Psk phase plane (hf, dir, sub and sat) – Wavecom W74PC V8.7.0 User Manual
Page 103
WAVECOM Decoder W74PC, W-PCI/e, W-CODE, W-CLOUD Manual V8.7.0
Analysis Tools
93
Filter
The filter adjusts the smoothing filtering applied to the display. Depending on the signal data content, it
may be found that more filtering is required to clearly observe the peaks.
PSK Phase Plane (HF, DIR, SUB and SAT)
The phase analysis tool is used for analyzing the characteristics of phase modulated signals, and to a lim-
ited extent, m-ary PAM (Phase Amplitude Modulation) signals.
If the symbol rate is known (for details see “
PSK Symbol Rate (HF, DIR, SUB and SAT)
” on page 92), start
the PSK phase plane analysis tool.
The display can be started and stopped by clicking on it. If stopped, a Paused message is displayed.
You can use an existing demodulator (BPSK, QPSK or DPSK) or IQ to decode the signal, and produce a
phase plane display of the output of the demodulator. For BPSK and QPSK, this provides a check of the
quality of the signal. When using DPSK, this provides an indication of the level of phase modulation which
is being used, i.e., 2-PSK to 16-PSK. As the symbol rate is equal to the baud rate of the signal, the baud
rate must be known to configure the demodulator.