ADLINK DAQe-2502 - Manual (Page 65)

Operation Theory 55
High-Hysteresis Analog Trigger Condition
Figure 4-29 shows the high-hysteresis analog trigger condition.
The trigger signal asserts when the input analog signal level is
higher than the High_Threshold voltage, where the hysteresis
region is determined by the Low_Threshold voltage.
Figure 4-29: High-Hysteresis Analog Trigger Condition
Low-Hysteresis Analog trigger condition
Figure 4-30 shows the low-hysteresis analog trigger condition.
The trigger signal asserts when the input analog signal level is
lower than the Low_Threshold voltage where the hysteresis
region is determined by the High_Threshold voltage.
Figure 4-30: Low-Hysteresis Analog Trigger Condition