Keysight E4428C ESG RF Programming Manual page 230

Creating and Downloading Waveform Files
Understanding Waveform Data
NOTE The signal generator can accept separate I and Q files created for the earlier E443xB ESG
models. For more information on downloading E443xB files, see "Downloading E443xB Signal
Generator Files" on page 259.
The following figure illustrates interleaving I and Q data. Remember that it takes two bytes (16 bits)
to represent one I or Q data point.
I Data
Q Data
Waveform data point
11001010 01110110 11101001 11001010 01110111 00111110 01011110 01110010
I Data
222
MSB
Binary 11001010 01110110 01110111 00111110
Hex CA 76
Binary 11101001 11001010 01011110 01110010
Hex E9 CA
Interleaved Binary Data
Q Data
Interleaved Hex Data
Waveform
data point
CA 76 E9 CA 77 3E 5E 72
I Data Q Data
LSB MSB
77
5E
Waveform data point
I Data
Waveform
data point
I Data Q Data
Keysight Signal Generators Programming Guide
LSB
3E
72
Q Data