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UTG1000A Series Function Generator User Manual
When modulation source is internal, frequency of modulation shape can be modulated. After enabling
PM function, the default of modulation shape frequency is 100Hz. If need to change, press Carrier
Wave Parameter→Modulation Frequency in turn, and the modulation frequency range is 2mHz to
50kHz. When modulation source is external, carrier waveform will be modulated by an external
waveform. The range of modulation signal input from external is 0Hz to 20Hz.
Phase Deviation Setting
Phase deviation indicates the change between the phases of PM modulated waveform and the phase
of carrier wave phase. Settable range of PM phase deviation is from 0º to 360º, and the default value is
50º. If need to change, press Parameter→Phase Deviation in turn.
Comprehensive Example
Firstly, make the instrument work in phase modulation (PM) mode, then set a sine wave with 200Hz
from the internal of the instrument as a modulation signal and a square with frequency of 900Hz and
amplitude of 100mVpp as a carrier wave signal. Finally, set the phase deviation to 200º. Specific steps
are seen as following:
1) Enable Phase Modulation (PM) Function
Press Menu→Modulation→Type→Phase Modulation in turn to start the PM function.
2) Set Modulation Signal Parameter
Press Parameter softkey and the interface will show as following:
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