Agilent 33120A User's Guide

Chapter 3 Features and FunctionsOutput ConfigurationOutput Frequency(continued)œ Possible Conflict with Function Change: The output frequency isautomatically adjusted if you select a function whose maximumfrequency is less than that of the currently active function.For example, if you output a 1 MHz sine wave and then change thefunction to triangle wave, the function generator will adjust theoutput to 100 kHz (the upper limit for triangle waves).From the front panel, “FREQ LIMIT” is displayed and the frequency isadjusted. From the remote interface, a -221, “Settings conflict” error isgenerated and the frequency is adjusted.œ Possible Conflict with Duty Cycle (square wave only): For outputfrequencies above 5 MHz, the duty cycle is limited to values between40% and 60% (below 5 MHz, the range is 20% to 80%). The duty cycleis automatically adjusted if you select a frequency that is not validwith the present duty cycle. For example, if you set the duty cycle to70% and then change the frequency to 8 MHz, the function generatorwill automatically adjust the duty cycle to 60% (the upper limit forthis frequency).From the front panel, “% DUTY LIMIT” is displayed and the duty cycle isadjusted. From the remote interface, a -221, “Settings conflict” error isgenerated and the duty cycle is adjusted.œ Front-Panel Operation: To set the output frequency, press Freq .Then use the knob, arrow keys, or “Enter Number” mode to set thefrequency.œ Remote Interface Operation:FREQuency {|MINimum|MAXimum}You can also use the APPLy command to select the function,frequency, amplitude, and offset with a single command.58