Operating Manual Vol 1 - ES Documentation

Digital ModulationSMIQFREQΠ/4DQPSK100. 000 000 0 MHzLEVEL - 30.0 dBmPEP - 27.6. dBmFREQUENCYLEVELANALOG MODVECTOR MODDIGITAL MODDIGITAL STDLF OUTPUTSWEEPLISTMEM SEQUTILITIESSOURCE...SELECT STANDARD...MODULATION...SYMBOL RATEFILTER...CODING...TRIGGER MODE...EXECUTE TRIGGERTRIGGER...CLOCK...POWER RAMP CONTROL...SOURCE... OFFRAMP TIME2.0 SymbRAMP FUNCTIONLIN COSRAMP DELAY0.0 SymbATTENUATION15.0 dBFig. 2-67DIGITAL MOD - POWER RAMP CONTROL menu, SMIQ equipped with option ModulationCoder SMIQB20 and option Data Generator SMIQB11(POWER RAMPCONTROL...)SOURCESelection between analog and digital envelopecontrol and selection of source.OFF Envelope control is switched off.IEC/IEEE :SOUR:DM:PRAM:STAT OFFINT Signals BGAT and LATT from the activeCONTROL LIST (CLIST) are used forenvelope control (only with option SMIQB11)IEC/IEEE :SOUR:DM:PRAM:STAT ON:SOUR:DM:PRAM:SOUR CLISTEXT_ANALOG Envelope control is via an externalanalog signal that can be fed in viaconnector POWER RAMP.IEC/IEEE-bus commands:SOUR:DM:PRAM:STAT ON:SOUR:DM:PRAM:SOUR AEXTEXT_DIGITAL Envelope control is via externaldigital signals to be applied toBURST GATE and LEV ATT ofconnector PAR DATA.IEC/IEEE-bus commands:SOUR:DM:PRAM:STAT ON:SOUR:DM:PRAM:SOUR DEXTRAMP TIMEInput value of rise time of envelope after a transitionfrom Low→High of signal BURST GATE and of falltime after a transition from High→Low.The setting is a multiple of the symbol duration.IEC/IEEE-bus :SOUR:DM:PRAM:TIME 3.01125.5555.03 2.112E-9