开关组 switch block
- 扫描仪主机的背板可连接每个开的相应开关组。
The backplane of the scanner mainframe will connect the appropriate banks of each card. - 每组开关的第二个通道被连接到一个跳线,以便进行短路校准。
The second channel of each bank is connected to a jumper to allow short-circuit calibration. - 第二组开关(7158型)在经过合适的平稳时间后将每个电容器连接到皮安计。
A second set of switches (on the Model 7158) connects each capacitor to the picoammeter after a suitable soak period.
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