[Ymamoto, Ushiba]

Abstract:
We installed whitening filter at LSC0 lack for GrXRFPD DC.
We also checked the PDA100A cables at POP table.

Details:
Turn off the RFPD interface circuit at 10:07 JST.
Insert the whitening filter between RFPD interface output and AA filter input (fig.2).
Turn on whitening filter and RFPD interface at 10:28 JST.
Measure spectra of GrX RFPD DC and decide the whitening setup (+12 dB overall gain and one zero pole filter is ON(fig.2). Detail will be posted by Yamamoto-kun).
Implement dewhitening filter at K1:ALS-X_ARM_REFL filter bank (fig.3). 

We also checked the POP table whether there is a cable which can be easily used for PDA100A if necessary.
Figure 4 shows the current POP table, and the cables of PDA100A for Green injection power monitor seems to be used.