Agilent Technologies E8257D PSG User Manual page 264

Peripheral Devices
N5102A Digital Signal Interface Module
The I sample is transmitted for one clock period and the Q sample is transmitted during the second
clock period; the sample rate decreases by a factor of two.
1 Sample Period
2 Clocks
Clock
I sample
4 bits per word
The I sample is transmitted for the first two clock periods and the Q sample is transmitted during the second two
clock periods; the sample rate is decreased by a factor of four.
Clock
I sample
4 bits per word
250
2 Clocks Per Sample
Q sample
4 bits per word
4 Clocks Per Sample
1 Sample Period
4 Clocks
Q sample
4 bits per word
Chapter 12