Table T20. Pin assignments of underwater mateable stab plate connectors.
 
OBH - MEG
Function
(OBH)
MSSK-8
#20-CCP
OCC
cable
UMC
pin/A, B
MEG Dsub9
(for OBH)
Power + Vin 1 Red/in 1/A 8 (Red)
0Vin 2 Black/in 2/A 9 (Green)
0Vin 3 Blue/out 2/B 9 (Green)
Signal GND 4 Green/out 1/B 5 (Black)
Rx (+) 5 Red/out 3/B 3 (Orange)
Rx (-) 6 Yellow/out 4/B 4 (White)
Tx (+) 7 Green/in 3/A 2 (Blue)
Tx (-) 8 Blue/in 4/A 1 (Pink)

 
MEG - SAM - LBU
UMC 4p female (LBU out)
UMC 4p female
(to MEG)
UMC 4p female (SAM stab plate)
Function
(MEG/SAM)
MEG 4p male UMC
MEG Dsub15 female
SAM Dsub15 female
1 1 1 Power in (+24 V) 1 1, 2 (Red) 7, 8 (Red)
2 1




3 2 2 GND 2 3, 4 (Green) 5, 6 (Green)
4 2





3 3 RS232C-Rx (SAM—>MEG) 3 12 (Orange) 11 (Blue)

4 4 RS232C-Tx (MEG—>SAM) 4 11 (Blue) 12 (Orange)

 
SAM - ROV
Function
(SAM)
SAM DATA Dsub9 female
(pigtail)
UMC 4p plug (cable)
NC
1
GND 5 (Black) 2
RS232C-Tx (SAM—>ROV) 3 (Orange) 3
RS232C-Rx (ROV—>SAM) 2 (Blue) 4

Notes: OBH = ocean borehole seismometer, MEG = multiple-access expandable gateway. OCC = Ocean Cable Cooperation. UMC = underwater mateable connector. Vin = power supply input, GND = ground, Rx = receive, Tx = transmit. LBU = lithium battery unit, SAM = storage acquisition module. ROV = remotely operated vehicle. NC = no connection.