G3 Vector Signal Generator RF Output Modes
应用文章
This application note describes the RF output modes provided by G3 Vector Signal Generators. It provides information about how different RF output modes affect transients and modulations, including blanked transitions.
Keysight signal generators use multiple methods that control the behavior of the RF output signal during transients and when modulations are active.
The most significant methods are:
- An automatic leveling correction (ALC) system that provides maximum output power accuracy. The ALC compensates for effects of ambient conditions like temperature on output power. The ALC monitors the output power, compares it to the programmed setting, and corrects the power level if needed.
- An output blanking switch that can turn off the signal at the RF output. It is utilized to blank transitions between different settings and suppress the RF output signal during transients. Thereby the output power will not overshoot while the hardware settles after switching between different power or frequency settings.
- A crest factor correction that compensates power level differences at the output caused by active modulations.