This BNC input adapter is required when connecting un-isolated third party devices (i.e., amplifiers, chart recorders, or signal generators) while electrodes, attached to human Subjects, are connected to other input channels.
Since all MP inputs share a common isolated ground, connecting an
un-isolated device to any channel voids the isolation for all channels
and exposes the Subject to possible shock hazards.
Connect to the analog input ports on the front panel of the MP36/35 (labeled "CH1" - "CH4") to record signals from un-isolated third-party devices.