System Setup dialog box - Hub Controller page
The Hub Controller page allows you to monitor the status of the Communication Hub in the Trawl Unit. This page also allows you to compensate for signal loss if you need to use a long fourth-wire cable between the Communication Hub and the Camera Unit.
Description
The Communication Hub is physically located in the Trawl Unit. It acts as a central connection point for all the subsea equipment used with the FX80 system, and controls the communication between these units and the Bridge Control Unit.
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Details
Hub Status
This field shows you the current status of the Communication Hub.
•  Connected: The Communication Hub is connected to the Bridge Control Unit and it is active and operational.
•  Not Connected: The Communication Hub is not connected to the Bridge Control Unit. The system is not operational. In this case, all other statuses will be set to “N/A” due to the lack of communication.
Camera Status
This field shows you the current status of the camera.
•  Authenticated: The camera is connected to the Communication Hub and is active and operational.
•  Not Authenticated: The camera is either not connected to the Communication Hub, or you have attempted to connect a third-party camera. The camera supplied with the FX80 system is constantly polled by the Communication Hub with an authentication request. Other third-party cameras can therefore not be used.
•  N/A: The Communication Hub is not communicating with the Bridge Control Unit. The availability of the camera is therefore unknown. The system is not operational.
Lamp
This field shows you the current status of the lamp.
•  Off: The lamp is switched off.
•  On (n%): The lamp is switched on. The current intensity is indicated as a percentage.
•  N/A: The Communication Hub is not communicating with the Bridge Control Unit. The availability of the lamp is therefore unknown. The system is not operational.
Auxiliary 1 and Auxiliary 2
These fields show you the current status of the auxiliary inputs.
•  Off: The auxiliary connection is switched off and not used.
•  On: The auxiliary connection is switched on and operating.
•  N/A: The Communication Hub is not communicating with the Bridge Control Unit. The availability of the auxiliary inputs is therefore unknown. The system is not operational.
Long Line Drive
If the Camera Unit is physically located some distance from the Trawl Unit on the headrope, this distance will require a long fourth-wire cable between the two units. On larger trawls, the cable may need to be several hundred meters long.
Unfortunately, a long cable will always result in some signal loss, and such loss is annoying on any video system. In order to compensate for a long cable, the FX80 offers the Long Line Drive parameter. Using this parameter, you can enter the approximate length of the cable, so that the software can compensate automatically.
The following options are available.
•  ‘n’ m: Approximate length of fourth-wire cable.
•  1200*m: Special configuration for very long cable.
•  1200#m: Special configuration for very long cable.