Campbell Scientific OBS-3+ and OBS300 Suspended Solids and Turbidity Monitors - Manual (Page 49)

Appendix C. Electrical Connections
Details
FIGURE C-1 shows the contact numbers for the MCIL/MCBH-5 connectors
and TABLE C-1 lists the electrical functions and wire colors. The user need
only be concerned with the wire colors for the 8425 cable as the MCBH wires
are not accessible. When a custom cable assembly is purchased from a third-
party vendor to connect the OBS sensor to a current meter or CTD, the user
will not have access to any of the wires listed in TABLE C-1.
FIGURE C-1. Pin assignments for MCBH and MCIL wet-pluggable
connectors
MP Face View
GREEN WHITE
BLACK BLUE
RED
FS
C-1