daniel.sigg@LIGO.ORG - posted 12:37, Tuesday 26 February 2019 (47130)
Common mode board readbacks
This continues an investigation from alog 45157 to look at the DAQ readbacks of the common mode board in reflection. The attached plot shows the channels for a measurement during the long good lock at 30W (GPS 1235030418; UTC 2/24/2019 08:00:00):
- ERR: is limited by AC noise between 60 Hz and 1 kHz
- SLOW: seems good
- CTRL: still limited by down-converted noise
| Channel | Gain (dB) |
|---|---|
| LSC-REFL_SERVO_IN1GAIN | +6 |
| LSC-REFL_SUM_A_IN2GAIN | +8 |
| LSC-REFL_SERVO_FASTGAIN | +16 |
| IMC-REFL_SERVO_IN2GAIN | –22 |
| IMC-REFL_SERVO_IN1GAIN | +22 |
| IMC-REFL_SERVO_FASTGAIN | –18 |
Non-image files attached to this report
