This command is invoked by striking the "F" key. The MicronEye normally uses the same exposure setting time after time, and only modifies the exposure setting when told to do so. This is referred to as a fixed exposure setting. The MicronEye can also operate such that the exposure time will change dynamically to maintain a specified light level. This is referred to as an auto-adjust setting.
When the camera is in the auto-adjust mode and you want to return to the fixed exposure mode use this command. The camera will fix the exposure time to the exposure time being used at the time the command IS given.