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Operator Manual
Issue 1
TIL – Eng – Spec – 080
Page 57 of 70
SeaHub
7.8. Enabling the legacy Serial Port on the AIF connector
If backward compatibility with a serial port on an AIF card is required, it is possible to connect the four
RS232 serial signals (TX, RX, RTS and CTS) to pins on the “AIF ArcNet” connector on the rear of the
unit. This procedure describes this.
CAUTION!
By default this option is not fitted, as connecting a device to Port-A and the AIF-
ArcNet serial port simultaneously may cause damage to both serial devices.
It is suggested that the ribbon-cable header to Port-A be disconnected from the PCB
if this procedure is undertaken, to prevent possible damage from occurring.
CAUTION!
Observe Precautions For Handling Electrostatic Sensitive Devices – see Section 2.2
1) Unplug the SeaHub unit from any power sources.
2) Follow the steps described in section 7.1 to open the housing.
3) This procedure requires access to the underside of the
PCB, which must first be completely removed from the
housing.
Start by unplugging the ribbon cable headers for Port-A,
Port-B and the AIF-ArcNet connector from the PCB
4) Unplug the Earth spade socket from the back of the IEC
mains inlet power connector (the Yellow/Green wire – this
cannot be disconnected from the PCB)
5) Unplug the 2-wire mains power header from the PSU
module (with the blue and brown cables)