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Keysight CXG, EXG, and MXG X-Series Signal Generators Programming Guide 281

Creating and Downloading Waveform Files

Programming Examples

char s[20];

char cmd[200];

// The E4438C, E8267C and E8267D accept the E443xB format.

// so we can use this next section on any of these signal

generators.

// However the E443xB format only uses 14 bits.

bytesToSend = numsamples*2; // calculate the number of

bytes

sprintf(s, “%d”, bytesToSend); // create a string s with that

number of bytes

// The SCPI command has four parts.

// Part 1 = :MEM:DATA “filename”,

// Part 2 = length of Part 3 when written to a string

// Part 3 = length of the data in bytes. This is in s from

above.

// Part 4 = the buffer of data

// Build parts 1, 2, and 3 for the I data.

sprintf(cmd, “:MEM:DATA \”ARBI:FILE1\”, #%d%d”, strlen(s),

bytesToSend);

// Send parts 1, 2, and 3

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

// Send part 4. Be careful to use the correct command here. In

many

// programming languages, there are two methods to send SCPI

commands:

// Method 1 = stop at the first ‘0’ in the data

// Method 2 = send a fixed number of bytes, ignoring ‘0’ in the

data.

// You must find and use the correct command for Method 2.

iwrite(id, ibuffer, bytesToSend, 0, 0);

// Send a terminating carriage return

iwrite(id, “\n”, 1, 1, 0);

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