3GPP Signal Analyzer Measurement Guide : TD‑LTE Signal Analyzer : Measurements Menu : Constellation Menu
 
Constellation Menu
Key Sequence: Measurements > Modulation > Constellation
TD‑LTE Constellation Menu
Depending on the current measurement view, you may need to press the Constellation key one more time to display this menu.
Reference Points: Press this key to turn on and off the reference points (small white circles) for the various constellations. On is the default state.
Data Legend: Turns on and off the legend box in the top right corner of the constellation graph. On is the default state.
Back: Press this submenu key to return to the Modulation Menu.
The constellations are color coded as follows:
QPSK is shown in purple
16‑QAM is shown in green
64‑QAM is shown in yellow
256-QAM is shown in blue
Note: 256-QAM modulation is supported only when Option 886 is installed.
Values for the following measurements are displayed in a table beneath the graph:
Ref. Signal (RS) Power
EVM (rms)
Freq Error
Carrier Frequency
Sync Signal (SS) Power
EVM (pk)
Freq Error (ppm)
Cell ID