RETURN_CODE AlazarGetTriggerAddress(HANDLE handle, U32 Record, U32 *TriggerAddress, U32 *TimeStampHighPart, U32 *TimeStampLowPart)#
Get the timestamp and trigger address of the trigger event in a record acquired to on-board memory.
The following code fragment demonstrates how to convert the trigger timestamp returned by AlazarGetTriggerAddress() from counts to seconds.
__int64 timeStamp_cnt; timeStamp_cnt = ((__int64) timestampHighPart) << 8; timeStamp_cnt |= timestampLowPart & 0x0ff; double samplesPerTimestampCount = 2; // board specific constant double samplesPerSec = 50.e6; // sample rate double timeStamp_sec = (double) samplesPerTimestampCount * timeStamp_cnt / samplesPerSec;
The sample per timestamp count value depends on the board model. See board-specific information to know which value applies to which board.
This function can be used in single-port acquisitions only.
handle – [in] Board handle
Record – [in] Record in acquisition (1-indexed)
TriggerAddress – [out] The trigger address
TimeStampHighPart – [out] The most significant 32-bits of a record timestamp
TimeStampLowPart – [out] The least significant 8-bits of a record timestamp
ApiError2 (604) if it is called after a dual-port acquisition. This function should be called after a single-port acquisition only.