User’s Manual UTG1000X Series
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Set Modulation Frequency
The frequency range is 2 mHz～1 MHz (the default is 100 Hz). When FM mode is enabled, the default frequency
of the modulation wave is 100 Hz. It can be change by multifunction rotary knob or press soft key ModFreq,
and then use numerical keyboard to input number and select unit soft key to complete the setting in FM mode.
Set Frequency Deviation
Frequency deviation indicates the frequency deviation of the wave that has been frequency modulated
which relative to the frequency of carrier wave. FM deviation range can set from the minimum DC to a half
of the currently maximum carrier wave frequency. The default frequency deviation is 1 kHz. It can be change
by ModFreq soft key in FM mode.
Frequency deviation ≤ Carrier wave frequency, if the frequency deviation is greater than the carrier
wave frequency, the instrument will automatically limits the deviation to the maximum which allowed
by the currently carrier frequency.
The sum of the frequency deviation and the carrier wave frequency ≤ the maximum of the currently
carrier frequency, if the frequency deviation value is invalid, the instrument will automatically limits the
deviation to the maximum which allowed by the currently carrier frequency.
Comprehensive Example
In FM mode, set an internal 2 kHz square wave as a modulating signal, another sine wave signal with frequency
10 kHz, amplitude 100 mVpp as the carrier wave and set frequency deviation to 5 kHz at last, the setting steps
as follows.
1) Enabling FM Mode
Press ModeShapeFM to turn on FM mode.
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