Cyprien,
I just activated it by
– Launching Spike
– Changing the start freq to 201M
– Clicking ‘up’ on the RBW control from 100k -> 250k -> 6MHz.
When the 6M RBW is active, the whole sweep updates at once (no partial updates). It takes ~5s for a full 12GHz sweep.
Let me know if this doesn’t work for you.