Chapter 5 151
5 Analog Modulation
In the following sections, this chapter describes the standard continuous waveform and optional
analog modulation capability in the Agilent E8257D PSG Analog, E8663D, Analog, and E8267D PSG
Vector signal generators.
• “Analog Modulation Waveforms” on page 151
• “Configuring AM (Option UNT)” on page 152
• “Configuring FM (Option UNT)” on page 152
• “Configuring ΦM (Option UNT)” on page 153
• “Configuring Pulse Modulation (Option UNU/UNW)” on page 154
• “Configuring the LF Output (Option UNT)” on page 156
Analog Modulation Waveforms
Available standard internal waveforms include:
Sine sine wave with adjustable amplitude and frequency
Dual–Sine dual–sine waves with individually adjustable frequencies and a percent–of–
peak–amplitude setting for the second tone (available from function generator
only)
Swept–Sine swept–sine wave with adjustable start and stop frequencies, sweep rate, and
sweep trigger settings (available from function generator only)
Triangle triangle wave with adjustable amplitude and frequency
Ramp ramp with adjustable amplitude and frequency
Square square wave with adjustable amplitude and frequency
Noise noise with adjustable amplitude generated as a peak–to–peak value (RMS value is
approximately 80% of the displayed value)
With Option UNT, the signal generator can modulate the RF carrier with amplitude, frequency, or
phase modulation. Option UNT also provides low–frequency output capability.
With Option UNU, the signal generator can modulate the RF carrier with standard pulse modulation
(150 ns minimum pulse width).
With Option UNW, the signal generator can modulate the RF carrier with narrow pulse modulation.
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