Whats does Delay input by a fixed number of samples means in the delay block in simulink library?

I am trying to introduce a delay in a modulated FSK baseband signal. Say for eg: The frame based output of the modulator(in other words the input to the delay block) is 1600 by 1 matrix and i introduce a delay of delay length 1. Is the block delaying the whole frame or only the sample in the frame? note that the input processing is set to columns as channels(frame based).