Agilent E4438C ESG Vector Signal Generator - Advanced Test ...

Specifications forFrequency and Power CharacteristicsRepeatability and linearityRepeatability1900 MHz CW, 5 dBm, attenuator hold On, ALC OnRepeatability1900 MHz CW, 5 dBm, attenuator hold Off, ALC Off0.10.50.090.08Typical unitLimits0.450.40.070.35Powererror (dB)0.060.050.04Power error (dB)0.30.250.20.030.020.010.150.100.05Typical unitLimits00 20 40 60 80 100 120Elapsed time (minutes)00 1 2 3 4 5 6 7 8 9 10Elapsed time (minutes)Repeatability measures the ability of the instrument to return to a given powersetting after a random excursion to any other frequency and power setting.It is a relative measurement that reflects the difference in dB between themaximum and minimum power readings for a given setting over a specifictime interval. It should not be confused with absolute power accuracy, whichis measured in dBm. 10.40.30.2Lower limitLower STD deviationMeanUpper STD deviationUpper limitRelative level accuracyInitial power 7 dBm0.1Power error (dB)0-0.1-0.2-0.3-0.40 -20 -40 -60-80 -100-120-140Final power (dBm)Relative level accuracy measures the accuracy of a step change from anypower level to any other power level. This is useful for large changes (i.e. 5 dBsteps). 11. Repeatability and relative level accuracy are typical for all frequency ranges.8