This morning I completed the weekly PSL FAMIS tasks.
HPO Pump Diode Current Adjust (FAMIS 8452)
With the ISS OFF, I adjusted the operating current of the HPO DBs. The changes are summarized in the below table, I also attached a screenshot of the PSL Beckhoff main screen for future reference.
| Operating Current (A) | ||
| Old | New | |
| DB1 | 53.2 | 53.4 |
| DB2 | 55.0 | 55.2 |
| DB3 | 55.0 | 55.2 |
| DB4 | 55.0 | 55.2 |
I did not adjust the operating temperatures of the DBs. The HPO is now outputting 155.4 W and the ISS is back ON. This completes FAMIS 8452.
PSL Power Watchdog Reset (FAMIS 4023)
I reset both PSL power watchdogs at 16:55 UTC (8:55 PST). This completes FAMIS 4023.
Attached is the running trend of diode box current increaes since we started weekly adjustments. The large increases required at the end of November seem to have leveled off back to the more normal 0.2 A weekly increase. We are continuing to monitor this.
