AD9856
Typical Plots of Output Constellations
TRACE A: CH 1 QPSK MEAS TIME
1.5
TRACE A: CH 1 16QAM MEAS TIME
1.25
CONST
CONST
300
M
/DIV
250
M
/DIV
–1.5
–1.9607843757
1.96078437567
–1.25
–1.6339869797
1.63398697972
Figure 13. QPSK, 65 MHz, 2.56 MS/s
Figure 15. 16-QAM, 65 MHz, 2.56 MS/s
TRACE A: CH 1 64QAM MEAS TIME
1
TRACE A: CH 1 256QAM MEAS TIME
1
CONST
CONST
200
M
/DIV
200
M
/DIV
–1
–1.3071895838
1.30718958378
–1
–1.3071895838
1.30718958378
Figure 14. 64-QAM, 42 MHz, 6 MS/s
Figure 16. 256-QAM, 42 MHz, 6 MS/s
TRACE A: CH 1 MSK1 MEAS TIME
1.5
CONST
300
M
/DIV
–1.5
–1.9607843757
1.96078437567
Figure 17. GMSK Modulation, 13 MS/s
REV. B
–9–
AD [ ANALOG DEVICES ]
