Hi all,

My original thought was the following:
- as the DAC output is finally output by a Dsub-BNC converter, it will be useful if the output range (seen in MEDM) is from -5 to +5 V.
- as the analog phase shifter only receives positive voltage, it is safer to set limits.
- though it is not very useful, I thought it is fine if we can shift the phase by 90 deg. at max.