N5161A/62A/81A/82A/83A MXG Signal Generators User's Guide

Optimizing PerformanceUsing an Output Offset, Reference, or Multiplier• Amplitude: Press Amptd > More > Amptd Offset > offset value > dB.Indicates that an offset is onExamplesParameterExample#1Example#2Example#3CommentsEntered (and displayed) Value: 300 MHz 300 MHz 2 GHz The entered value must be positive.Offset: 50 MHz −50 MHz −1 GHz An offset value can be positive or negative.Output Frequency: 250 MHz 350 MHz 3 GHzThe signal generator alerts you if theoutput frequency or amplitude is out of range.When using the signal generator as a local oscillator (LO), you can use the offset to display thefrequency of interest, as illustrated below:Antenna tuned to 1321 MHzRF Amplifier Mixer FilterIF AmplifierIF = 321 MHzIF Output321 MHzOutput Frequency = 1000 MHzSignal Generator(local oscillator)Selected Offset321 MHz−679 MHzSIgnal Generator Display1321 MHz (Antenna Frequency)321 MHz (IF Output)Setting an Output ReferenceUsing an output reference, the signal generator can output a frequency or amplitude that is offset(positive or negative) by the entered value from a chosen reference value.RF Output = reference value + entered valueTo set a reference:1. Set the frequency or amplitude to the value you want as the output reference level.2. Frequency: Press Frequency > Freq Ref SetThe frequency displays 0.00 Hz, indicating that this is the RF output frequency “zero level.”116 Agilent N5161A/62A/81A/82A/83A MXG Signal Generators User’s Guide