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Reports until 12:50, Tuesday 05 April 2016
H1 CDS (SEI, SUS)
david.barker@LIGO.ORG - posted 12:50, Tuesday 05 April 2016 (26448)
ITMY SUS Hardware Watchdog Chassis swapped, still getting intermittent LED errors

FRS ticket 5240

The LED error condition has been triggering on the ITMY HWWD recently. This measures the LED drive current as a voltage monitor, and trips if any of the 6 LEDs voltages drop below a threshold. Jim and I checked the long db37 cables which run from the HWWD in the CER to the M0 top satellite amps in the LVEA biergarten. All connectors are seated and tightened down.

We replaced the HWWD chassis SN1301708 with SN1301704. Both have been recently tested. The LED problem is still present with the new unit. We'll keep the FRS open.

Displaying report 1-1 of 1.