RIGOL DG5000 Series - Manual (Page 92)

RIGOL Chapter 4 Common Modulation Output
User’s Guide for DG5000 4-16
To Set FSK Rate
When internal source is selected, press FSK Rate to set the “shift” frequency at which
the output frequency shifts between “carrier frequency” and “hop frequency”.
 Input the desired rate value using numeric keyboard or knob.
 The available rate ranges from 2 mHz to 1 MHz, and the default value is 100 Hz.
Note: This menu will be grayed out and disabled when “external” source is selected.
To Set Hop Frequency
The maximum alternating frequency (“hop” frequency) depends on the current
selected carrier waveform. Press HopFreq to highlight it, input the desire frequency
value using numeric keyboard or knob.
 Sine: 1 μHz to 250 MHz
 Square: 1 μHz to 120 MHz
 Ramp: 1 μHz to 5 MHz
 Arbitrary waveform: 1 μHz to 50 MHz
To Set Modulating Polarity
Press Polarity to select the “Positive” or “Negative” of the modulating waveform to
control the output frequency.
When internal modulation is selected, if the polarity is “positive”, logic low of the
modulating waveform amplitude corresponds to carrier frequency output and logic
high corresponds to hop frequency output; if the polarity is “negative”, the situation is
the opposite.
When external modulation is selected, if the polarity is “positive”, logic low of the input
corresponds to carrier frequency output and logic high corresponds to hop frequency
output; if the polarity is “negative”, the situation is the opposite.