Operational Overview-

chassis and sensors in lab

While the HRP-II electronics are on the bench for testing, a monitor, keyboard and mouse can be directly connected to the PC104 computer.  The photo shows the HRP-II in the lab during the test cruise, with the monitor partially visible at the right.  The power supply is secured next to the rack, and the yellow cables are connections to the network.   The logger software, sensor function, power control operation and watchdog operation can all be exercised and tested in this configuration. 

 

When the HRP-II is fully assembled, communications outside the pressure case are via an ethernet connection.  X-server software called VNC running on both the HRP-II and remote computers allows the PC104ís desktop to be displayed at the remote machine instead of a monitor.

 

The interface with the dive control software is through a graphical user interface (GUI) that allows the user to operate the logger by clicking buttons on the screen.  No knowledge of arcane command syntax is required- configuration and testing in addition to setting up and controlling profiles is accomplished by the click of a button.  The main option window gives several function choices that should be done from top to bottom.  Secondary menus appear and ask for additional inputs based on which button started them.  The interface will be documented more fully in another report.

 

hrp_deployment 
The sequence of events associated with each dive is:

 

The handling of the HRP-II is almost exactly as it was for the original profiler.  The key elements are shown in the adjacent photo: a rolling cart on which the HRP-II is secured while on deck, track that is bolted to the deck, and a hydraulic lifting rig that pivots to move the lift point beyond the shipís stern, so the HRP-II can be deployed and recovered without damage due to collisions with the ship.

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