i'm used Voltage Regulator for equipment & linear power supply for ptz.
i've also tried to to check the twisted pair cable, the resistance is 15 ohm from control room to camera's location. The ptz working intermitent. we need to power off and going back on. when directly tested the ptz using sort distance cable with 4ohm resistance the ptz is working fine, but more than 4 ohm resistance (over 15ft) the ptz working intermintent. What is problem actually the ptz or twisted pair? What is solution to rectified the problem?