Trigger timeout Sample Clauses

Trigger timeout. AlazarTech digitizer boards can be configured to automatically trigger when the board is waiting for a trigger event, but no trigger events arrive after a specified time interval. This behavior is similar to the “automatic” trigger mode of oscilloscopes, and may be useful to capture waveforms when trigger conditions are unknown. Call AlazarSetTriggerTimeOut to specify the amount of time that a board should wait for a hardware trigger event before automatically generating a software trigger event and, as a result, acquiring one record. The timeout value is expressed in 10 μs units, where 0 means disable the timeout counter and wait forever for a trigger event. The trigger timeout value should be set to zero once stable trigger parameters have been found. Otherwise, a board may generate unexpected trigger events if the trigger timeout interval expires before a hardware trigger event occurs. The following code fragment configures a board to automatically trigger and acquire one record if it does not receive a trigger event after 1 ms. double timeout_sec = 1.e-3; // 1 ms U32 timeout_ticks = (U32)(timeout_sec / 10.e-6 + 0.5); AlazarSetTriggerTimeOut( boardHandle, // HANDLE -- board handle timeout_ticks // U32 – timeout_sec / 10.e-6 (0 = infinite) ); The following code fragment configures a board to wait forever for trigger events. AlazarSetTriggerTimeOut( boardHandle, // HANDLE -- board handle 0 // U32 -- timeout_sec / 10.e-6 (0 = infinite) );