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The copyright in this document is the property of Tritech International Ltd. The document is supplied by Tritech International Ltd on the understanding that it may not be copied, used, or disclosed to others except as authorised in writing by Tritech International Ltd.
Under no circumstances should a product be returned that is contaminated with radioactive material. The name of the organisation which purchased the system is held on record at Tritech International Ltd and details of new software or hardware packages will be announced at regular intervals.
SeaHub provides a LED status panel which displays the communications protocol selected for each Port. The SeaHub also provides a built in DC power supply that can power units. This is intended for testing purposes, but could be used where an alternative power source is not available.
Specification SeaHub 2.2. SeaHub Dimensions (Rack mountable version) 2.2 TYP 432.4 19.0 482.6 462.4 3.5 TYP All dimension shown in mm [inches]. Not to scale. 2.3. Physical Desktop version Materials Stainless Steel housing with Anodised Aluminium front facia Weight 1.3kg Dimensions 242.5 x 191.66 x 53.81mm...
Port B functionality RS232, RS422, RS485 Port C functionality RS232, RS485 or ARCNET (with power output) Port D functionality RS232, RS485 or ARCNET (with power output) 2.5. SeaHub (Desktop version) Panel Connectors Front Panel SeaHub COMMS (PS2 V2-RAT) Surface Interface...
IEC AC power in DE-9 ports A and B DIN45322 ports C and D DC power out DA-15 AIF (ARCNET) connector USB 2.0 (type B) for PC interface 2.6. SeaHub (Rack mountable version) Panel Connectors Front Panel COMMS (PS2 V2-RAT) RS232 RS485...
Prior to connecting the SeaHub to the computer, Seanet Pro must be installed beforehand. See Section 3.1, “Software Installation” for more details. • Connect the computer USB port on the rear panel of the SeaHub to a USB 2.0 port on the User computer with the supplied USB cable assembly.
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From the drop down menu at the top of the screen select Utilities then Com Setup. The Channel Setup page will now be displayed on screen. If this is the first time the SeaHub has been used on the computer an additional dialog box will be shown to indicate that a SeaHub has been detected.
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A list of all the potential devices that Seanet Pro can accept data from will be displayed. To add a new Port from the SeaHub, select the AIF option. The new AIF device will be added to the bottom of the list of available devices.
The screenshots shown are example ones for a Windows 7 installation. Later editions of Windows OS may vary, but the same basic steps are still applicable. If required, contact Tritech International Ltd for more advice and support. 0594-SOM-00001, Issue: 02...
- see Section 4.3, “Setting Up the COM Ports”. 4.1. SeaHub Front Panel The front panel of the SeaHub can be used as a primary diagnostic tool as it displays the communications for each port, as well as the activity currently active on it.
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This contains information that Seanet Pro uses, along with the Checksum, to confirm the device setup information. Type This details the type of device being detected by Seanet Pro. A SeaHub will display the type of SEAHUB, whereas a Super SeaKing Sonar may show SK6. Status This shows the general status of the device.
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For serial based communication protocols (RS232, RS485 and RS422) the Baud rates are controlled through the Channel Setup and not directly via the SeaHub. AVR Uart Mode This allows the SeaHub to accept a RAT on the front 9 way connector. It is not user changeable. ARCNET Baud Rate This drop down selection box changes the baud rate for ARCNET communications.
Operation SeaHub Brightness This control sets the relative brightness of the front panel LEDs of the SeaHub. A setting of 15 is full brightness, with 0 being the lowest possible. Panel LEDs On This control, when unchecked, switch off the front panel LEDs regardless of the Brightness control.
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The Channel Setupwill now be loaded. From the list of available AIF devices, identify the one that is linked to the SeaHub Port that you need to connect your device. Ensure that it, and the SeaHubMain port, are the only SeaHub Ports left enabled.
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Operation SeaHub The default Baud rate for a SeaHub Port is 115200. This can be changed by using the drop down list. The V3 Mode and Rx Sleep options are unused. Click OK once the correct settings have been entered and then close the Channel Setup page by clicking on the close icon at the top right of the page.
Full ESD precautions should be undertaken when the SeaHub is opened in order to limit any potential damage to the internal PCBs. The following steps are required in order to open a SeaHub for inspection or modification of the internal PCBs.
5.2.1. The AC Mains Fuse - Desktop version If the SeaHub does not appear to respond and the LEDs on the front panel do not illuminate when the unit is powered up, the following checks can be carried out to test the main AC fuse.
Antisurge(T)". 5.2.3. The DC Output Fuse If there is no voltage output on the rear Power Sockets when the SeaHub is fully powered (via AC Mains) the following steps can be undertaken to test the appropriate Fuse. Locate fuse holder “F1” on the PCB.
5.2.4. The DC Ext Output Fuses If there is +12V or +5V voltage output on the rear Power Sockets or AIF ARCNET Connector when the SeaHub is fully powered (via AC Mains) the following steps can be undertaken to test the appropriate Fuse.
Ports C & D. For this, the DIN Sockets of Ports C & D must first be configured for ARCNET Comms Mode. The SeaHub has internal jumpers (J19 for Port C, J22 for Port D) which are used to configure the operational mode of Pin 5 on the DIN Sockets.
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SeaHub Caution Before connecting any equipment to the DC output of the SeaHub it is vital that the input voltage tolerance of that equipment be checked. Attaching equipment to a voltage source higher, or lower, than the tolerances specified may damage both that equipment and the SeaHub.
• For twisted pair cables that are greater than 100 metres in length, two termination resistors should be installed, one at either end of the cable. At the surface SeaHub module, a 270Ω resistor should be fitted. At the subsea end of the cable, a 39Ω resistor should be fitted – if there is more than one Sensor connected then this resistor should be fitted at the junction / splice point of the cable.
See Section 5.8, “Closing the SeaHub”. 5.6. Changing the ARCNET Power Supply The SeaHub has an internal jumper to select between +5V and +12V power options for the ARCNET line drive. See Section 5.1, “Opening the SeaHub” for details and precautions on opening the SeaHub.
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Maintenance and Hardware Configuration SeaHub It is possible to lose communication with the surface SeaHub if the baud rate of the SeaHubMain port is taken too low (this is now only adjustable in Supervisor mode), the only way to recover from this is to perform a hardware reset on the unit to reinstate the default settings.
5.8. Closing the SeaHub Caution Once inspection, or modification, has been carried out on the SeaHub it is highly recommended that the unit be reassembled prior to power being applied to it again. This will significantly reduce any risk of damage to the internal PCBs as well as any risk of injury to the user.
6. Troubleshooting When the unit is powered up nothing happens • If using the Rack mount version of the SeaHub, ensure that both the rear power switch (next to the IEC connector) and front power switch are activated • Check that the front panel indicators have not been turned off under software control – if necessary reset the unit to its defaults, see Section 5.7, “...
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• Check the port is correctly configured as RS232 mode through the Seanet configuration interface • If the device is drawing power from the SeaHub, check that the power supply requirements for either the AC (Mains) or DC source have not been exceeded My serial port device doesn’t work in RS485 mode...
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AC (Mains) or DC source have not been exceeded The RAT does not work • Check that the RAT being used is labelled as a “Version 2, PS-2” RAT. The SeaHub unit does not support previous versions (i.e. With Trackball instead of Togglestick pointer).
Normally this is supplied fitted within the ARCNET cable DA-15 or within the SCU/SeaHub at the surface and is left for the user to fit at the sub-sea end in a convenient junction box or by use of a special waterblock.
Alternating Current Originally "Acoustic Interface" but also used to refer to "ARCNET Interface" in which case it can refer to either the interface port on a SeaHub or SCU or to the expansion card available for installation into a computer. ARCNET Attached Resource Computer NETwork - a network protocol similar to Ethernet but with the advantage of working over much longer ranges.
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