GDS-800 Series数字示波器操作手册GDS-806C 60MHz, 双信道, 彩色LCD数字示波器GDS-806S 60MHz, 双通道, 单色LCD数字示波器GDS-810C 100MHz, 双信道, 彩色LCD数字示波器GDS-810S 100MHz, 双通道, 单色LCD数字示波器GDS-820C 150MHz, 双信道, 彩色LCD数字示波器GDS-820S 150MHz, 双通道, 单色LCD数字示波器GDS-840C 250MHz, 双信道, 彩色LCD数字示波器GDS-840S 250MHz, 双通道, 单色LCD数字示波器