I have some questions about the EVAL-HMC587LC4B board:
When I didn't put any tunning voltage to the Vtune port, the eval board give a signal which frequency is approximately 4.9303GHz . However, when I supplied a tunning voltage from 1V to 3V, the signal didn't have any change. Why? Is the eval board is damage ? Or are there other measures I should take when I test the eval board?
Thank you .