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PDR Guidelines

The purpose of the Preliminary Design Review (PDR) for the EVLA Subsystem is to address three key questions: 1) Are the top-level performance requirements for the subsystem complete and adequate? 2) Have appropriate design solutions been chosen for development in the EVLA Design Phase, and are there viable alternatives not currently under consideration? 3) Is there a sufficient procurement plan in place for the subsystem? This document outlines the project timeline, including significant milestones such as the installation of prototype systems, electronic production starts, and the operational declaration of the correlator.

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PDR Guidelines

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  1. PDR Guidelines The purpose of the PDR of an EVLA Subsystem is principally to review 3 questions: • Are the top level performance requirements for the subsystem complete and adequate? • Have the correct design solutions been selected for study and development during the EVLA Design Phase? Are there important alternate solutions that are not being studied. • Has an adequate procurement plan been identified for the subsystem? Meeting Title Date

  2. Project Schedule • Install prototype EVLA system on EVLA Test Antenna(s) Q2 2003 • Start EVLA electronics production Q4 2003 • Start retrofitting 7 antennas/year with new electronics system Q2 2004 • Start observing in “transition” mode Q2 2004 • Test of prototype correlator on 3 or 4 antennas Q4 2005 • Start outfitting new correlator room Q2 2006 • Start tests of first correlator subset at VLA Q4 2006 • First “shared-risk” science with new correlator subset Q2 2007 • Last antenna retrofitted to EVLA design Q1 2008 • New correlator declared “operational” Q1 2009 • Last EVLA receiver installed Q1 2010 Meeting Title Date

  3. Meeting Title Date

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