astrouk1

Hi All, I have an LG LVC-M513HP camera module that has connections: Ground, TxD & RxD (for RS232C TTL Level). My DVR has a standard RS485 connection for PTZ control. The connection is only required to control the zoom on the camera. Does anyone have any idea on the best way to convert this signal? I have seen TTL-RS232 and RS232-RS485 adaptors, would both of these together solve the problem? Any assistance much appreciated. Astrouk1.