Digital Pulse Processing for the Zero Length Encoding
DPP-ZLEPLUS
Free downloadable DPP-ZLEplus Trial version.
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The user can download and install DPP-ZLEplus firmware without any license key and use it with time frame limitation: every 30 min the user have to restart (Power off/power on) the board.
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To get time-unlimited operating DPP-ZLEplus the user should purchase a License.
The Zero Length Encoding (DPP-ZLEplus) firmware has been developed for the 725, 730, 740, 745 and 751 digitizer families. It allows the user to transfer the digitized waveforms in compressed mode, performing an enhanced Zero Suppression algorithm on the input signals.
DPP-ZLE continuously calculates the baseline of the input signals and, whenever a global trigger occurs (external trigger in case of 751 series), it searches for the significant input pulses within an user-defined Acquisition window. An input pulse is considered significant if it either exceeds an Upper Threshold or falls below a Lower Threshold referred either to the calculated baseline or absolute values in case of 751 series, or if it exceeds a single ZLE Threshold in case of 725, 730, 740 and 745 series.
It is possible to store not only the over threshold part of the significant pulses, but also the samples before and after the threshold crossing points by means of programmable Look Back and Look Forward windows.
A demo software (DPP-ZLEplus Demo Software) is available with C source files and Visual Studio project for a first approach to the DPP-ZLEplus algorithm principles and for a further personalization. The DPP-ZLEplus Demo software can also control and acquire data from multiple synchronized boards.
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Family |
751(*) |
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Channels |
Up to 16 |
Up to 16 |
Up to 64 |
Up to 8 |
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Max Sampling Rate |
250 MS/s |
500 MS/s |
125 MS/s |
1 GS/s |
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Resolution |
14-bit |
14-bit |
16-bit |
10-bit |
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Form Factor |
Desktop – NIM – VME |
Desktop – NIM – VME |
Desktop – VME |
Desktop – NIM – VME |
Applications
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Neutrino Experiments
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Read out of a large number of detectors following a global trigger
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Drift chambers, TPC, Cherenkov detectors
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Application requiring an effective data reduction
(*)NOTE: DPP-ZLEplus does not support 751 DES mode (2 GS/s sampling frequency).
Features
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Enhanced Zero Suppression of input signals
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Input signal baseline calculation
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ZLE Threshold (two values for 751 series)
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Programmable Look Back and Look Forward windows.
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Acquisition window synchronized with an external trigger or an internal global trigger (725-730 only)
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Provides also timing information (trigger time stamps)
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Compliant with:
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Source files and Visual Studio project available for free
DPP-ZLEPLUS: Manuals
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