Downloading and Using Files
ARB Waveform Data Downloads
Chapter 4 159
Program Comments
10: Program file name
20: Sets the number of points in the waveform.
30: Allocates integer data array for I and Q waveform points.
40: Sets HP BASIC to use degrees for cosine and sine functions.
50: Sets up first loop for I waveform points.
60: Calculate and interleave I waveform points.
70: End of loop
80 Sets up second loop for Q waveform points.
90: Calculate and interleave Q waveform points.
100: End of loop.
120: Calculates number of bytes in IQ waveform.
130: Opens an I/O path to the signal generator using GPIB. 7 is the address of
the GPIB card in the computer, and 19 is the address of the signal
generator. This I/O path is used to send ASCII data to the signal generator.
140: Opens an I/O path for sending binary data to the signal generator.
150: Creates an ASCII string representation of the number of bytes in the
waveform.
160 to 170: Finds the number of digits in Nbytes.
190: Sends the first part of the SCPI command, MEM:DATA along with the
name of the file, data_file, that will receive the waveform data. The name,
data_file, will appear in the signal generator’s memory catalog.
200 to 210: Sends the rest of the ASCII header.
230: Sends the binary data. Note that ESGb is the binary I/O path.
240: Sends an End-of-Line to terminate the transmission.
250 to 260: Closes the connections to the signal generator.
290: End the program.
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