Reports until 19:53, Thursday 02 July 2015
H1 CAL (CAL, DetChar, INJ)
peter.shawhan@LIGO.ORG - posted 19:53, Thursday 02 July 2015 - last comment - 10:12, Friday 03 July 2015(19435)
Sign flip seen in ER7 hardware injections 
I selected a loud sine-gaussian injection done during ER7 at each site and compared h(t) data from the HOFT frames against the intended strain waveform; this is documented at https://wiki.ligo.org/Main/HWInjER7#Injection_sign_check .  It looks like the injection came through with the wrong sign at LHO, but with the right sign at LLO.  This should be investigated.
Comments related to this report
peter.shawhan@LIGO.ORG - 10:12, Friday 03 July 2015 (19438)CAL, INJ
Link 

I double-checked the PCAL-based strain sign checks at both LHO and LLO and they seem sound.  So the sign flip seen for the ER7 hardware injections would have to be something related to the actuation path used for the hardware injections, e.g. the inverse actuation filter bank or perhaps the location of a minus sign in the main feedback loop (in the output matrix or elsewhere?).