4.2.3 Pulse output modes
The pulse unit sends an 8-µs signal each time a particle is detected. A data acquisition system installed by the user and connected to an output channel counts the pulses. The data can be sent in one of 2 count modes—differential or cumulative (Figure 25).
• Differential mode—a signal is sent on the first channel when a particle is between the first and the second size thresholds. A signal is sent on the second channel when a particle is larger than the second size threshold.
• Cumulative mode—a signal is sent on the first channel when a particle is larger than the first or the second size threshold. A signal is sent on the second channel when a particle is larger than the second size threshold.
Note: The count mode can be configured by the factory. The default setting is differential. Pulse units cannot be networked.