用labview生成单位脉冲信号

1. 直接用仿真信号就行了，频率可以自己设定的，很方便。    

2. 这个可以用555定时器，也可以用VI，简单成本底。

3. 购买专业的信号发生器，直接了当。
   

Impulse Pattern (Not in Base Package)
Generates an array containing an impulse pattern.
samples is the number of samples of the Impulse Pattern. samples must be greater than delay. The default is 128. If samples is negative or zero, the VI sets Impulse Pattern to an empty array and returns an error.
amplitude is the amplitude of Impulse Pattern. The default is 1.0.
delay is the index within Impulse Pattern at which the impulse occurs. delay must be greater than or equal to 0. If delay is less than zero, or greater than or equal to the number of samples, the VI sets Impulse Pattern to zero and returns an error.
Impulse Pattern is the output array containing the impulse pattern. The largest Impulse Pattern the VI can generate depends on the amount of memory in your system and is theoretically limited to