Operating Manual Vol 1 - ES Documentation

Digital Standard NADCSMIQ(CLOCK...) CLOCK SOURCE Selection of clock source.INT SMIQ uses internally generated clock signals.EXT An external symbol clock or bit clock is fed inat connectors SYMBOL CLOCK or BITCLOCK. The clock synthesizer on themodulation coder is synchronized to thisclock.The symbol rate has to be set with anaccuracy of ± 1 %.The polarity, the trigger threshold and theinput resistance of the clock inputs can bemodified in menu DIGITAL MOD - EXTINPUTS.IEC/IEEE-bus command :SOUR:NADC:CLOC:SOUR INTMODESelection of clock for external clock signal.SYMBOL The external clock has to be a symbol clock.BIT The external clock has to be a bit clock.IEC/IEEE-bus command :SOUR:NADC:CLOC:MODE SYMBDELAYSetting the delay of generated modulation signal to anexternal clock.This can be used, for example, for synchronization with asecond unit to achieve time synchronization between themodulation signals of the two units.IEC/IEEE-bus command :SOUR:NADC:CLOC:DEL 0.5POWER RAMPCONTROL...Opens a window for setting the envelope control, especially for the rising andfalling ramp at the beginning and end of a slot.FREQNADC100. 000 000 0 MHzLEVEL -30.0 dBmPEP - 27.6 dBmFREQUENCYLEVELANALOG MODVECTOR MODDIGITAL MODDIGITAL STDLF OUTPUTSWEEPLISTMEM SEQUTILITIESPHSIS95NADCPDCGSMSTATEMODULATION...TRIGGER MODEEXECUTE TRIGTRIGGER....CLOCK...POWER RAMP C>SLOT ATTENUA1TCHSET DEFAULTRAMP TIME2.0 SymbRAMP FUNCTION LIN COSRAMP DELAY0.0 SymbRISE OFFSET0 SymbFALL OFFSET0 SymbFig. 2-180Menu DIGITAL STD - NADC - POWER RAMP CONTROL... , SMIQ equipped withModulation Coder SMIQB20 and Data Generator SMIQB111125.5555.03 2.270E-9