Sony Tektronix VX4792 User Manual page 220

NRZ Pseudo Random (PRBS) Signal
VX4792 User Manual
The NRZ Pseudo-Random Signal stored in waveform file PRBS15.PAT
(Figure D–17) is a 32 Kbit (15 step) M-series pseudo-random signal generated
with the shift register shown in Figure D–18. All 1s are set in the initial register
and the data is changed every two samples.
H Waveform points: 32,767
H Clock frequency: 100 MHz
H Output parameters: Filter Through
1 0 1 1 0 0
Figure D-17: NRZ Pseudo random Signal
1 2 3 4
Figure D-18: Pseudo random Signals Generated with Shift Register
The NRZ Pseudo-Random Signal stored in sequence file PRBS15.SQC
(Figure D–19) is produced by repeating the PRBS15.PAT file eight times. To
display the sequence, use the SEQUence:EXPand command (page 3–70).
+1.0
-1.0
0
Figure D-19: NRZ Pseudo random Signal
5 13 14 15
Sample Waveform Library
32,766
D-19