You want to know V(NU) and V(ND)???
Там импульсное напряжение?<-- Нет.
No, one thing you need to know is Fout like p.11 (PIN19 of HMC529LP5) because Fout =Fout(VNU, VND) and VNU, VND depend on N0,.., N5
Do your PCB schematic like in p.11 (may be use another VCO, loop filter (active or passive filter)). Also, you can use a MCU (Atmega, Xilinx, ...) to drive N0, ..., N5 as you want.
Then, if you want to know V(NU)(fi), V(ND)(fi) you can measure them .