Are digital servos meant to sounds like old dot matrix printers?

[Cassp0nk]

Hi,

Just bought a new kit for the first time in 20 years and having installed the electrics, I'm wondering if my servo is meant to make the noises it does?

radio gear is a spektrum dx3r and the servo is a savox digital servo. Set the frame rate on the radio to 5.5ms.

Anyway with no steering input its silent, but trying to hold a bit of lock, it sounds like a dot matrix printer or possibly something shorting!!! Is that just the servo making millions of tiny adjustments and ok? never had a digital servo before...