Operating Manual Vol 1 - ES Documentation

SMIQDigital Standard IS-95 CDMA(TRIGGER...) TRIGGER SOURCE Selection of trigger source.EXTThe CDMA chip sequence is startedfrom frame 1 by means of the activeslope of an external trigger signal.The polarity, the trigger threshold andthe input resistance of the TRIGIN inputcan be modified in menu DIGITALMOD - EXT INPUTS.INT A trigger event is manually executed byEXECUTE TRIGGER.IEC/IEEE-bus :SOUR:IS95:TRIG:SOUR EXTEXT TRIGGERDELAYSetting the number of chips (symbols) by which anexternal trigger signal is delayed before it starts theCDMA chip sequence.This is used for setting the time synchroneitybetween the DUT and other units.IEC/IEEE-bus :SOUR:IS95:TRIG:DEL 3EXT RETRIGGERINHIBITSetting the number of chips for which a restart isinhibited after a trigger event.With TRIGGER MODE RETRIG selected, each newtrigger signal restarts the CDMA chip sequence. Thisrestart can be inhibited for the entered number ofchips (symbols).Example:The entry of 98000 symbols, for example, causesnew trigger signals to be ignored for the duration of98000 chips after a trigger event.IEC/IEEE-bus :SOUR:IS95:TRIG:INH 16000TRIGGER OUT 1/2Selection of signals for outputs TRIGOUT 1 andTRIGOUT 2 of connector PARDATA.All the times indicated are valid for a chip rate of1.2288 Mcps.TRAFFIC FRAMESHORT SEQROLLOVERSUPER FRAMEEVEN SECONDPCG20-ms frame clockIEC :SOUR:IS95:OUTP1 TFR80/3-ms clockIEC :SOUR:IS95:OUTP1 SSR80-ms clockIEC :SOUR:IS95:OUTP1 SFR2-s clockIEC :SOUR:IS95:OUTP1 ESECpower control group rateIEC :SOUR:IS95:OUTP1 GATE1125.5555.03 2.141E-9