TVLogic LVM-181S Operation Manual page 37

Multi Format LCD Monitor
06 Key Functions
[7] RANGE ERROR
 Pixels with Y' or C' levels exceeding the designated levels adjusted in Y MAX, Y MIN, C MAX and C MIN menu shall
blink.
- After the input signal's Luma(Y') and chroma information(C') are analyzed, if the input signal exceeds the designated
maximum value or it is below the minimum value, the pixels shall blink. This function is to help the user to easily find
out any unwanted levels of signals and set a better exposure.
<RANGE ERROR - OFF>
<RANGE ERROR - ON>
37