AC VOLTAGE CURRENT STANDARD 交流电压电流标准 2558 厂商:日本横河 详细参数(PDF文件) [看PDF文件需安装软件 Adobe Readerr] - 100mV , 1-1000 V in 6 ranges;100mA ,1-50 A in 4 ranges - Frequency ranges 50, 60, 400 Hz or 40-500 Hz continuously variable - Overvoltage and overcurrent protection - Sweep mode - Deviation readout - Output divider 0-15