haocun.yu@LIGO.ORG - posted 10:23, Wednesday 08 August 2018 (43319)
OPO TEC Controller Servo Settings
The OPO TEC controller settings were changed to have a faster and stabler servo.
These coefficients are from LLO, which should work for both in-air and in-vacuum.
Loop Shape:
Gain: 700e-3 UGF: 60e-3 Hz
| Zeros(Hz) | Poles(Hz) | |
| #1 | -1(disabled) | 1 |
| #2 | 10e-3 | 100e-3 |
| #3 | 10e-3 | 0 |
| #4 | 10e-3 | 0 |
Before:
Gain: 300e-3 UGF: 60e-3 Hz
| Zeros(Hz) | Poles(Hz) | |
| #1 | -1(disabled) | 1 |
| #2 | 10e-3 | 100e-3 |
| #3 | 10e-3 | -1 |
| #4 | 30e-3 | 0 |
Images attached to this report
