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嗨论坛我正在使用具有WLAN选项的EXA频谱分析仪,并尝试在WLAN模式下设置电缆损耗dB偏移。
我的设置是我有EXS频谱分析仪的WLAN设备和1M电缆,因此我想将外部损耗设置为1 dB,因此我的测量值代表了我的WLAN设备的实际传输功率。 在SA模式下,可以选择设置外部电缆偏移(Ref Lvl OFFset),但在WLAN模式下,这似乎不是一种选择。 在研究手册时,在SA模式下似乎只有一个选项。 有没有人知道如何在WLAN模式下设置外部丢失,如果是,也可以知道GPIB命令。 BR Soren B 以上来自于谷歌翻译 以下为原文 Hi Forum I’m using a EXA Spectrum analyzer with WLAN option and is trying to set a Cable loss dB Offset in the WLAN mode. My setup is that I have WLAN device and 1M of cable to the EXA spectrum analyzer, so I want to set my external loss to 1 dB so my measurements represent the actual transmitted power from my WLAN device. In SA mode there is an option to set the external cable Offset(Ref Lvl OFFset) but in WLAN mode this seems not an option. When study the manual there seems only an option for this in SA mode. Does anyone know how to set the external loss in WLAN mode and if yes the GPIB command as well.? BR Soren B |
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嗨Soren - 您想要使用的功能是外部增益,可在输入/输出菜单下找到。
只需为有线设备(如电缆)输入负值即可。 在SA模式中,实际上有三种方法可以完成任务。 您可以使用Ref Level Offset,这是我们在分析仪中使用了30多年的功能,或者您可以使用外部(前置放大器)增益,或者您可以使用更正。 外部增益和校正都可在输入/输出菜单中找到。 更正确实需要您拥有N9060A-3FP的许可证。 关于校正功能的好处是您可以输入校正作为频率的函数。 如果您在很宽的频率范围内进行测量,并且正在校正的设备在该范围内不平坦,则这是很好的。 外部增益和参考电平偏移功能是单值校正; 所有频率都将应用相同的校正。 在许多面向通信的应用中,例如GSM / EDGE和W-CDMA,外部增益下的前置放大器增益设置被MS(移动台)和BTS(基站发送台)设置所取代。 这允许您在测量这两种类型的设备时需要应用不同的更正。 问候 - 以上来自于谷歌翻译 以下为原文 Hi Soren - The feature you want to use is External Gain, which is found under the Input/Output menu. Simply enter a negative value for a lossy device such as your cable. In SA mode, there are actually THREE ways to accomplish the task. You can use Ref Level Offset, which is a feature we have had in our analyzers for over 30 years, or you can use External (Preamp) Gain, or you can use Corrections. Both External Gain and Corrections are found in the Input/Output menu. Corrections does require that you have a license for N9060A-3FP. The nice thing about the Corrections feature is that you can enter a correction as a function of frequency. This is good if you are making measurements over a wide frequency range and the device for which you are correcting is not flat over that range. The External Gain and Ref Level Offset features are single-value corrections; the same correction will be applied at all frequencies. In many of the communications-oriented applications, such as GSM/EDGE and W-CDMA, the Preamp Gain setting under External Gain is replaced with MS (mobile station) and BTS (base transmitting station) settings. This allows for the situation where you need to apply different corrections when measuring these two types of devices. Regards - |
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