Creating and Downloading User-Data Files

Pattern RAM (PRAM) Data Downloads (E4438C and E8267D)

:MEMory:DATA:PRAM:FILE:BLOCk <"file_name">,#ABC

<"file_name"> the file name as it will appear in the signal generator

#

indicates the start of the block data

A

the number of decimal digits present in B

B

a decimal number specifying the number of data bytes to follow in C

C

the PRAM file data in bytes

:MEMory:DATA:PRAM:FILE:BLOCk “my_file”,#324012%S!4&07#8g*Y9@7...

 

file_name

A B

C

my_file

the PRAM file name as it will appear in the signal generator’s WFM1

 

memory catalog

 

 

#

indicates the start of the block data

 

3

B has three decimal digits

 

 

240

240 bytes of data to follow in C

 

12%S!4&07#8g*Y9@7... the ASCII representation of some of the block data (binary data) downloaded to the signal generator, however not all ASCII values are printable

In actual use, the block data is not part of the command line as shown above, but instead resides in a binary file on the PC/UNIX. When the program executes the SCPI command, the command line notifies the signal generator that it is going to receive block data of the stated size, and to place the file in the signal generator file directory with the indicated name. Immediately following the command execution, the program downloads the binary file to the signal generator. This is shown in the following section, “Command Syntax in a Program Routine”

Command Syntax in a Program Routine

This section demonstrates the use of the download SPCI command within the confines of a C++ program routine. The following code sends the SCPI command and downloads a 240 byte PRAM file to the signal generator’s WFM1 (waveform) memory catalog. This program assumes that there is a char array, databuffer, that contains the 240 bytes of PRAM data and that the variable numbytes stores the length of the array.

Line

Code—Download PRAM File Data

1int bytesToSend;

2bytesToSend = numbytes;

3char s[4];

4char cmd[200];

5sprintf(s, "%d", bytesToSend);

6sprintf(cmd, ":MEM:DATA:PRAM:FILE:BLOCk \"FILE1\", #%d%d", strlen(s),bytesToSend);

7iwrite(id, cmd, strlen(cmd), 0, 0);

8iwrite(id, databuffer, bytesToSend, 0, 0);

9iwrite(id, "\n", 1, 1, 0);

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

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Agilent Technologies N5183A MXG MEMoryDATAPRAMFILEBLOCk myfile,#324012%S!4&07#8g*Y9@7, Command Syntax in a Program Routine

N5183A, N5183A MXG, E8663B, N5181A/82A specifications

Agilent Technologies is renowned for its innovative solutions in electronic test and measurement equipment. Among its offerings are several signal generators including the N5181A, N5182A, E8663B, and N5183A MXG. These models are distinguished not only by their performance but also by their versatility across various applications in communications, aerospace, and electronics.

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