This morning I completed the weekly PSL FAMIS tasks.
HPO Pump Diode Current Adjust (FAMIS 8445)
With the ISS OFF, I adjusted the operating current of the HPO DBs. Changes are summarized in the below table; a screenshot of the PSL Beckhoff main screen is attached for future reference.
| Operating Current (A) | ||
| Old | New | |
| DB1 | 50.9 | 51.1 |
| DB2 | 53.3 | 53.5 |
| DB3 | 53.3 | 53.5 |
| DB4 | 53.3 | 53.5 |
I did not adjust the operating temperatures of the DBs. The HPO is now outputting 154.2 W and the ISS is back ON. The completes FAMIS 8445.
PSL Power Watchdog Reset (FAMIS 3673)
I reset both PSL power watchdogs at 16:23 UTC (9:23 PDT). This completes FAMIS 3673.
Attached is the updated trend of the HPO pump diode currents since we began adjusting the currents on a weekly basis. The flat spot in the beginning of September was a 2 week period of no adjustments as we swapped the NPRO laser in the 35W FE. To date, the currents are increasing linearly (minus the period in late May and early June when we swapped the failing DB1 for a spare).
