然而，两组通道必须被用于进行开路和短路校准，所以，系统最多仅能测试8个电容器。
However, two sets of channels should be used to perform open and short calibration, so the system can only test up to eight capacitors.
对四端对阻抗测量仪在其使用频段内进行校准，须确定四端对标准电容器的频率特性。
The calibration of four-terminal-pair(4TP) impedance meters at their working frequencies requires the knowledge of 4TP standard capacitor frequency characteristic.
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