仪器的输入端子之间用一个“短路头”连接，其输出到仪表的输入即为零，也可使用仪器前面板上的消零控制或者用计算机控制来置零。
A short circuit can be connected across the input terminals and the output can then be set to zero, either by front panel zero controls or by computer control.
当需要对面板进行维修时，将面板翻起，用支杆将面板支起，防止其滑落，然后即可进行电路仪表元件的检测维修和更换。
When the panel needs maintaining, the panel is turned up and is supported by the support rod so as not to slide off, and then the circuit instrument elements can be detected, maintained and replaced.
当需要对面板进行维修时，将面板翻起，用支杆将面板支起，防止其滑落，然后即可进行电路仪表元件的检测维修和更换。
When the panel needs maintaining, the panel is turned up and is supported by the support rod so as not to slide off, and then the circuit instrument elements can be detected, maintained and replaced.
应用推荐