FAQs

• What does Abs mean?
• What are Absorbance Units?
• What is Absorbed Energy?
• What is Absorbance?
• What is Blackbody?
• What is Bouguer-Lambert-Beer Law (BLB Law, 'Beer's Law)?
• What is the Calibration Model?
• What is Calibration for 'Real-Time' Reflectance?
• What is Calibration for 'Real-Time' Transmittance?
• What is Calibration of Wavelength?
• What is Chromophore?
• What is Collimated Light?
• What is the Conservation of Energy?
• What is a Derivative Spectrum?
• What is a Difference Spectrum?
• What are Digital numbers (DN)?
• What type of digitization does ASD use?
• What is Emissivity (Emittance)?
• What is Fluorescence?
• What are Immersion Probes?
• What is Intensity?
• What is Isotropic Medium?
• What is Log(1/Reflectance)?
• What is Luminescence?
• What is a Monochromator?
• What is a Photon?
• What is a Photodiode Array (PDA)?
• What are Post-dispersive Spectrophotometers?
• What is a Prediction Model?
• What is Raman Scattering?
• What is Reflectance?
• What are Reflectance Standards?
• What is Reflection?
• What is the Sampling interval?
• What is Scattering?
• What is Signal-to-noise ratio (S/N or SNR)?
• What is Spectral Resolution and Spectral Sampling Interval?
• What is a Spectrograph?
• What is a Spectrometer?
• What is a Spectrophotometer?
• What is a Spectroscope?
• What is Spectroscopy?
• What is a Spectrum?
• What is Transmission?
• What is the Transmittance Reference Standard?
• What is Transmittance?
• What is Wavelength?
• How do I convert spectral data into ASCII text files?
• Why am I getting the error message "spectrometer is not ready?"
• Why isn't my computer collecting spectra even though the instrument is on and running?
• What are the specifications of your fiber optic cable?
• How does the fiber optic cable affect the response of my instrument?
• How can I increase the field of view of my SWIR spectrometer?
• What does the FieldSpec® Foreoptics or fiber optic cable do?
• How do I position the fiber cable in the Pistol Grip?
• Can I use GPS with the RS3 software?
• What factors should be considered under Solar or Artificial illumination?
• How does illumination or light source affect optimization?
• Why should I optimize my ASD spectrometer?
• What operating system does the RS3 software use?
• What are Spectral Discontinuities?
• What are the spectral features and formulas?
• What is Spectrum Averaging?
• What are the temperature effects on the ASD FieldSpec® instrument?
• What are Mylar, Kaolinite and Mercury Argon tests?
• What is the difference between pre-dispersive and post-dispersive?
• What is stray light interference and why does it matter?
• What is chemometrics?