edmond.merilh@LIGO.ORG - posted 01:23, Tuesday 11 November 2014 - last comment - 10:23, Friday 14 November 2014(14962)
Gain and whitening stages for HAM2 and HAM3 oplevs
In preparation for tomorrow's maintenance on HAM2 and HAM3, I have set the following gains and whitening stages on HAM2 and HAM3 OPLEVs.
| Whitening and Gain settings of | Gain (dB) | Whitening stages |
| HAM2 | 18 | 2 |
| HAM3 | 6 | 2 |
I added the dewhitening filters in the input flter banks of the oplevs and switched on two stages to mirror the analog state. The analog switch states are shown in the attached pics. The label on the cable tells us the name of the oplev that is addressed by the dip-switch board.
The oplevs are, as yet, not calibrated. The HAM3 shows an uncompensated whitening though I have switched on the dewhitening filters stages. Will investigate further.
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Ed writes such nice alogs about oplevs and whitening filters and diode lasers and stuff!!
Imagine how nice it would be if I knew what i was talking about!