SSG5000A RF Signal Generator User Manua
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39 SSG5000A User Manual
FM Shape
Select
MOD
->
FM
->
FM Shape
. After setting to “Int” or “Int+Ext”, you can select FM
waveform as “Sine” or “Square” or “Sawtooth” or “Triangle”.
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 /Sawtooth /Triangle wave modulation frequency range is 0.01Hz~20kHz
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 “Int1” or “Int2” or “Dual”, the set value is actually
the frequency offset of the RF output.
⚫
When the modulation source is set to “Int1 + Int2”, there are two FM deviations.
⚫
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 modulation sensitivity
.