Looking at the dump table: LVOF
LVOF: filter flipper
LI20 Experiment → LI20 → Beckhoff Digital I/O → Channel 21 LFOV filter flipper (out: see low-energy tail, main beam saturated; in: light attenuated, main beam is not saturated)
LI20 Experiment → LI20 → Beckhoff Digital I/O → Channel 21 LFOV filter flipper (out: see low-energy tail, main beam saturated; in: light attenuated, main beam is not saturated)