SpectralLED® RS-7 USER MANUAL Page 60RS-7 can also be operated as an Irradiant source, with units of μW/cm² and lm/m2 (lux). The IRR command isused to specify the working distance, in millimeters, from the outer face of the RS-7 to the target underillumination. The irradiance units will automatically be scaled based on the specified working distance (and alsothe iris position, for RS-7’s equipped with the optional motorized iris, see the IRI command). Specifying aworking distance of 0 millimeters returns the RS-7 to its base Radiance mode. Note that that calibration type(see CTY) will not change from “R” to “I” even when the unit is operating in Irradiance mode (IRR > 0).Syntax:IRR report current working distance in millimetersIRR [mm] specify new working distance as [mm] millimetersIRR 0 return RS-7 to its base Radiance mode calibration & Radiance unitsExamples:irr request current working distance0 working distance of 0 indicates RS-7 is operating as Radiant sourceuni0 select radiometric units (radiance, μW/cm²/sr)Okout request RS-7’s current output level451.34 radiance 451.34 μW/cm²/srirr300 change to Irradiant source at 300mm working distanceOkout request RS-7’s current output level27.051 irradiance at 300mm from output port is 27.051 μW/cm²4.6.6 - STP - Output settling threshhold, percentSets or reports the required RS-7 output settling accuracy. Default is 0.25%.Syntax:STP [percent] set settling threshhold to [percent]%STP report current settling threshholdWhere [percent] is a float between 0 and 100%.Examples:stp1 set settling threshhold to 1%stp report current settling threshhold1