Two additional narrowband channels of the Scanner of Radiation Budget (ScaRaB) instrument should improve the Earth Radiation Budget Experiment (ERBE) cloud scene identification. (pubs.giss.nasa.gov)
The voltage output steadily climbs until about 0.1 V (lower limit for normal narrowband O2 sensor output), which is when your DTC kicks in. (mechanics.stackexchange.com)
The mfrsrcldod1min value - added product produces cloud optical depth for overcast liquid clouds using narrowband irradiance measurements from the multifilter rotating shadowband radiometer (MFRSR). (arm.gov)