Tektronix OM4006D, User Manual

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Appendix A: MATLAB variables used by core processing
Vblock – voltage vs. time on four scope channels
SigType – integer value indicating the modulation format of the signal
1 – single polarization binary phase shift keying (BPSK)
2 – single polarization quadrature phase shift keying (QPSK)
3 – dual polarization BPSK
4 – dual polarization QPSK
5 – on-off keying (OOK)
6 – three state OOK, where the on state can take on a fi eld of +1 or -1
7 – single polarization 16-state quadrature amplitude modulation (16-QAM)
8 – dual polarization 16-QAM
9 – single polarization 64-QAM
10 – dual polarization 64-QAM
11 – single polarization offset QPSK
12 – dual polarization offset QPSK
13 – offset polarization QPSK
14 – single polarization 8-ary phase shift keying (8-PSK)
15 – dual polarization 8-PSK
16 – single polarization 8-QAM
17 – dual polarization 8-QAM
PattXRe, PattXIm, PattYRe, PattYIm – de fi ne data patterns on tributaries,
used to identify bit errors
The variables that are calculated by CoreProcessing include:
zXSym, zYSym – complex electric fi eld at symbol center times on X and Y
polarizations; displayed as blue dots on constellation diagram in OUI
zX, zY – complex electric fi eld, continuous with time; displayed as eye
diagrams
wSym – optical power (electric fi eld squared) at symbol centers
w – optical power, continuous with time
NumErrs – bit error count on each tributary, together with total number of
bits and sync loss status
OM4000D Series Coherent Lightwave Signal Analyzer 107