( ( ( ( ( ( ( A train ) ( of ( step ( input signals ) ) ) ) ( are ( generated ( by ( ( the ( digital-to-analog converter ) ) ( -LRB- ( DAC -RRB- ) ) ) ) ) ) ) , ) and ) ( ( ( the ( analog-to-digital converter ) ) ( -LRB- ( ADC -RRB- ) ) ) ( measures ( ( ( both ( the input ) ) and ) ( ( the ( output voltage ) ) ( of ( the circuit ) ) ) ) ) ) ) . )
(ROOT (S (S (NP (NP (DT A) (NN train)) (PP (IN of) (NP (NN step) (NN input) (NNS signals)))) (VP (VBP are) (VP (VBN generated) (PP (IN by) (NP (NP (DT the) (JJ digital-to-analog) (NN converter)) (PRN (-LRB- -LRB-) (NP (NNP DAC)) (-RRB- -RRB-))))))) (, ,) (CC and) (S (NP (NP (DT the) (JJ analog-to-digital) (NN converter)) (PRN (-LRB- -LRB-) (NP (NNP ADC)) (-RRB- -RRB-))) (VP (VBZ measures) (NP (NP (PDT both) (DT the) (NN input)) (CC and) (NP (NP (DT the) (NN output) (NN voltage)) (PP (IN of) (NP (DT the) (NN circuit))))))) (. .)))
A train of step input signals are generated by the digital-to-analog converter (DAC), and the analog-to-digital converter (ADC) measures both the input and the output voltage of the circuit.
(ROOT (S (NP (NNP Voltage)) (VP (VBZ is) (ADJP (RB continuously) (VBG changing) (PP (IN within) (NP (NP (DT a) (NN circuit)) (PP (IN in) (NP (DT an) (JJ analog) (NN signal))))))) (. .)))