3 phase supply using two waveform generators
3 phase supply using two waveform generators
Operational "How to" GuidesSummaryThis guide outlines how to create a 3 phase supply with two waveform generatorsDescription Generator 1 (2 channels): Channel 1: Frequency: 1kHz ( adjust as required) Amplitude: 10Vp-p Offset: 0 V Phase : 0° Channel 2: You can couple the two channels’ frequency by pressing the channel number hard key> More> Dual Channel> Freq Cpl ON You can also choose to couple the amplitudes under the dual channel menu Frequency 1kHz Amplitude: 10Vp-p Offset: 0V Phase: leave phase at 0 for now Generator 2 (only 1 channel necessary): ***important to select external 10 MHz reference*** System>Instr Setup> 10MHz Ref Osc>Source>External Channel 1 (further referred to as channel 3) Frequency 1kHz Amplitude: 10Vp-p Offset: 0V Phase: leave phase at 0 for now On the oscilloscope, measure the phase difference between channel 1 and channel 2. Press the channel 2 hard key and press the parameters hard key. Then press the phase softkey. Adjust the phase so that the oscilloscope measures ~0 degrees phase between channel 1 and channel 2. Press the Set 0 phase soft key. This will now set the adjusted phase referenced to channel 1 to the 0 reference. Channel 1 and 2 are now “coupled” in phase. (note this is is only as accurate as the oscilloscope measurement and the resolution of the phase adjustment) Press the phase softkey, and set the phase of channel 2 to 120 degrees Do the same for channel 3 (generator 2, channel 1) only this time set phase of the channel to 240 degrees On the oscilloscope you should observe that the phase difference measurements are 120 degrees between channel 1 and 2, and 240 degrees between channel 1 and 3 Attachments