WIDAR Real-Time Data DisplayD. Del Rizzo

N ational R esearch C ounci lC anada

C onsei l national de recherchesC anada

EVLA Correlator Software f2f April 3-6, 2006

D Del RizzoApril 4, 2006

EVLA Correlator Software f2f – WIDAR Real-Time Data Display 2

Overview• What is the Real-Time Data Display (RTDD)?

A diagnostic tool, used primarily in prototype testing, to allow correlator developers the ability to efficiently probe various parts of the system and visualize output correlator data.

• Utilized extensively in prototype testing• Utility likely to extend well into correlator operation

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RTDD Environment

• Java

– Platform independent

– Self-contained application

– Remote access to system from any desktop

– Multiple sessions run simultaneously

• Utilizes Java 2D Graph package (USQ Dept. of Mathematics)

D Del RizzoApril 4, 2006

EVLA Correlator Software f2f – Widar Real-Time Data Display

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EVLA Correlator Software f2f – Widar Real-Time Data Display

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EVLA Correlator Software f2f – Widar Real-Time Data Display

RTDD Display Control

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EVLA Correlator Software f2f – Widar Real-Time Data Display

Input Chip Panel

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EVLA Correlator Software f2f – Widar Real-Time Data Display

Wideband Correlator Chip Panel

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EVLA Correlator Software f2f – Widar Real-Time Data Display

Output Chip Panel

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EVLA Correlator Software f2f – Widar Real-Time Data Display

Filter Chip PanelOutput State Counts

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EVLA Correlator Software f2f – Widar Real-Time Data Display

Filter Chip PanelRe-quantizer

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EVLA Correlator Software f2f – Widar Real-Time Data Display

Filter Chip PanelRFI Blanker

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EVLA Correlator Software f2f – Widar Real-Time Data Display

Filter Chip PanelClip Counter

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EVLA Correlator Software f2f – Widar Real-Time Data Display

Filter Chip PanelTone Extractor

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EVLA Correlator Software f2f – Widar Real-Time Data Display

Correlation CoefficientsWideband Lag/Frequency

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EVLA Correlator Software f2f – Widar Real-Time Data Display

Correlation CoefficientsSingle Lag/Frequency

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Outstanding Issues

• Data format for transfer?– ASDM?– Internal format (XML?)

• Connectivity/integration with correlator software• Access & permissions via distributed network

D Del RizzoApril 4, 2006

EVLA Correlator Software f2f – Widar Real-Time Data Display

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Summary

• A powerful tool for real-time correlator diagnostics – both during prototype testing and operations

• Finalizing data transfer formats essential • Early in design phase

– Input & suggestions welcome!

D Del RizzoApril 4, 2006

EVLA Correlator Software f2f – Widar Real-Time Data Display