Operator Manual
Issue 1
TIL – Eng – Spec – 080
Page 12 of 70
SeaHub
The internal design of the SeaHub can be summarised by the figure below…
ArcNet
Controller
(and source selection)
Microprocessor
Programmable
Gate Array
Dual USB
Interface
USB Hub Controller
Over Current
Protection
2 External
USB Ports
Isolation Barrier
Serial Hardware
(RS232, RS485)
(and source selection)
Port A Connector
(9-Way D-Type)
Port B Connector
(9-Way D-Type)
Port C Connector
(6-Way DIN or 9-
Way D-Type)
Port D Connector
(6-Way DIN or 9-
Way D-Type)
Serial Hardware
(RS232, RS485,
RS422)
(and source selection)
Serial Hardware
(RS232, RS485)
(and source selection)
Serial Hardware
(RS232, RS485)
(and source selection)
Physical Layer
Selection Circuit
Physical Layer
Selection Circuit
Physical Layer
Selection Circuit
Physical Layer
Selection Circuit
Dual USB
Interface
Status and Mode
LED’s
Differential
Driver
Isolation Barrier
AIF (ArcNet) Connector
TT
L
Dual USB
Interface
RAT Interface
(PS2 to USB &
RS485)
RAT Port
PC USB Interface