Teledyne SP Devices ADQ7DC, Manual

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19-2233 PC2
2019-02-01
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ADQ7DC Manual
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7.4 Data transfer modes
The data transfer can be set up in two main ways:
•
Event-driven streaming, see Section 7.4.1 .
• User-scheduled multi-record, see Section 7.4.2 .
7.4.1 Streaming data transfer mode
The streaming mode is preferred for high-performance event-driven data transfer. This is the main
mode for both continuous streaming (
Section 7.3.1 ) and triggered streaming ( Section 7.3.2 ) acquisi-
tion. The flow is driven by the real-time acquisition in the digitizer. The software is set up to be prepared
to receive and process data when it arrives. Since the PC is not a real-time system, the data buffer
(
Section 7.2 ) on the ADQ is necessary. Each processing step in the software has to complete on time.
Otherwise there is a risk of overflow in the FIFO on the digitizer.