Summary:
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Shift was mostly quiet. Some glitching. Wind starting picking up ~ 3 hours ago gusting to around 35mph. Recovery after Lockloss is proving to be a bit of a chore. Mode Cleaner is unlocked and trying to relock but the curious thing is while the REFL shows it trying to lock in flashes the TRANS isn’t showing sympathetic flashing. hmm. Handing off to Nutsinee.
ACTIVITY LOG:
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16:21 a glitch occurred between 50Hz and 300Hz
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16:25 Robert on site. He suggests that high frequency noise in an oscillator is causing the lack of normal range.
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16:58 ETMY glitch
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17:30 EX Pump differential pressure alarm going off.(yellow)
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17:41 ETMY saturating for ~ 1 minute repeatedly.
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17:42 OMC DCPD saturated a couple of times. WE SURVIVED THE GLITCHES.
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17:43 Noticed the landscapers are here for tumbleweed/weed control. (as scheduled)
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18:00 Landscapers moved their truck from the LSB to the OSB
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18:03 LLO in Observing mode
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18:15 Kiwamu on site
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22:03 Lockloss
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22:13 Locking ALS giving a bit of trouble in the X dept.
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23:00 Still trying to get arms locked and setlled. Handing off to Nutsinee
LOCK LOG:
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22:03 Lock Loss - PRM saturating
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Strange thing is, Guardian tried to go straight to LOCK_DRMI_1F?? It then proceeded to LOCKLOSS and then DOWN. It then proceeded normally.
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The guardian checks for locklosses of the mode cleaner and DRMI, and it is just a roll of the dice which it will noticed first. In the early stages of lock acquisition it makes sense to proceed to LOCK_DRMI if only DRMI has lost lock, that saves us from unecesarily relocking ALS. In full lock I agree tihs doesn't really make sense, but if the guardian goes to LOCK_DRMI after a lockloss it will imediately proceed to lockloss as you saw.