Agilent Technologies E8267D PSG Instrukcja Obsługi Pobierz pdf (Strona 42)

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

Creating and Downloading Waveform Files

Downloading Waveform Data

For advanced programming languages, this section closely examines the code algorithm for

downloading I/Q waveform data by breaking the programming examples into functional parts and

explaining the code in generic terms. This is done to help you understand the code algorithm in

downloading the interleaved I/Q data, so you can leverage the concept into your programming

environment. While not discussed in this section, you may also save the data to a binary file and use

one of the download utilities to download the waveform data (see “Using the Download Utilities” on

page 46).

If you do not need the level of detail this section provides, you can find complete programming

examples in “Programming Examples” on page 50. Prior to downloading the I/Q data, ensure that it

conforms to the data requirements shown on page 3. To learn about I/Q data for the signal generator,

see “Understanding Waveform Data” on page 3. For creating waveform data, see “Creating Waveform

Data” on page 31.

NOTE To avoid overwriting the current waveform in volatile memory, before downloading files into

volatile memory (WFM1), change the file name or turn off the ARB. For more information, on

manually turning off the ARB, refer to the User’s Guide.

To turn off the ARB remotely, send: :SOURce:RADio:ARB:STATe OFF.

Using Simulation Software

This procedure uses a complex data array created in MATLAB and uses the Agilent Waveform

Download Assistant to download the data. To obtain the Agilent Waveform Download Assistant, see

“Using the Download Utilities” on page 46.

There are two steps in the process of downloading an I/Q waveform:

1. Open a connection session.

2. Download the I/Q data.

1. Open a connection session with the signal generator.

The following code establishes a LAN connection with the signal generator, sends the IEEE SCPI

command *idn?, and if the connection fails, displays an error message.

Line Code—Open a Connection Session

io = agt_newconnection('tcpip','IP address');

%io = agt_newconnection('gpib',<primary address>,<secondary address>);

[status,status_description,query_result] = agt_query(io,'*idn?');

if status == -1

display ‘fail to connect to the signal generator’;

end;

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Agilent Technologies E8267D PSG Instrukcja Obsługi Strona 42