Error using ==> fopen

I am trying to control Agilent 33250a waveform generator whit this script:

h=visa('agilent',SerialAddr);
 set(h,'Baud',115200,'InputBufferSize',200,'OutputBufferSize',2*7000);
fopen(h);
fprintf(h,'OUTP OFF');
fprintf(h,'OUTP:LOAD 50');

I am getting this Error:

??? Error using ==> instrument/fopen
Error using ==> fopen
VISA: DataTerminalReady could not be set to the specified value.

on another computer it works fine,what could be the problem?

Tanx

Mudonroad

[Ankit Desai]

Could you try out the same using serial port object?

s = serial(<port name>); %Example: 'COM1'

set(s,'Baudrate',115200,'InputBufferSize',200,'OutputBufferSize',2*7000);

fopen(s);

fprintf(s,'OUTP OFF');

fprintf(s,'OUTP:LOAD 50');

Does it give the same error?