c3gHdrDdtmPreference 1.3.6.1.4.1.9.9.661.1.2.1.1.4

HDR Data Dedicated Transmission Mode (DDTM) preference: unknown(1) - DDTM preference is unknown off(2) - DDTM preference set to OFF on(3) - DDTM preference set to ON noChange(4) - DDTM preference is no change