Bosch MIC612 Operation Manual page 84

84 en | Maintenance and Troubleshooting
Problem
A green square appears
intermittently at the upper
right of the video output.
The thermal image
appears 'grainy'.
2016.03 | 2.2 | F.01U.249.416
Explanation
This is the Flat Field Imminent
Symbol. It warns that FFC is about
to begin.
This often occurs when the
temperature of the camera
fluctuates, such as after the camera
is powered on, or when ambient
temperature is changing.
Operation Manual
MIC612 Thermal Camera
Solution
Do nothing; this is
normal operation for
the thermal camera.
Perform a flat-field
correction (FFC).
Bosch Security Systems