Agilent Technologies E8257D PSG Instrukcja Użytkownika Pobierz pdf (Strona 283)

Agilent N516xA, N518xA, E8663B, E44x8C, and E82x7D Signal Generators Programming Guide 271

Creating and Downloading Waveform Files

Programming Examples

Creating and Downloading a Pulse

NOTE This section applies only to the Agilent MXG and the PSG.

For the Agilent MXG, the maximum frequency is 6 GHz, and the pulsepat.m program’s

SOURce:FREQuency 20000000000 value must be changed as required in the following

programs. For more frequency information, refer to the signal generator’s Data Sheet.

On the documentation CD, this programming example’s name is “pulsepat.m.”

This MATLAB programming example performs the following functions:

• I and Q data creation for 10 pulses

•marker file creation

• data scaling

• downloading using Agilent Waveform Download Assistant functions (see “Using the Download

Utilities” on page 242 for more information)

% Script file: pulsepat.m

% Purpose:

%To calculate and download an arbitrary waveform file that simulates a

%simple antenna scan pulse pattern to the Agilent MXG/PSG vector signal generator.

% Define Variables:

% n - - counting variable (no units)

% t -- time (seconds)

% rise - - raised cosine pulse rise–time definition (samples)

% on - - pulse on–time definition (samples)

% fall - - raised cosine pulse fall–time definition (samples)

% i - - in–phase modulation signal

% q - - quadrature modulation signal

n=4; % defines the number of points in the rise–time and fall–time

t=–1:2/n:1–2/n; % number of points translated to time

rise=(1+sin(t*pi/2))/2; % defines the pulse rise–time shape

on=ones(1,120); % defines the pulse on–time characteristics

fall=(1+sin(–t*pi/2))/2; % defines the pulse fall–time shape

off=zeros(1,896); % defines the pulse off–time characteristics

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Agilent Technologies E8257D PSG Instrukcja Użytkownika Strona 283