GEN7iB
160
INTERFACE/CONTROLLER
INTERFACE/CONTROLLER
11
The External stopmodesettingcanbeusedtoconguretheexternalstopinput.
A When selecting Disabled, the signal on the input is ignored.
B When selecting Rising Edge, a stop is initiated when a rising edge is detected.
C When selecting Falling Edge, a stop is initiated when a falling edge is detected.
The minimum pulse width for both External Start In and External Stop In is 500 ns.
Pulsesshorterthan500nswillbeignored,otherpulselengthscanbecongured.
As the Start/Stop events are software processed events, a one second response time
typically passes before the Start/Stop is executed. After an event is received, a “dis-
able” time period of 100 ms starts. The same event will not be detected during the dis-
able time period. For example, if a Start event is received, a new Start event will not be
detected for 100 ms. If, however, a Stop event occurred immediately after a Start event
had been detected, the Stop event would be detected and processed immediately after
the acquisition is started due to the Start event.