32 Rev 001Fig. 2 Fig. 3 Fig. 47.5 What are Isotherms and how do I select them?Isotherms are regions within the scene having the same temperature rangewhich are shown in the same colour. This is best seen using either the WhiteHot or Black Hot palettes. For example it can be useful to see all electricalconnections in a electrical cabinet that are within the same, user defined,temperature range. This could very easily identify all components that maybe overheating.Selecting Isotherms1. Press Hotkey 4 to select the menu (Fig 1).2. Use the left/right navigation buttons move to the MeasurementOptions menu (See Fig 2) and Press Hotkey 3 to select it(Fig 3).3. Use the up/down navigation buttons move to the Isotherms option(Fig. 3).4. Use the left/right navigation buttons to toggle through the Isothermsoptions-“High”, “Low”, “High & Low”, and “Off”.5. Press Hotkey 4 to exit.6. Press Hotkey 1 to toggle through until the isotherm icons appear.7. Use the left/right navigation buttons to adjust the isotherm range andspan (Fig 4).Hotkey 1 Hotkey 2 Hotkey 3 Hotkey 4Fig 1.Centre toggle buttonUp/Down, Left/Rightnavigation buttons.