FA Mode (TR and IR) FA Mode (TR and IR) A simplified differential-imaging mode for quick fault localization. Key features: Camera Image Display — grab (hand), zoom (magnifier, SHIFT-CLICK to zoom out), and area select (square, used with the merged image to crop to ROI) tools. Output Voltage Control — device voltage and output source. Camera Histogram — brightness, set previously in Project Manager. Thermal Image Display — calculated thermal image; scale bars compress the scale. ROI Statistics — Temperature Value (ΔT); CTR or E (material coefficient, user-entered); Scale Bars; ROI Tools (rectangle, annulus, freehand, point). Region Mean Graph — history of measured ROIs; ideally within 5% before stopping; right-click "clear chart" to reset.