National Instruments 320571-01 用户手册

Generates a uniformly distributed
pseudorandom pattern whose values are in
the range [-a:a], where a is the absolute
value of amplitude.   The pseudorandom
sequence is generated using a modified
version of the Very-Long-Cycle random
number generator algorithm.

amplitude defaults to 1.0.

seed < 65536.0.  If seed > 0.0, the generated noise will be the same in repeated invocations if the seed
value does not change.  If seed 

≤

 0.0, the VI generates a random value to use as the seed, and the noise

differs in repeated invocations although the value in seed does not change.  seed defaults to 0.0.

White Noise in is a DSP Handle Cluster that indicates the memory buffer on the DSP board that will
contain the output white noise.

White Noise out is a DSP Handle Cluster that is identical to White Noise in, but with the generated
pattern already stored in the memory buffer on the DSP board.  The largest white noise signal that can be
generated depends upon the amount of memory on your DSP board.

error in (no error) contains the error information from a previous VI.  If an error occurs, it is passed out
error out and no other calls are made.

error out contains the error information for this call.