(Alexa, Daniel, Keita)

After changing the RF frequency to 24.389319 MHz and adjusting the delay line phase to 257 steps, we took open loop transfer functions of the PDH loop.

PLL Board Settings:

• Input 1 enable: ON
• Input 1 pol: NEG
• Input 1 gain: 0dB
• Common Comp: ON
• Boost 1: ON
• Generic Filter: ON
• Fast Option: ON
• Fast Gain: -8db
• rest off/zero

PDH Board Settings (Nominal):

• Input 1 enable: ON
• Input 1 pol: NEG
• Input 1 gain: -1dB
• Common Comp: ON
• Boost 1: ON
• rest off/zero (unless specified)

EX_PDH_OpenLoopTF_phase/mag_Nom.txt corresponds to the data collected with the above nominal settings.

EX_PDH_OpenLoopTF_phase/mah_Boost2On.txt corresponds to the data collected wiith the above settings with the addition of Boost 2 ON

EX_PDH_OpenLoopTF_phase/mag_6dBFast.txt corresponds to the data collected with the same as the nominal settings with the addition of 6dB gain in the fast path