c8d97993_ator_Guidebook___B_K_Precision__Function
[Control] 18 [Purpose] Selects the type of operation: continuous output, trigger repetition rate (sets the interval between the internal trigger; each trigger signal causes the generator to output one period), external trigger, manual trigger (pressing the → button causes one cycle to be output), or external gated (waveform cycles are output while the gate signal is above a threshold). [Function] 
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Function & Arbitrary Waveform Generator Guidebook - B&K Precision
Function