User Manual

SIGLENT
SSG3000X User Manual 39
2.4.2 Frequency Modulation (FM)
Enter the FM interface
1. Click the MOD icon in the main interface to enter the MOD interface. The MOD
interface displays the AM page by default. Then switch to the FM modulation page by
clicking or sliding left.
2. Enter the FM modulation page directly through the shortcut menu.
3. Enter the MOD interface via the MOD button and switch to the FM page.
2.4.2.1 FM State
Select MOD ->FM->FM State, to turn FM on or off.
2.4.2.2 FM Source
Select MOD ->FM-> FM Source to set ―Int‖ or ―Ext‖ or ―Int + Ext‖. The default is ―Int‖.
1. Int
Use the internal LF generator as the modulation signal source for FM. The FM Shape, FM
deviation, and FM rate can be set.
When LF and FM mod is simultaneous on, their frequency and shape is changed
according to who was changed.
2. Ext
Use an externally applied modulation signal. The external signal is input via the MOD EXT
connector with an impedance matching of 50 ohms and the amplitude is up to +-3V.
3. Int + Ext
Use both, the internal and externally applied modulation signal;this technique can be used
to perform two-tone FM.