Patent ID: 11879833
Assignee: JASCO CORPORATION
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 7:
8. A circular dichroism measurement method for measuring circular dichroism of a sample based on a polarization-modulation method, the measurement method comprising:
extracting, via a computer, an AC component (ADsignal(AC)) and a DC component (ADsignal(DC)) from a digital waveform of a detection signal that is amplified and converted to a digital signal;
calculating, via the computer, a gain of entire system components disposed on a signal path that linearly connects a photo detector to an A/D converter as a system gain (g); and
calculating, via the computer, a measurement value of circular dichroism based on the AC component (ADsignal(AC)), the DC component (ADsignal(DC)), and the system gain (g)
wherein both the AC component and the DC component are amplified by a same amplifier and are both provided to the A/D converter.