My question involves a speeding ticket from the State of: CA

VC 22349[a] - 80mph in 65.

I had heard that the officer has to 'lock in' your speed on the radar and if you ask, that he HAS to show it to you. I did so and he refused.
I also asked him to write on the ticket that the speed was not locked in and he refused.
Is it required to sign the ticket. I refused at first and officer threatened to take me to jail.