This holds a comma-separated string listing the human-readable enumeration values that valueRfInput's sibling object valueVideoOffset can take, matching numeric codes starting at 1 (for Video Offset that's minus2dB(1), minus3dB(2), minus4dB(3), or minus5dB(4)). Management software reads this string dynamically to build a drop-down or label for the control that selects how far, in dB, the video/RF signal level is offset down from its reference level, instead of hardcoding the enumeration text for every possible parameter in the client itself.