Gw Instek GDS-2304A 4-channel oscilloscope, Digital Storage oscilloscope, GDS-2304A Datenbogen

Timeout 

Triggers when the signal stays high, low or either 
for a designated amount of time. The trigger level 
determines when a signal is high or low. 

 

A

B

C

 

A  Trigger level threshold 

B  Timer 

C  Triggering point