仪表放大器是一种具有差分输入和相对参考端单端输出的闭环增益单元。大多数情况下，仪表放大器的两个输入端阻抗平衡并且阻值很高，典型值≥109Ω。其输入偏置电流也应很低，典型值为1nA至50nA。与运算放大器一样，其输出阻抗很低，在低频段通常仅有几毫欧(mΩ)。运算放大器的闭环增益是由其反向输入端和输出端之间连接的外部电阻决定。与放大器不同的是，仪表放大器使用一个内部反馈电阻网络，它与其信号输入端隔离。对仪表放大器的两个差分输入端施加输入信号，其增益既可由内部预置，也可由用户通过引脚连接一个内部或者外部增益电阻器设置，该增益电阻器也与信号输入端隔离。
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布局助手甚至可以帮助我们在关闭框架时清理工作区。如果空间不够，可以简单地添加另一个分析选项卡（比如在Excel工作簿中添加一个选项卡），然后可以重命名文件、框架和选项卡。*让人感觉舒服的是，一旦大家花了很多的时间制作了我们想要的布局，以及工作区，我们就可以很方便的保存它并在稍后再次打开它。保存工作区可以保存所有的内容，而不仅仅是布局。这包括打开的文件、调色板和缩放比例，以及所有的分析模块。灵活的分析工具齐全的测量工具有助于加深用户对热数据的认识。
