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Using Modular Digitizer Acquisition Modes | Spectrum

Using Modular Digitizer Acquisition Modes
Modular digitizers offer many acquisition features matched to the primary application of acquiring multiple channels of input data and transferring that data at high rates to analysis computers. They also offer multiple acquisition modes that are intended to use on-board memory efficiently and decrease the dead time between acquisitions. This is especially true with signals that occur at low duty cycles in such applications as echo ranging (including radar, sonar, lidar, and ultrasound), and transient data collection applications (such as time of flight spectrometry and other stimulus-response based analysis).

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Read about basic acquisition configurations

Multiple Recording Mode

The Multiple Recording (segmented) mode allows the recording of multiple trigger events with an extremely short re-arm time. The acquisition memory is divided into several segments of equal size. One segment is filled for each trigger event. The acquisition stops between segments.

Gated Sampling Mode

Gated acquisition uses the state of a gating (enabling) signal, which can be either another channel or an external trigger input, to start and stop the sampling process. Data is only written to memory while the gate is active.

ABA Mode

ABA mode is a dual time base acquisition combining a fast acquisition on trigger events (B time base) with a slow sampling rate (A time base) between triggers.

Re-Arm Times

Details on re-arm (dead) time between segments for different configurations

Application Examples

See how the acquisition modes are used for different real world applications