Rich A., Stefan

In response to yesterday's IMC phase jump (alog 7941) we measured the cable impedance reflection coefficient for the 24.078360MHz cable heading from the PSL rack to the EOM inside the PSL.

Attached is a picture of the measurement. Note
1) The FieldFox internal clock is not very good, but the reference marker corresponds to the actual IMC modulation frequency of 24.078360MHz.
2) The EOM resonance is about one hundred kHz low - we don't get much resonant gain at all.
3) Wiggling that cable didn't produce any visible impedance change.