Harogic digital modulation analysis option

This option adds the basic vector modulation analysis mode to a Harogic PXN series spectrum analyser. The mode demodulates 2ASK, 2FSK, 4FSK, GMSK, BPSK, QPSK, 8PSK and 16QAM, 32QAM, 64QAM, 128QAM and 256QAM signals at symbol rates up to 32.5MSPS, using a root raised cosine filter with a roll-off factor adjustable from 0.01 to 0.99.

Results are shown as spectrum, constellation and eye diagrams, with EVM, amplitude error, phase error, frequency error, signal-to-noise ratio and part of the bitstream. Symbol length is 2000, or 4000 for 128QAM and 256QAM.