User’s Manual UTG1000X Series
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1) Internal Source
When the modulation source is internal, the internal modulation wave is a square sine with duty ratio 50%
(non-adjustable). The frequency of movement between the carrier frequency and the hopping frequency
can be specified by setting the FSK rate.
2) External Source
When the modulation source is external, the carrier wave will be modulated by the external wave. ASK
amplitude output is controlled by logical level on the external digital modulation terminal (FSK /CNT/Sync
connector). For example, it outputs the frequency of carrier wave when the logical level of external input is
low; it outputs the hopping frequency when the logical level of external input is high.
Set ASK Rate
When ASK mode is enabled, it can set ASK rate (the range is 2 mHz～100 kHz). The default is 100 Hz. It can be
change by multifunction rotary knob and arrow keys or press soft key Rate, and then use numerical keyboard
to input number and select unit soft key to complete the setting.
Comprehensive Example
In ASK mode, set an internal 2 kHz,1 Vpp sine wave as a carrier wave signal, make the frequency and amplitude
of the carrier wave to switch at a frequency of 200Hz, the setting steps as follows.
1) Enabling ASK mode
Press ModeShape ASK to turn on ASK mode.
2) Set Modulation Rate
Press soft key Rate and use numerical keyboard to input 200 and then select the unit of the parameter to
Hz.
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