event_filter
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event_filter [2016/03/16 15:36] pereira [S800 data format from Event Filter (S800 Filter)] |
event_filter [2016/03/16 15:53] pereira [Time-stamp packet] |
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| - | ==== Time-stamp packet ==== | + | ===== Time-stamp packet |
| The timestamp is encoded in the [[S800 USB DAQ data format#Tag 0x5803: XLM72 time stamp module|XLMV72 time-stamp module]] for each event as a 64-bit word. The Event Filter parses it as a set of four consecutive 16-bit words. | The timestamp is encoded in the [[S800 USB DAQ data format#Tag 0x5803: XLM72 time stamp module|XLMV72 time-stamp module]] for each event as a 64-bit word. The Event Filter parses it as a set of four consecutive 16-bit words. | ||
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| - | ==== Event-number packet ==== | + | ===== Event-number packet |
| The event-number is given by the VMUSB scaler channels as a 48-bit word coded in two 32-bit words. The Event Filter parses it and re-formats it as a three 16-bit words. | The event-number is given by the VMUSB scaler channels as a 48-bit word coded in two 32-bit words. The Event Filter parses it and re-formats it as a three 16-bit words. | ||
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| + | ===== Versioning system ===== | ||
| + | ATTENTION: This section needs to be updated!!!!! | ||
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| + | The detectors installed in the S800 and the data to be read from them often changes with the differing requirements of each experiment. This in turn impacts the details of the data format, and requires the use of a version number in order to be backward compatible. Subsequent changes to the S800 data acquisition will increment the version number of the data format and new configurations will be reflected in new packet tags. Documentation for these changes will be given here, in links accessible from the following table. The current version of the data format is indicated with a star. | ||
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| + | ^ S800_VERSION ^ Notes ^ Current Version | | ||
| + | | [[S800_VERSION 0x0004|0x0004]] | Last version using the SBS readout system, up to end December 2011 | | | ||
| + | | [[S800_VERSION 0x0005|0x0005]] | First version to use the VM/CC-USB parallel readout system, beginning January 2012 | | | ||
| + | | [[S800_VERSION 0x0006|0x0006]] | The S800_GALOTTE_PACKET is added for the Galotte MCP Object box detector | * | | ||
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event_filter.txt ยท Last modified: 2019/05/24 13:58 by pereira
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