I modified the TTFSS servo since the EOM for the phase actuation was swapped from the free space type EOM to the fiber coupled EOM. The modification is listed below:

• TTFSS servo board
  R4 was replaced by a 2k-ohm resistance.
  D1 and D2 were removed.
  R35 was replaced by a 270-ohm resistance.
  R36 was replaced by a 180-ohm resistance.
  R12 was removed.
   
• TTFSS HV/Interface.
  R42,R47,C25,D3,D4 were removed
  C23 was replaced by a 6.8-nF capacitance.
  R43 was replaced by a 20k-ohm resistance.
  R46 was replaced by a 20k-ohm resistance, and a 270p-F capacitance and a 20k-ohm resistance are parallelly soldered.
  TP2 and TP3 were connected. 

The new circuit diagram will be uploaded in JGWdoc soon.

The transfer functions form the TEST port to the FAST/EOM port is attached. The pole list and the zero list will be reported soon.