FW1-2-1-D  模拟频率转换器  接收到的模拟信号转换成数字信号

FW1-2-1-D是德国LEg公司生产的一款高达100KHz的模拟频率转换器。

模拟频率转换器是一种可以将模拟频率信号转换成数字信号的设备。

模拟频率转换器通常由两部分组成，一部分是频率转换器，另一部分是滤波器。频率转换器的主要作用是将输入的模拟频率信号转换成数字信号，而滤波器的作用则是去除噪声和干扰，提高信号的纯净度和稳定性。

FW1-2-1-D模拟频率转换器广泛应用于各种领域，如通信、雷达、声纳、电子对抗等。在通信领域中，模拟频率转换器可以将接收到的模拟信号转换成数字信号，然后进行解调和解码，最终得到原始的信息数据。在雷达和声纳领域中，模拟频率转换器可以将接收到的模拟信号转换成数字信号，然后进行信号处理和分析，最终得到目标的位置和速度等信息。

模拟信号和数字信号的相互转换方法如下：

模拟信号转数字信号：

采样：FW1-2-1-D模拟信号时间和幅度均连续。数字化时首先被等间隔地采样，完成时间离散化，但在幅度上还是连续的。经过采样处理之后，模拟信号变成了离散时间信号。

量化：FW1-2-1-D每个信号采样的幅度以某个最小数量单位的整数倍来度量。这时信号不仅在时间上不再连续，在幅度上也不连续了。经过量化处理之后，离散时间信号变成了数字信号。

编码：FW1-2-1-D将数字信号编码成B位长度的二进制字。虽然在量化之后信号已经变成了数字信号，但二进制字的表示方法有很多。ADC还要根据精度、动态范围及实现成本等多个角度选择所需的二进制编码方式。

数字信号转模拟信号：与模拟信号转数字信号的过程相反，首先经过解码器解码，再通过数模转换器转换。

FW1-2-1-D  模拟频率转换器  接收到的模拟信号转换成数字信号

The FW1-2-1-D is an analog frequency converter up to 100KHz produced by the German LEg company.

Analog frequency converter is a device that can convert analog frequency signals into digital signals.

An analog frequency converter usually consists of two parts, one is a frequency converter and the other is a filter. The main function of the frequency converter is to convert the input analog frequency signal into a digital signal, and the function of the filter is to remove noise and interference, and improve the purity and stability of the signal.

FW1-2-1-D analog frequency converters are widely used in various fields, such as communications, radar, sonar, electronic countermeasures, etc. In the field of communication, the analog frequency converter can convert the received analog signal into a digital signal, and then demodulate and decode, and finally get the original information data. In the field of radar and sonar, the analog frequency converter can convert the received analog signal into a digital signal, and then carry out signal processing and analysis, and finally get the location and speed of the target information.

The conversion method of analog signal and digital signal is as follows:

Analog signal to digital signal:

Sampling: FW1-2-1-D analog signal time and amplitude are continuous. When digitizing, it is first sampled at equal intervals to complete the time discretization, but it is still continuous in amplitude. After sampling processing, the analog signal becomes a discrete time signal.

Quantization: FW1-2-1-D The amplitude of each signal sample is measured as an integer multiple of some minimum quantity unit. The signal is no longer continuous not only in time, but also in amplitude. After quantization, the discrete-time signal becomes a digital signal.

Coding: FW1-2-1-D encodes the digital signal into B-bit length binary words. Although the signal has become a digital signal after quantization, there are many ways to represent binary words. ADC also selects the desired binary encoding based on multiple perspectives such as accuracy, dynamic range and implementation cost.

Digital signal to analog signal: contrary to the process of analog signal to digital signal, it is first decoded by a decoder and then converted by a digital-to-analog converter.