PulsewidthPulse>Pw | After crossing the trigger level the signal must not cross the signal level again in the programmed pulsewidth. Could be used to trigger on noisy signals. | Pulse<Pw | The signal must cross the trigger level a second time in the programmed pulsewidth. Could be used to trigger on glitches and spikes. | TTL>Pw | A TTL pulse on the external trigger connector that is longer than the programmed pulsewidth. | TTL<Pw | A TTL pulse on the external trigger connector that is shorter than the programmed pulsewidth. |
The pulsewidth could be used in combination with several other trigger modes. This value defines the width of a pulse that must be reached or must not be reached for trigger detection. Most time used application is trigger detection in noisy signals. With the pulsewidth one could trigger on the selected edge of the signal even if the signal is noisy. 
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