Anritsu Series MS278XB - Manual (Page 192)

Modulation Measurements Measurements
5-36 MS278XB OM
QPSK Measurement
The following modulation measurements use a 2 GHz test signal at 5 dBm with the analyzer set up as follows:
• Modulation Format: QPSK
• Filter Type: vNyquist
• Roll-off Factor (a): 0.22
• Symbol Rate: 3.84 MHz
Vector Graph of QPSK Modulated Test Signal
Figure 5-14. Vector Graph of QPSK Modulated Test Signal