Operating Manual Vol 1 - ES Documentation

SMIQDigital Standard NADC(MODULATION...)SET TOSTANDARDMODULATION TYPESYMBOL RATEFILTERSets the subsequent modulation parameters to thevalues predefined by the standard.Displays the modulation type.Input value for the symbol clock. 24.3 ksymbol/s arepreset.IEC/IEEE-bus :SOUR:NADC:SRAT 24.31KHZSelection of baseband filter. A selection betweenNyquist filters COS, SQRCOS or a user-defined filterUSER (cf. Section Digital Modulation) is possible.IEC/IEEE-bus :SOUR:NADC:FILT:TYPE COSROLL OFF FACTORFILTER MODELOW DISTORTIONInput value for the roll-off factor.IEC/IEEE-bus :SOUR:NADC:FILT:PAR 0.35Selection of filter mode.LOW_ACP Filter for minimum Adjacent ChannelPower.IEEE :SOUR:NADC:FILT:MODE LACPLOW_EVM Filter for minimum vector error.IEEE :SOUR:NADC:FILT:MODE LEVMSwitch on/off of low-distortion mode..After switch-on, the level of the IQ baseband signalsis reduced by 3 dB. In some cases, this might reduceundesired intermodulation products. OFF is normallythe more favourable setting.IEC/IEEE-bus command :SOUR:NADC:LDIS OFFTRIGGER MODE...Opens a window for selecting the trigger mode.AUTOThe NADC signals are continuously transmitted in theactivated slots.IEC/IEEE-bus :SOUR:NADC:SEQ AUTORETRIGThe NADC signals are continuously transmitted in theactivated slots. A trigger event causes a restart.IEC/IEEE-bus :SOUR:NADC:SEQ RETRARMED_AUTO The NADC signal generation does not start until atrigger event has occurred. The unit thenautomatically switches over to the AUTO mode andcan no longer be triggered.IEC/IEEE-bus :SOUR:NADC:SEQ AAUTARMED_RETRIG The NADC signal generation does not start until atrigger event has occurred. The unit thenautomatically switches over to the RETRIG mode.Each new trigger event causes a restart.IEC/IEEE-bus :SOUR:NADC:SEQ ARET1125.5555.03 2.267 E-9