A new window feature, which computes min/max values over a given time, and then compares them to custiom low/high limits, was installed for the DCPD ADC inputs. This allows an easy way to check for violin modes that are too large.
I win! I found the screens. To get to to these: SITEMAP -> OMC -> OMC Overview -> IFO DC Readout (black button on the right) -> DCPDs (in upper left corner -> Window A or B
A lot of the meat of this new window block lives in the c-code MAX_MIN_CALC.c. This code lives in the userapps repo: /opt/rtcds/userapps/release/cds/common/src/MAX_MIN_CALC.c