Is there an error in the documentation for SPECTRUM.MTM function example in Signal Processing Toolbox 6.2.1 (R14SP1)?

I open the documentation for the SPECTRUM.MTM function in the Signal Processing Toolbox by typing

doc spectrum.mtm

at the MATLAB command window.

I try the following example that is mentioned in the documentation.

Fs=1000;

t=0:1/Fs:.3;

x=cos(2*pi*t*200)+randn(size(t));

[e,v]=dpss(length(x),3.5);

Hs=spectrum.mtm(e,v);

psd(Hs,x,Fs)

Rather than receiving the plot with the Power Spectral Density, I receive the following error

 ??? Error using ==> spectrum.abstractspectrum.psd

 Invalid Parameter/Value pairs.

Answer 1

[MathWorks Support Team]

This bug has been fixed in Release 14 Service Pack 2 (R14SP2). For previous releases, please read below for any possible workarounds:

We have verified that there is an error in the documentation for SPECTRUM.MTM function in the Signal Processing Toolbox 2.6.1 (R14SP1). The following code produces the expected result.

Fs=1000;

t=0:1/Fs:.3;

x=cos(2*pi*t*200)+randn(size(t));

[e,v]=dpss(length(x),3.5);

Hs=spectrum.mtm(e,v);

psd(Hs,x,'Fs',Fs);        %--->Change from documentation is here.