The Multiple Recording option allows a series of trigger events to be recorded without restarting the UltraFast board. This is often used to record a series of high-speed waveforms that occur at a very high repetition rate, such as RADAR, Lidar or spectroscopy signals.
The user prepares the measurement by defining the number of signals that need to be recorded. The onboard signal memory is then divided into the same number of memory segments that are the same size as each signal to be recorded. Each segment must be the same length.
When a trigger event is detected, the recording starts and the data is automatically transferred to the next available segment. Special onboard hardware then automatically re-arms the trigger ready for the next trigger event to occur. The dead time between the end of recording one segment and the next start of recording, is typically only a few samples - potentially thousands of waveforms can be recorded in a second.
Pretrigger is not available when using Multiple Recording with the UF series of cards.
Multiple Recording can be combined with the Time Stamp option so that the trigger events times are also recorded.
See also:
- Multiple Replay
- Time Stamp
- Gated Sampling