Page History

Karl Schwenz, Chris Golubieski, Gordon Maclean

GoalsObjectives:

• Diagnose and fix reason that system has been offline for last few days (no data in Boulder after April 27).
• Replace data system box in order to take the old box back back to Boulder for checkouta tuneup.
• Replace top TRHs which have not been working well. Add new radiation shields.
• Replace barometer with external unit.
• Make anti-climb door easier to latch.

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Replaced the barometer. New unit is B1 with chassis outside of the DSM. Old was B9, inside the DSM.

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Karl fixed the anti-climb door. Works like a breeze now. If door is ever difficult to latch give a hand knock on the bottom right corner to shift it to the left. Hinge bolts should be replaced with correct size on a future visit.

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Site note: There is a strong smell of what I believe is butanol in the seatainer where the turbulence tower fibers are terminated. This is the first seatainer as one drives into the site. There are several butanol bottles in that seatainer.

The manual for the fiber/copper network converters (Transition Networks, model E-100BTX-FX-05) describes the dip switch options. I've cut and pasted some of the manual to the end of this entry. It seems that we should disable the link pass-through and far-end fault options on both converters. Link pass-through and far-end fault options can cause a copper interface to be disabled if a fault is detected on the remote copper interface or on the fiber. These options appear to be for a building network with good network monitoring equipment. Perhaps a power outage, cable disconnect, or powering down a network switch could cause the converters to think there is a fault in the copper lineethernet or the fiber, and then the copper interfaces would be disabled. The manual says nothing about whether the interfaces are automatically brought up if the fault disappears.

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