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一、概述1.测量依据JJG598-1989《直流数字电流表检定规程》。2.测量环境条件环境温度为(20±1)℃,相对湿度为(60±15)%。3.测量标准直流标准电流源:6430型(亚fA程控源表)。测量范围:直流电流为1pA~100mA。1nA量程最大允许误差:±(0.050%×输出值+200fA)。10nA量程最大允许误差:±(0.050%×输出值+2pA)。
I. Overview 1. Measurement based on JJG598-1989 “DC digital ammeter verification procedures.” 2. Measurement of environmental conditions Ambient temperature (20 ± 1) ℃, relative humidity (60 ± 15)%. 3. Measurement standards DC standard current source: 6430 type (sub-fA program source table). Measuring range: DC current 1pA ~ 100mA. 1nA range maximum allowable error: ± (0.050% × output value + 200fA). 10nA range maximum allowable error: ± (0.050% × output value +2 pA).