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Modulation source, To set 4fsk rate, To set hop frequencies – RIGOL DG4000 Series User Manual

Page 128

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RIGOL Chapter 5 Modulated Waveform Output

DG4000 Series User’s Guide

5-28

Carrier Waveform

Frequency Range

Sine

1μHz to 160MHz

Square

1μHz to 50MHz

Ramp

1μHz to 4MHz

Arbitrary Waveform

1μHz to 40MHz


After the carrier waveform is selected, you can press Freq/Period to highlight
“Freq”, and then use the numeric keyboard or direction keys and knob to input the
desired frequency value.

Modulation Source


4FSK uses internal modulation source and the modulating waveform is Sine.

To Set 4FSK Rate


4FSK uses internal modulation source. Press KeyFreq to set the frequency at
which the output frequency shifts between “carrier frequency” and three “hop
frequencies”.
 Use the numeric keyboard or direction keys and knob to input the desired

frequency value.

 The frequency range is from 2mHz to 1MHz and the default is 100Hz.

To Set Hop Frequencies


Alternating frequencies (“hop” frequencies) are the modulating frequencies. The
ranges of hop frequencies depend on the carrier waveform currently selected.
Press HopFreq1, HopFreq2 and HopFreq3 to highlight them and input the
desire frequency values using the numeric keyboard or direction keys and knob
respectively.
 Sine: 1μHz to 160MHz
 Square: 1μHz to 50MHz
 Ramp: 1μHz to 4MHz
 Arb: 1μHz to 40MHz