IT7963EP-350-315350 V315 A63 kVA0.01V/0.01A<0.1%+0.1%FS /<0.1%+0.2%FSUSB/CAN/LAN/数字I/O口,选配GPIB/模拟量&RS23215U IT7984EP-350-420350 V420 A84 kVA0.01V/0.01A<0.1%+0.1%FS /<0.1%+0.2%FSUSB/CAN/LAN/数字I/O口,选配GPIB/模拟量&RS23227U ...