Features and Function
HDG2000 Series Arbitrary Waveform Generator
35
Front Panel:
SCPI:
SOURce<n>:MOD:AM:DEPTh <depth>|MINimum|MAXimum
Frequency Deviation (FM)
The frequency deviation setting represents the peak variation in frequency of the modulated
waveform from the carrier frequency.
Frequen
cy deviation: 1 μHz to (carrier frequency)/2, default 100 Hz.
For FM, the carrier frequency must always be greater than or equal to the frequency deviation.
Attempting to set a deviation greater than the carrier frequency will cause the instrument to set
the deviation equal to the carrier frequency.
Frequency dev Carrier Frequency
≤ the carrier upper frequency limit + 1 kHz
Front-Panel
SCPI:
SOURce<n>:MOD:FM:DEViation <deviation>|MINimum|MAXimum
Modulating Source
The instrument accepts an internal, external or external trig modulation source.
Modulating source: Internal (default), External, Other Channel, or External Trig. The External
modulation source may be up to 100 kHz.
With the External source, an external waveform modulates the carrier waveform. The
modulation depth (AM) or frequency deviation (FM) is controlled by the ±5 V signal level on the
front-panel
MOD
connector.
When the External Trig source is selected, the modulation depth (AM) or frequency deviation
(FM) is controlled by the +5 V signal level on the front-panel
TRIG
connector.
Front-Panel
After enabling AM or FM, select the modulating source as shown: