Lub teeb liab tshuab hluav taws xob tau siv los tsim cov teeb meem sine (tsawg zaus) nrog zaus ntawm 20 Hz rau 200 kHz. Dhau li ntawm muaj lub zog tsim tawm, qee tus kuj muaj lub zog tawm. Yog li ntawd, nws yog qhov muaj ntau yam. Nws tuaj yeem siv los ntsuas lossis kho cov yam ntxwv zaus, nce, thiab passband ntawm tsawg zaus zaus hauv cov twj siv hluav taws xob ntau. Nws kuj tseem siv tau ua qhov qhia ntawm qhov teeb meem sab nrauv rau cov teeb liab hluav taws xob loj. Ntxiv mus, thaum ntsuas hluav taws xob hluav taws xob voltmeter, nws muaj peev xwm muab AC teeb liab hluav taws xob. Lub hauv paus ntsiab lus ntawm kev ntsuas hluav taws xob tsawg tsawg: lub kaw lus suav nrog cov qib kev co, lub ntsiab kev co tawm kev hloov kho lub zog potentiometer, voltage amplifier, tso zis hluav taws xob, tso zis hluav taws xob, impedance converter (tso zis hloov hluav taws xob) thiab taw qhia voltmeter.
Qib siab kev co lub ntsiab tsim qhov tsawg-zaus sinusoidal oscillation teeb liab, uas tau ua kom nrov zog los ntawm qhov ntsuas hluav taws xob kom ua tau raws li qhov tsim hluav taws xob voltage. Cov zis attenuator tuaj yeem tso ncaj qha rau qhov ntsuas hluav taws xob, thiab lub ntsiab kev co tawm kev hloov kho potentiometer siv los kho qhov teeb meem tawm.