Operating Manual Vol 1 - ES Documentation

SMIQ Digital Standard W-CDMA (NTT DoCoMo/ARIB 0.0)MODULATION...Menu selection:Opens a window for setting the modulation parameters.DIGITAL STD - WCDMA - MODULATION...FREQWCDMA100. 000 000 0 MHzLEVEL -30.0 dBmPEP -14.9dBmFREQUENCYLEVELANALOG MODVECTOR MODDIGITAL MODDIGITAL STDLF OUTPUTSWEEPLISTMEM SEQUTILITIESPHSIS-95WCDMANADCPDCGSMDECTSTATEMODULATION TYPE... QPSK 2b/symMODESET DEFAULTCHIP RATECHIP RATE VARIATIONFILTER...4.096 McpsWCDMA 0.22LINK DIRECTMODULATION... FILTER MODE LOW_ACP LOW_EVMTRIGGER MODEEXECUTE TRIGGER> LOW DISTORTION MODETRIGGER....CLOCKOFF ONTOTAL POWERFig. 2-91Menu DIGITAL STD - WCDMA - MODULATION..., equipped with options modulation coderSMIQB20, data generator SMIQB11 and SMIQB43(MODULATION...) MODULATION TYPE Selection between the types of modulation QPSKand offset QPSK.IEC/IEEE-bus :SOUR:WCDM:FORM QPSKCHIP RATEVARIATIONFILTER...ROLL OFF FACTORSetting value for the chip clock frequency. The valuefor CHIPRATE from the main menu is preset. CHIPRATE VARIATION modifies the output clock and themodulation bandwidth as well as the outputsynchronization signals. It has no effect on thecalculated chip sequence.IEC/IEEE-bus :SOUR:WCDM:CRAT:VAR 4096001Opens a window for selecting the baseband filter.Selection can be made between a filter optimized forW-CDMA, the standard Nyquist filters COS andSQRCOS or a user-defined filter USER (cf. SectionDigital Modulation) is possible. The optimized rootcosine filter WCDMA 0.22 is preset. Its roll-off factoris fixed to 0.22.IEC/IEEE-bus :SOUR:WCDM:FILT:TYPE WCDMSetting value of roll-off factor.The setting is only possible provided that a COS orSQRCOS filter is selected under FILTER.IEC/IEEE-bus :SOUR:WCDM:FILT:PAR 0.221125.5555.03 2.157E-9