Yesterday afternoon we injected some colored noise on the TX and TY BPC degrees of freedom.
| channel | amplitude | GPS start | duration (s) | GPS calm |
| TX | 0.001 | 1192979766 | 180 | 1192930470 |
| TY | 0.003 | 1192979986 | 180 | 1192930470 |
The first plot shows the transfer functions and the coherences between DARM and TX, TY, the second plot is the projection on DARM.
The sensitivity curve is reached at several frequencies, and this is probably due to a different coupling from the previous ITF configuration. In fact, if we compare the transfer functions with DARM with the ones from the BPC injection on oct 6 (entry 39705), we can notice a clear difference (last plot).
