Operating Manual Vol 1 - ES Documentation

SMIQNoise Generator and Distortion SimulatorCHARACTERISTIC...SELECT LIST...POLYNOMIAL...Switchover between distortion data from the polynomial and list. Underpolynomial the distortion data are calculated from the coefficients entered intothe polynomial menu. Under list they are calculated according to thecharacteristic transferred via the IEC/IEEE-bus and selected under SELECTLIST.IEC/IEEE-bus command :SOUR:DIST:MODE POLY | DATAOpens a window for selecting the distortion characteristics. Several distortioncharacteristics can be stored in the memory at the same time.IEC/IEEE-bus command :SOUR:DIST:DATA:SEL "TWTA"Opens a window for entering the polynomial parameters.Menu selection:NOISE/DIST - POLYNOMIAL...FREQ100.000 000 0 MHz LEVEL- 30.0 dBmFREQUENCYLEVELANALOG MODVECTOR MODDIGITAL MODDIGITAL STDNOISE/DISTLF OUTPUTSWEEPLISTMEM SEQUTILITIESNOISECARRIER/NOISYSTEM BANDWDISTORTIONCHARACTERISTSELECT LISTPOLYNOMIAL..LEVEL CORRECTIRECALCULATECALIBRATE CARRCOEFFICIENTS AM-AMCOEFFICIENTS AM-PMINVERSE FUNCTIONLEVEL CORRECTIONk2k3k4k5k2k3k4k50.0dB0.0dB0.0dB0.0dB0.0deg0.0deg0.0deg0.0degOFF ON0.0degFig. 2-240Menu NOISE/DIST - POLYNOMIAL...(POLYNOMIAL...) COEFFICIENT AM-AM Entry of polynomial coefficients k2 to k5 for theAM-AM distortion in dB. The polynomial has thefollowing form:Aout = Ain + n2*Ain^2 + n3*Ain^3 + n4*Ain^4 + n5*Ain^5with n = 10^(k/20) - 1, i = 2, 3, 4, 5Normalization: Aout_n = 0 ... 1, Ain = 0...1The coefficient n0 is always 0 and n1 is always 1.Value range: -10.0 to +10.0 dBIEEE-bus :SOUR:DIST:POLY:AMAM:K2 -2 DBCOEFFICIENT AM-PMEntry of polynomial coefficients k2 to k5 for theAM-PM distortion in degrees. The polynomial has thefollowing form:Pout = Pin + k2*Ain^1 + k3*Ain^2 + k4*Ain^3 + k5*Ain^4The coefficients K0 and K1 are always 0.Value range: - 60.0 to + 60.0 degrees.IEEE-bus :SOUR:DIST:POLY:AMPM:K3 -45 DEG1125.5555.03 2.385 E-9