Operating Manual Vol 1 - ES Documentation

SMIQArbitrary Waveform Generator ARB2.21.2.6 ARB MOD - IQ OUTPUT... MenuFig. 2-225ARB MOD - IQ OUTPUT... menuIQ OUTPUT...Opens a window for entry of the IQ level and automatic level setting.IQ LEVELDefines the operating mode for setting the IQ level.AUTOMANThe level is set automatically to a maximum sum vectorof 0.5 V for maximum input level of the IQ modulator.The subsequent level entry is not effective.IEC/IEEE bus command:ARB:IQ:LEV:MODE AUTOThe level is set using the level entry below. Theinstrument data can not be guaranteed for entry valuesabove 0 dB, since the output level is limited. However,the signal-to-noise ratio, e.g., may thus be increased.IEC/IEEE bus command:ARB:IQ:LEV:MODE MANMAN LEVELIndicates the IQ level referred to maximum voltage.Range: -6 to 3 dBfsIEC/IEEE bus command :ARB:IQ:LEV –2.5DBIQ SKEWDetermines the delay between I and Q channel. Positive valuesdelay I against Q.IEC/IEEE bus command :ARB:IQ:SKEW –250ps1125.5555.03 2.355 E-9