| 摘要 |
PURPOSE:To obtain recording free from shift in the wavelength direction of a spectrum, by adding an averaging means for removing statistical noise and a means for altering a parameter corresponding to time constant in correspondence with a scanning speed to a photometric recording apparatus. CONSTITUTION:A smoothing circuit is constituted from either one of resistances R1, R2, R3, R4 and a condenser C and either one of R1-R4 is selected by a switch S to constitute the smoothing circuit along with the condenser C while the time constant of the smoothing circuit is changed over by the selection of R1-R4. By this constitution, recording free from shift in the wavelength direction of a spectrum can be obtained by the selection of a wavlength scanning speed. |
