User Manual

SIGLENT
SSG3000X User Manual 40
2.4.2.3 FM Shape
Select MOD->FM-> FM Shape. After setting to ―Int‖ or ―Int+Ext‖, you can select FM
waveform as ―Sine‖ or ―Square‖.
2.4.2.4 FM Rate
Select MOD->FM-> FM Rate, you can set the FM rate.
1. The sine wave modulation frequency range is 0.01Hz~100kHz
2. The square wave modulation frequency range is 0.01Hz~20kHz
2.4.2.5 FM Deviation
Corresponding to different carrier frequencies, the frequency offset range may be different;
the setting range is governed by the following equation: 0.01Hz~N×1MHz. For the
definition of N, refer to the data sheet.
 When the modulation source is set to ―Int ―, the set value is actually the frequency
offset of the RF output.
 When the modulation source is set to ―Ext‖, it is related to the amplitude of the
external input modulation signal. The offset of RF output = amplitude of input signal ×
external modulation sensitivity.
 When the modulation source selects ―Int+Ext‖, the set value is the maximum value of
the total offset, the internal source accounts for 50%, and the external source accounts for
50%. RF output offset = set value × 0.5 + external input signal amplitude × external