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Contents
9
Position and triggering of the DiSEqC signal ............................................................................................. 68
SPECTRUM MENU......................................................................................................................................... 69
Level measurement of analogue signals.................................................................................................... 69
Level measurement of digital signals ......................................................................................................... 69
Selecting the spectrum representation....................................................................................................... 70
ANALOG marker ........................................................................................................................................ 70
DIGITAL marker ......................................................................................................................................... 70
C/N measurement of analogue signals in Sat operation............................................................................70
C/N measurement of digital signals in Sat operation ................................................................................. 71
Cross-polarisation measurement on signals in SAT operation .................................................................. 71
CONST MENU................................................................................................................................................. 72
Colour representation of I/Q value pairs.................................................................................................... 72
Constellation diagram for QPSK (DVB-S) ................................................................................................. 72
Measurement of the bit error rate (BER).................................................................................................... 72
Measurement of signal noise ratio (SNR) .................................................................................................. 73
Carrier offset............................................................................................................................................... 73
Frontend locked.......................................................................................................................................... 73
Selecting the symbol rate (symbol-clock)................................................................................................... 74
Selecting the code rate............................................................................................................................... 74
Inverting /not invert ing a constellation diagram......................................................................................... 74
Examples for QPSK constellation diagrams............................................................................................... 75
Constellation diagram for QAM (DVB-C).................................................................................................... 76
Measurement of the bit error rate (BER).................................................................................................... 76
Measurement of modulation error rate (MER)............................................................................................ 76
Carrier offset............................................................................................................................................... 76
Frontend locked.......................................................................................................................................... 77
Selecting the symbol rate (symbol-clock)................................................................................................... 77
Inverting /not inverting constellation diagram............................................................................................. 77
Zoom........................................................................................................................................................... 77
Examples for QAM constellation diagram .................................................................................................. 78
DVB-T.............................................................................................................................................................. 80
Constellation diagram DVB-T (optional)..................................................................................................... 80
Measurement of bit error rate (BER) .......................................................................................................... 80
Measurement of signal noise ration (SNR) ................................................................................................ 80
Carrier offset............................................................................................................................................... 80
Carrier mode............................................................................................................................................... 80
Modulation .................................................................................................................................................. 80
Hierarchy .................................................................................................................................................... 81
Code rate.................................................................................................................................................... 82
Guard.......................................................................................................................................................... 82
Invers.......................................................................................................................................................... 82
Frontend locked.......................................................................................................................................... 82
Channel display .......................................................................................................................................... 82
Impulse response representation (Echo representation) (optional) .......................................................... 83
BROADBAND CABLE ANALYSIS MEASURING SYSTEM MSK 33 / MVG................................................ 84
Measuring principle ...................................................................................................................................... 84
Comfortable upstream 4.0…80 MHz and Downstream 47…860 MHz measurement ................................ 86
Upstream measurement ............................................................................................................................... 86
Downstream measurement .......................................................................................................................... 86
AUTO MEASURE............................................................................................................................................ 88