Nikolić Stanko N, Batić Viktor, Panić Bratimir, Jelenković Branislav M
Institute of Physics, University of Belgrade, Pregrevica 118, 11080 Belgrade, Serbia.
Rev Sci Instrum. 2013 Jun;84(6):063108. doi: 10.1063/1.4811147.
We present a field-programmable gate array (FPGA) based device that simultaneously generates two arbitrary analog voltage signals with the maximum sample rate of 1.25 MHz and acquires two analog voltage signals with the maximum sample rate of 2.5 MHz. All signals are synchronized with internal FPGA clock. The personal computer application developed for controlling and communicating with FPGA chip provides the shaping of the output signals by mathematical expressions and real-time monitoring of the input signals. The main advantages of FPGA based digital-to-analog and analog-to-digital cards are high speed, rapid reconfigurability, friendly user interface, and low cost. We use this module in slow light and storage of light experiments performed in Rb buffer gas cell.
我们展示了一种基于现场可编程门阵列（FPGA）的设备，该设备可同时生成两个任意模拟电压信号，最大采样率为1.25 MHz，并采集两个最大采样率为2.5 MHz的模拟电压信号。所有信号均与FPGA内部时钟同步。为控制FPGA芯片并与之通信而开发的个人计算机应用程序可通过数学表达式对输出信号进行整形，并对输入信号进行实时监测。基于FPGA的数模和模数卡的主要优点是速度快、可快速重新配置、用户界面友好且成本低。我们在铷缓冲气体池中进行的慢光和光存储实验中使用了该模块。
