Download 3 - Agilent Technologies
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Chapter 2 Front-Panel Menu Operation To Output an FSK Waveform To Output an FSK Waveform You can configure the waveform generator to “shift” its output frequency between two preset values using FSK modulation. The rate at which the shift happens is the FSK rate, and this FSK rate is determined by the internal rate generator or the signal level on the rear-panel Ext Trig connector. The two frequencies that the signal shifts between are called 4 the “carrier frequency” and the “hop frequency.” For this example, you will set the “carrier” frequency to 3 kHz and the “hop” frequency to 500 Hz, with an FSK rate of 100 Hz. 1 Select the function, frequency, and amplitude of the carrier. Press and then press the Sine softkey. Press the Frequency, Amplitude, and Offset softkeys to configure the carrier waveform. For this example, select a 3 kHz sine wave with an amplitude of 5 Vpp, with 0 offset. 2 Select FSK. Press and then select FSK using the Type softkey. Then press the Modulate softkey to turn modulation On. Notice the status message “FSK Modulated” at the top left of the display. 39 2