jason.oberling@LIGO.ORG - posted 09:21, Tuesday 09 May 2017 (36100)
PSL HPO Pump Diode Currents Adjusted (FAMIS 8421)
I adjusted the HPO pump diode currents as per FAMIS 8421. All diode currents were increased by 0.1A. The table below summarizes the changes and the attached picture shows the PSL Beckhoff PC main screen for future reference. This was done with the ISS OFF.
| Old (A) | New (A) | |
| DB1 | 52.1 | 52.2 |
| DB2 | 52.1 | 52.2 |
| DB3 | 52.1 | 52.2 |
| DB4 | 52.6 | 52.7 |
I also adjusted the pump diode temperatures. The changes are summarized in the table below:
| Diode Box 1 (°C) | Diode Box 2 (°C) | Diode Box 3 (°C) | Diode Box 4 (°C) | |||||
| Old | New | Old | New | Old | New | Old | New | |
| D1 | 24.5 | 24.0 | 20.0 | 19.5 | 21.5 | 21.0 | 24.0 | 23.5 |
| D2 | 25.0 | 24.5 | 19.5 | 19.0 | 25.5 | 25.0 | 21.5 | 21.0 |
| D3 | 27.0 | 26.5 | 20.5 | 20.0 | 25.5 | 25.0 | 23.0 | 22.5 |
| D4 | 23.5 | 23.0 | 18.5 | 18.0 | 22.5 | 22.0 | 21.5 | 21.0 |
| D5 | 25.5 | 25.0 | 18.5 | 18.0 | 26.5 | 26.0 | 23.5 | 23.0 |
| D6 | 25.0 | 24.5 | 19.0 | 18.5 | 21.0 | 20.5 | 23.5 | 23.0 |
| D7 | 22.5 | 22.0 | 19.5 | 19.0 | 22.0 | 21.5 | 23.5 | 23.0 |
The HPO is now outputting ~168.5 W. The ISS has been turned back ON. This completes FAMIS 8421.
Images attached to this report
