Tvheadend

First of all, yes, I know the setting of 'idle scan muxes'.
But this one-if I understood correctly-will continuously scan for muxes if the adapter is idle. For DVB-C or DVB-T is fine, but for DVB-S with a rotor (Dieqc 1.2, H-H motor) is not so good, as the antenna is continuously moved, causing wear to the equipment.
I would rather have a complete scan at predefined time periods (e.g. ,once per week, month, etc) from a cron job (or something similiar).

Is this possible, as I could not find a way to achieve this...

Thanks in advance.