User manual

Chapter 2 Front Panel Operations RIGOL
DG800 User's Guide 2-43
To Set Phase Deviation
Phase deviation indicates the deviation of the modulating waveform phase from the
carrier waveform phase. Tap the Phas.Dev parameter input field and use the
numeric keypad to set the PM phase deviation.
 You can also use the arrow keys and the knob to input a desired phase value.
 The setting range of the phase deviation is from 0° to 360°, and the default is
90°.
When the external modulation source is selected, the phase deviation is controlled by
the ±5 V signal level on the rear-panel [CH1/Sync/Ext Mod/Trig/FSK] connector.
For example, if the phase deviation is set to 180°, +5 V signal level corresponds to a
180º phase variation. The lower external signal levels produce less deviation.