Maximum Installable Units on the MR8875

QWhy does the MR8905 Analog Unit only offer 2 channels, and how many units can be installed in the MR8875 Memory HiCorder?

A

Because the MR8905 is a high voltage unit, we use banana plugs rather than BNC terminals, unlike the other analog units in the series.  Due to this hardware specification, two terminals (+ and -) are required for each channel, limiting the physical space available to only 2 channels per  unit.   The maximum number of MR8905 Analog Units that can be installed in the MR8875 is 4, for a maximum of 8 high voltage channels.