回收N9912A安捷伦手持频谱分析仪

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回收N9912A安捷伦手持频谱分析仪
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回收N9912A安捷伦手持频谱分析仪
功率传感器测量值与频率
该特性允许立于功率传感器（接收器）频率来设置FieldFox源频率。用利用功率传感器(FOPS)进行频率偏移，扫频源和接收机的频率，以及两条轨迹。
彼此。偏移频率可以是负的、零的或正的。FOPS可以用来表征诸如混频器和转换器之类的器件的标量传输响应。
这个频率偏移能力对于在频率转换装置上测量转换损耗/增益是必要的，因为定义，DUT的输入和输出频率是不同的。FieldFox源刺激DUT和功率采用传感器作为测量接收器。
由于功率传感器本质上是宽带设备（不是频率选择性的），用户应该确保只有信号在功率传感器输入端存在令人感兴趣的，并且所有其他信号被适当地滤波。

源频率跨度等于接收机频率跨度。接收方扫描方向：正向（默认设置）或反向。
对于一些DUT，与源频率相比，输出频率可以向相反方向扫描。基本源、接收机和偏移频率之间的关系如下表所示。FieldFox分析仪包括确保快速测量设置的偏移计算

Power Sensor Measurements vs. Frequency
This feature allows the FieldFox source frequency to be set independently from the power sensor (receiver) frequency. With
frequency-offset using power sensor (FOPS), the frequency of both the source and receiver are swept, and the two track
each other. The offset frequency can be negative, zero, or positive.
FOPS can be used to characterize the scalar transmission response of devices such as mixers and converters. This
frequency-offset capability is necessary for conversion loss/gain measurements on frequency-translating devices, since by
definition, the input and output frequencies of the DUT are different. The FieldFox source stimulates the DUT and the power
sensor is used as the measurement receiver.
Since power sensors are inherently broadband devices (not frequency-selective), the user should ensure that only the signal
of interest is present at the power sensor input and that all others signals are filtered appropriately.

Source frequency span must be equal to receiver frequency span.
Receiver sweep direction: forward (default setting) or reverse.
For some DUTs, the output frequency may sweep in a reverse direction, as compared to the source frequency. The basic
relationships between the source, receiver and offset frequencies are shown in the table below. The FieldFox analyzer
includes an offset calculator that ensures a fast measurement setup

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