PNA Series network analyzers require firmware revision 2.5 or higher.
PNA系列网络分析仪需要固件版本2.5或更高。
Generally the calibration of Vector Network Analyzers has been accomplished with mechanical standards.
通常情况下矢量网络分析仪的校准都是使用机械校准件来完成的。
Typical RF & uW instruments: signal generators, spectrum analyzers, network analyzers, power meters, receivers and so on;
典型的射频微波类测试仪表：信号源、频谱分析仪、网络分析仪、功率计、接收机等等；
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