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mux2
- 二进制数据或者频率信号选择器，判决时钟满足低频条件-binary data or frequency signal selectors that the judgment low-frequency clock to meet conditions
D_f_apparatus
- 频率测量和周期测量的基本方法是采用以固定时钟作为参考时钟，分别测量单个周期的计数为周期，单位时间的计数为频率。但是由于被测信号的频率不同，测量精度会发生变化，采用低频测量周期，高频测量频率，然后分别求倒数，便可得到对应的频率和周期-frequency measurement and measurement cycle is the basic method used to a fixed clock as a reference clock, measured single cycle to c
mnxhjc
- 本实验用DA转换＋比较器的方法对外界模拟信号进行检测，同时这种联合装置加上CPLD可以代替低频AD转换器的功能。-this experiment + DA conversion method of comparison to the outside world analog signal detection, while such joint CPLD devices can be replaced with low-frequency AD converter functions.
lowfrequencyphasemeasurement
- 原创代码--绝对值得下载 低频相位测量原代码， 测量精度可到10^-6次方，测量范围1hZ-30M -Original code- definitely worth downloading the original source of low-frequency phase measurement, the measurement accuracy can be 10 ^-6 power, range 1hZ-30M
bei
- 应用VHDL语言写的倍频器，通过对高频信号的分频得到较低频率信号的倍频-Applications written in VHDL multiplier, high-frequency signals through low frequency signal divided by the frequency
pinglvji
- 做的等精度频率计，采用等精度测量原理，即利用双计数器“相关计数”和“硬件同步分频”实现高低频率的等精度的测量。用FPGA实现频率测量、周期测量、时间间隔测量、相位测量及脉冲宽度的测量。所有的测量功能都由VHDL语言编程实现。-I do other precision frequency meter, use and other precision measuring principle, namely the use of dual-counter " related counts&qu
dds
- 使用VHDL硬件描述语言实现了直接频率合成器的制作，并在Altera公司的CycloneII上得到实现，验证了代码的正确性。用户操作可以参照程序中的说明，请使用QuartusII6.0以上版本打开，低版本打开时会有错误提示-Using VHDL hardware descr iption language to achieve a direct frequency synthesizer production, and Altera s CycloneII be realized, to ver
frequency
- 一种等精度的频率计，同时适合高频和低频，误差小。-A precision frequency meter, etc. At the same time, suitable high-frequency and low frequency, the error small.
LF_therapy
- low frequency therapy system control VHDL code
ddsphase
- 低频数字相位测量仪仿真的软件部分，是由VHDL语言设计-Low-frequency digital phase-measuring instrument simulation software is designed by VHDL language
HDB3encoder
- 数字基带信号的传输是数字通信系统的重要组成部分。在数字通信中，有些场合可不经过载波调制和解调过程，而对基带信号进行直接传输。采用AMI码的信号交替反转，有可能出现四连零现象，这不利于接收端的定时信号提取。而HDB3码因其无直流成份、低频成份少和连0个数最多不超过三个等特点，而对定时信号的恢复十分有利，并已成为CCITT协会推荐使用的基带传输码型之一。为此，本文利用VHDL语言对数据传输系统中的HDB3编码器进行了设计。-Digital baseband signal transmission i
p2s
- 并串转换器：将并行输入的信号以串行方式输出，这里要注意需先对时钟进行分频，用得到的低频信号控制时序，有利于观察结果（可以通过L灯观察结果）-And series converter: the input signal in parallel to serial output, where attention should be paid to the need to carry out first clock frequency, low-frequency signals received b
LowFreCounter
- 实现对低频信号进行等精度测量的频率计verilog hdl代码-Realization of low-frequency signals, such as precision measurement of the frequency code verilog hdl
wtut_ver
- DCM supports two frequency modes for the DLL. By default, the DLL_FREQUENCY_MODE attribute is set to Low and the frequency of the clock signal at the CLKIN input must be in the Low (DLL_CLKIN_MIN_LF to DLL_CLKIN_MAX_LF) frequency range (MHz). S
hdb
- 数字基带信号的传输是数字通信系统的重要组成部分。在数字通信中，有些场合可不经过载波调制和解调过程，而对基带信号进行直接传输。采用AMI码的信号交替反转，有可能出现四连零现象，这不利于接收端的定时信号提取。而HDB3码因其无直流成份、低频成份少和连0个数最多不超过三个等特点，而对定时信号的恢复十分有利，并已成为CCITT协会推荐使用的基带传输码型之一。为此，本文利用VHDL语言对数据传输系统中的HDB3编码器进行了设计。 基于达到达到达到的信号发生器的源程序-Digital baseband
freq
- 应用VHDL语言设计低频数字频率计，选择测频法方案，主要是控制电路，由其产生闸门、清零和锁存等信号。-VHDL, design low frequency digital frequency meter, select the frequency method to program, mainly the control circuit, produced by the gate and the latch so clear signal.
frequency-measuring
- 通过AD采样测量频率，输出到数码管显示，测量低频效果并不好-Measured by AD sampling frequency, the output to a digital display, measuring low-frequency effect is not good
low-frequency-signal-generator
- 实现基于单片机的低频信号发生器，程序完整，参考性好-MCU-based low-frequency signal generator
frequency-digital-phase-measuring-
- 低频数字式相位测量仪，数码管显示相位差，精度为0.1-Low frequency digital phase measuring instrument, digital pipe display phase difference
SPWM
- 单片机模拟输出spwm波，可实现低频正弦波的发生-Microcontroller analog output spwm wave, the occurrence of low frequency sine wave