通过232-485转换卡与计算机串口通讯，进而控制PELCO解码器，可以脱离矩阵或者专用键盘控制云台。-passed 232-485 conversion cards and computer serial communications, and then the PELCO decoders, will be freed from the matrix or special keyboard control platforms.

pelco 9750矩阵协议。安防软件中常用到的协议。-pelco 9750 agreement matrix. Security software commonly used in the agreement.

pelco 矩阵控制,通过rs485/rs232发送控制指令，控制摄像机，监视器的切换-pelco matrix control