New code was loaded to add an integrator to the low noise VCO which allows the frequency to be be stabilized to a set value. The DC offset slider is used as the actuator. Since the frequency is only read once every second, this is only useful for drift control.

A temporary Agilent frequency counter has been set up in the CER to independently monitor the VCO frequency (ALS DIFF). At first glance the measurements are comparable.