Standard Test Methods for
DC Resistance or Conductance of Insulating Materials1
1.1 These test methods cover direct-current procedures for
the measurement of dc insulation resistance, volume resistance,
and surface resistance. From such measurements and the
geometric dimensions of specimen and electrodes, both volume
and surface resistivity of electrical insulating materials
can be calculated, as well as the corresponding conductances
and conductivities.
1.2 These test methods are not suitable f
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该系统基于GB3442-82标准测量运算放大器参数的原理，以单片机和FPGA组成的最小系统为控制核心，实现了测量集成运放参数的功能。通过程控放大和精密调整放大，系统不仅完成了VIO、IIO、AVD、KCMR的测量（误差分别为1%和±2dB），还实现了BWG的测量和自动量程转换功能，并由键盘和显示器等人机交互界面，准确显示测量信息，扩展了触摸屏控制和打印功能。
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人工智人-家居设计-基于IEC61850智能站自动化继电保护测试仪的研制.pdf
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