2.1使用条件及产品规格
2.1.1 环境温度:10℃--30℃
2.1.2 相对湿度:30℃(20—75)?GRH
2.1.3 大气压强:86KPa—106KPa
2.1.4 交流供电电压:220V±10?G
2.1.5 交流供电频率:50Hz±5?G
2.1.6 外电磁场:应避免
2.1.7 通风:应较好
2.1.8 阳光照射:应避免直射
2.1.9 外型尺寸:440mm×166mm×400mm
2.1.10 仪器重量:16kg
2.2 技术指标
2.2.1 Vc电压精度如表1
表1
标称值 误 差 负 载 电 流
0.1V ≤±(0.3%+400uV) ≤0.2mA
0.2V ≤±(0.3%+600uV) ≤0.3mA
0.5V ≤±(0.3%+1mV) ≤0.4mA
1V ≤±(0.3%+1mV) ≤ 0.5mA
2V ≤±(0.3%+2mV) ≤1mA
5V ≤±(0.3%+5mV) ≤2mA
10V ≤±(0.3%+10mV) ≤5mA
20V ≤±(0.3%+20mV) ≤5mA
50V ≤±(0.3%+50mV) ≤5mA
100V ≤±(0.3%+100mV) ≤5mA
200V ≤±(0.3%+200mV) ≤5mA
500V ≤±(0.3%+500mV) ≤1mA
1000V ≤±(0.3%+1V) ≤1mA
2.2.2 VB电压精度如表2
表2
标称值 误 差 负 载 电 流
0.1V ≤±(0.3%+400uV) ≤0.2mV
0.2V ≤±(0.3%+600uV) ≤0.3mV
0.5V ≤±(0.3%+1mV) ≤0.4mV
1V ≤±(0.3%+1mV) ≤0.5mV
2V ≤±(0.3%+1mV) ≤1mV
5V ≤±(0.3%+5mV) ≤2mV
10V ≤±(0.3%+10mV) ≤5mV
20V ≤±(0.3%+20mV) ≤5mV
2.2.3 Y校准电压精度如表3
表3
标称值 误 差 负 载 电 流
0.1V ≤±(0.3%+200uV) ≤0.2mA
0.2V ≤±(0.3%+200uV) ≤0.2mA
0.3V ≤±(0.3%+300uV) ≤0.2mA
0.4V ≤±(0.3%+400uV) ≤0.2mA
0.5V ≤±(0.3%+500uV) ≤0.2mA
0.6V ≤±(0.3%+600uV) ≤0.2mA
0.7V ≤±(0.3%+700uV) ≤0.2mA
0.8V ≤±(0.3%+800uV) ≤0.2mA
0.9V ≤±(0.3%+900uV) ≤0.2mA
1V ≤±(0.3%+1mV) ≤0.2mA
2.2.4 Ic电流精度如表4
表4
标称值 误 差 负 载 电 压
10uA ≤±(0.3%+20nA) ≤2V
20uA ≤±(0.3%+40nA) ≤2V
50uA ≤±(0.3%+100nA) ≤2V
100uA ≤±(0.3%+200nA) ≤2V
200uA ≤±(0.3%+400nA) ≤2V
500uA ≤±(0.3%+1uA) ≤2V
1mA ≤±(0.3%+2uA) ≤5V
2mA ≤±(0.3%+2uA) ≤5V
5mA ≤±(0.3%+5uA) ≤5V
10mA ≤±(0.3%+20uA) ≤5V
20mA ≤±(0.3%+20uA) ≤5V
50mA ≤±(0.3%+50uA) ≤5V
100mA ≤±(0.3%+200uA) ≤5V
200mA ≤±(0.3%+200uA) ≤5V
500mA ≤±(0.3%+500uA) ≤5V
1A ≤±(0.3%+2mA) ≤2V
2A ≤±(0.3%+4mA) ≤2V
5A ≤±(0.3%+20mA) ≤2V
10A ≤±(0.3%+40mA) ≤2V
2.2.5 阶梯电压变换精度如表5
表5
标称值 误 差
2V/阶 £ ±(0.3%+2mV/阶)
1V/阶 £ ±(0.3%+1mV/阶)
0.5V/阶 £ ±(0.3%+0.5mV/阶)
0.2V/阶 £ ±(0.3%+0.2mV/阶)
0.1V/阶 £ ±(0.3%+0.1mV/阶)
50mV/阶 £ ±(0.3%+0.1mV/阶)
20mV/阶 £ ±(0.3%+40uV/阶)
10mV/阶 £ ±(0.3%+40uV/阶)
2.2.6 阶梯电流变换精度如表6
表6
标称值 误 差
1uA/阶 £ ±(0.3%+5nA阶)
2uA/阶 £ ±(0.3%+8nA/阶)
5uA/阶 £ ±(0.3%+10nA/阶)
10uA/阶 £ ±(0.3%+20nA/阶)
20uA/阶 £ ±(0.3%+40nA/阶)
50uA/阶 £ ±(0.3%+0.1uA/阶)
0.1uA/阶 £ ±(0.3%+0.2uA/阶)
0.2uA/阶 £ ±(0.3%+0.4uA/阶)
0.5uA/阶 £ ±(0.3%+1uA/阶)
1mA/阶 £ ±(0.3%+2uA/阶)
2mA/阶 £ ±(0.3%+4uA/阶)
5mA/阶 £ ±(0.3%+10uA/阶)
10mA/阶 £ ±(0.3%+20uA/阶)
20mA/阶 £ ±(0.3%+40uA/阶)
50mA/阶 £ ±(0.3%+0.2mA/阶)
100mA/阶 £ ±(0.3%+0.4mA/阶)
200mA/阶 £ ±(0.3%+0.8mA/阶)
2.2.7 偏差表显示偏差,共误差不大于被测档位标称值的±0.5%