Examples for Qpsk constellation diagrams

Const Menu

QPSK signal without faults

QPSK signal with phase noise (LNC)

QPSK signal with intermodulation noise	QPSK signal with superposed broadband
	noise. Possible cause: Defective amplifier
	or high cable loss.

QPSK signal with amplitude hum of an amplifier

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Kathrein 9986492, MSK 33 manual Examples for Qpsk constellation diagrams

Contents

Sat/TV/FM Test Receiver MSK Page Preface Contents Checking the LNB supply voltage of a satellite receiver Selecting the colour standards PAL, Secam and Ntsc Mpeg transport stream interface TS-Parallel, Lvds optional Measuring an audio signal via the AV socket Scart Measurement of analogue signals in Sat operation 100 113 107 Validity of this manual General safety informationExplanation of symbols Important Notes Mechanical loadbearing capacity Safety InstructionsConnections Proper use Functions Functions DVB-S DVB-S/C/T Functions overviewFunction Return path LP Front panel Displays, Operating Elements and Connections TS parallel Option 10 AUX Mains connection Mains switch DC socket Option / XLR-socketRear panel Headphone connection Side view MSK Observing angle of the on screen display Operating Concept ScreenFrequently recurring softkeys Accu CAP % I=0.00 a General information for operationMenu selection Main menu Safety fuse Place of installation of the MSKMains voltage / mains switch On/Off switch Accumulator and Battery Operation Accumulator operationDC socket option Connections Measurement Possibilities Level measurementMaximal input level Sat menu Sat Operation Setting of the LNB voltage supply Selecting the LO frequencyEntering the transponder frequency Calling up menu LNB-CONTROL Switch-over of Analog digit. DvbsBargraph Level range Comment Display III LNB current draw KHz control signalLNB control menu LNB supply voltage Checking the LNB supply voltage of a satellite receiver Calling up the DiSEqC/V SEC menuDiSEqC DiSEqC menu Display field B Submenu for entering DiSEqC commandsTX display field Display field a Example Entering and transmitting a DiSEqC command Simple DiSEqCData burst Tone burst RX 0 E2 10 UFOmicro DiSEqC menuGeneral information Display fields Modus Tx+rx Command1390 Operating the menus Sat Operation Sending a V-SEC command TX SEC menuEntering the hex numbers Menu Level-dependent acoustic signalInitial ANALOG-menu Calling up the sound subcarrier Video polarity Second Anlaog menu Audio carrier frequency Audio carrier settingSetting of the de-emphasis Sat subcarrier menu Audio carrier table for reception type Audio carrier tables for the satellite reception Digital Measurements SAT Digital menu27.500 Level measurement Digital Min./Max. levels Rf chan TV OperationTV menu C10 210.25MHz A65.0dBµV TV control menu TV-DiSEqC /VSEC menuLNB U= 0.0 V I= 0 mA Selecting the audio carriers Analogue menuSelecting the standard Audio carrier table for TV reception Measuring audio carrier spacing Measuring the min./max. levelMeasuring the current level Selecting the colour standards PAL, Secam and Ntsc 900 SR1 TV Digital menuSelecting demodulation for DVB-C measurement Mode DVB-T optional Selecting channel bandwidthsChBW 8MHz Return path if menu Return Path if Menu Audio carrier table for if reception Analog menu Measurement of the min./max. level Measurement of the audio carrier spacingMeasurement of the current level QAM64 mode Entering symbol rateIf RP Digital Menu Radio Operation Radio menuRadio Analog menu Measuring the min/max level FM Measure ALL Video output AV MenuDecoder operation Decoder operation baseband Video input Breaking voltage RGB operationMpeg transport stream interface TS-Parallel, Lvds optional Mpeg Decoder Menu Optional PAT 083sat KiKa Phoenix Setting Menu Unit dBmVOffset 0.0 dB Screen Menu Screen setup Calls up the SYS TEM menu Setting the dateSetting the time Click button System Menu Copy Menu Saving and calling up unit settingsSaving the unit settings Calling up saved settings Printing out all measurements in Sat mode Printing out all measurements in TV mode Spectr Mode Menu Original videotext size Text MenuEnlarging the videotext Holding the videotext Video scope menu Horizontal zoom Reducing the video signalHorizontal zoom -Enlarging the video signal Scope Menu Measurement of the amplitude of the video signal Measurement of video signals via the AV socket ScartSelecting the video line Audio Scope TimePos Shot Cont Position and triggering of the DiSEqC signalDiSEqC Scope Saving function Max Spectral MenuMarker Span Large ¡ mark ßlevel Ana Marker Dig Marker Ana Measurement of digital signals in Sat operation Cross-polarisation measurement on signals in SAT operationZoom marker Max off Colour representation of I/Q value pairs Constellation diagram for Qpsk DVB-SMeasurement of the bit error rate BER Const Menu Measurement of signal noise ratio SNR Carrier offsetFrontend locked Selecting the code rate Selecting the symbol rate symbol-clockInverting /not inverting a constellation diagram 27.500 SR Examples for Qpsk constellation diagrams Measurement of modulation error rate MER Constellation diagram for QAM DVB-C Zoom Inverting /not inverting constellation diagram Examples for QAM constellation diagram Const Menu Carrier mode Constellation diagram DVB-T optionalMeasurement of bit error rate BER Measurement of signal noise ration SNR Hierarchy Code rate Guard Invers Frontend locked Channel display Impulse response representation Echo representation optional Measuring principle Broadband Cable Analysis Measuring System MSK Track MVG10 RGB MSK33 Upstream measurementDownstream measurement MSK33 MVG10 Cable system With return path capable amplifiers Display of the check point Auto Measure Interfaces Modem / RS 232 interfaceConnection cable for modem / RS Modem/RS232 menu Setting baud rateSetting local echo Setting hardware handshake Log-in procedure Code PasswordTTY mode Ansi mode Requesting help Example for logging-in in Ansi mode Interfaces List of the command abbreviations LDU Loading and saving predefined settingsSTU STU RET Maintenance, Storage and Customer Service Printer paper-exchanging the ribbon Before opening the unit, disconnect the supply voltageRibbon exchange Technical Appendix Overview of DiSEqC commandsCommand overview framing byte Command overview address byte Reset Reset DiSEqC minicontroller Command overview command byte Command for Kathrein matrix EXR DiSEqC commands for Kathrein matricesCommand overview data byte Command for Kathrein matrix 9xx-series USB/OSB ESB Channel tablesChannel and frequency table standard B/G frequency in MHz VHF-CCIR UHF-CCIR VHF UHF Channel and frequency table standard Lfrequency in MHz XII Channel and frequency table standard D/K frequency in MHzVII Viii Channel and frequency table standard I frequency in MHz Channel and frequency table standard M/N frequency in MHz Channel and frequency table standard M/Nfrequency in MHz Technical Data Technical dataPower supply SNR Qpsk BERMER Accessories Scope of deliveryAssignment of the Scart socket TXD RXD RTS CTS DSR GND DCD DTR Assignment of RS232 socket Assignment of socket TS Parallel optional Unit variants General notes Downloading New MSK33 Operating Software 114 115