Operating Manual Vol 1 - ES Documentation

Noise Generator and Distortion SimulatorSMIQ2.24.1 Setting NOISE/DIST MenuThe NOISE/DIST menu comprises all the settings of the noise generator and the distortion simulator.For calibration of the noise generator and the distortion simulator, see Chapter 2, Section CalibrationVECTOR MOD.Note:Menu selection:Functions NOISE/DIST and BB-AM cannot be set at the same time and switch offmutually.NOISE/DISTFREQ100.000 000 0 MHz LEVEL- 30.0 dBmFREQUENCYLEVELANALOG MODVECTOR MODDIGITAL MODDIGITAL STDNOISE/DISTLF OUTPUTSWEEPLISTMEM SEQUTILITIESNOISECARRIER/NOISE RATIOSYSTEM BANDWIDTHDISTORTIONCHARACTERISTIC...SELECT LIST...POLYNOMIAL...LEVEL CORRECTIONRECALCULATEOFF ON0.0 dB20.0 kHzOFF ONPOLYNOMIALCURRENT:-3.12 dBLISTTWTAFig. 2-239NOISEMenu NOISE/DIST (presetting)Switch on/off of noise source. The noise source is an AWGN (Additive WhiteGaussian Noise) signal.IEC/IEEE-bus commands :SOUR:NOIS ONCARRIER/NOISERATIOSYSTEMBANDWIDTHInput value of the carrier-to-noise ratio. Setting range is 5.0 to 30 dB. Whenchanging the CARRIER/NOISE RATIO, the noise power is changed as wellbut the carrier power remains unchanged. The carrier power is the powerdisplayed in the header under LEVEL.IEC/IEEE-bus command :SOUR:NOIS:SNR 10 dBInput value of system bandwidth.The system bandwidth is the HF-bandwidth by which the noise power iscalculated. The bandwidth of the generated noise can only be set in steps.The set bandwidth is to be 1.4 times the system bandwidth at minimum and10 MHz at maximum.Setting range: 10 kHz to 10 MHz;Resolution: three digitsIEC/IEEE-bus command :SOUR:NOIS:BAND 1.23 MHzDISTORTIONSwitch on/off of distortion.IEC/IEEE-bus command:SOUR:DIST ON1125.5555.03 2.384 E-9