better timing and electrical specifications than analog triggering, digital comparator
triggering allows multiple comparators, typically at no extra cost and thus much greater flexibility.
The 1-bit quantizer in BHU-2D consists of an 8-bit ADC and a digital comparator
. The threshold of the comparator, which is selected from one of the ADC output code, is always refreshed with the average of the signal.
The main units in the design are an 8-bits digital comparator
and two RS Flip-Flops.
The Millimess 2100 Inductive Digital Comparator
offers integral temperature compensation for improved measurement precision on the shop floor.
Two common types of digital comparators
exist, an Identity comparator and a Magnitude comparator.