了解你的被测试装置被测试装置（DUT）的性能会显著影响射频测量。，温度会影响稳定性，并因此与可重复性密切相关。许多射频器件和射频仪器没有对温度变化的内部补偿。它们必须在稳定的温度下工作以使温度漂移引起的测量误差。当前的环境（，空调循环的开启与关闭，覆盖物和面板的移除或增加，处于户外或室内，以及是否接近热源）会有很大影响。需要注意适当的预热时间、被测试装置的冷却需求和周边的环境以确保温度稳定性。
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PV023R1K1T1WMM1
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PV032R1K4T1NMMC
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PV032R1K1JHNMMC
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PV032R9K1T1NFWS
仪器仪表的机壳，尤其像控制柜、操作台、电源柜等，机壳都要用扁钢连接到一起。仪表工作电源如24V负端和仪表信号地、计算机输入输出信号地等相连要构成等电位。本安地、安全栅、隔离栅、安全器等接地也要考虑仪表信号参考点连接时是否构成等电位。不能忽视智能仪器仪表的电源防雷保护。为智能仪器仪表安装防浪涌保护系统或者电涌保护器以确保仪器仪表不会过耐压极限。电涌保护器可以在雷暴天气感应到雷浪涌时，将过载电流汇入大地。
