ECR Title: ECR: Add missing ALS/REFL signals to real-time system	DCC No: E1300402-v1
Date: 5/8/2013
Requester: Daniel Sigg	Impacted Subsystem(s): ISC
Description of Proposed Change(s): Proposed changes: - Add a 3rd ADC and anti-aliasing chassis to the LSC corner real-time system (D1100170, D1200666, T1100472, D1001427) - Wire the REFLAIR_A_RF9 (I and Q) into the whitening chassis #20/cable 30 (D1100170, D1200666) - Wire the REFL_A_RF9 (I and Q) into the whitening chassis #22/cable 31 (D1100170, D1200666) - Wire ALS COMM_A_RF and DIFF_A_RF to LSC RF PD INTERFACE #13 - (Re)wire LSC RF PD INTERFACE #13 to 3rd ADC chn 1 - Wire Summing node board to 3rd ADC chn 2 - (Re)wire cable 259 from generic interface #3 to Auxiliary Signals Concentrator 3 #93 PD DC IN - Wire Auxiliary Signals Concentrator 3 #93 PD DC OUT to ADC0_1 (cable 259) - Wire Auxiliary Signals Concentrator 3 #93 PD DC Mon 1 to Summing junction input 2 - Fix wiring for summing node
Reason for Change(s): These channels were ‘forgotten’ from the design.
Estimated Cost: 3 ADC at no additional cost (from spares) 3 anti-aliasing chassis at no additional cost (from spares) New wiring ($3000)
Schedule Impact Estimate: None.
Nature of Change (check all that apply): Safety Correct Hardware Correct Documentation	Improve Hardware Improve/clarify Documentation Change Interface Change Requirement
Importance: Desirable for ease of use, maintenance, safety Desirable for improved performance, reliability Essential for performance, reliability Essential for function Essential for safety	Urgency: no urgency desirable by date/event: __June 2013__ Essential by date/event: __HIFO_X___ Immediately (ASAP)
Impacted Hardware (select all that apply): Repair/modify. List part & SNs: ______________________ Scrap & Replace. List part & SNs:_____________________ Installed units? List IFO, part & SNs: _________________ Future units to be built	Impacted Documentation (list all dwgs, design reports, test reports, specifications, etc.): D1100170, D1200666, E1200408, T1100472, D1001427
Disposition (to be completed by Systems Engineering): TRB CCB Approved Additional information required. Define: [Requester re-submits with new information with the same DCC E-number for the ECR but the next version number.] Concurrence by Project Management: (Acknowledged Electronically in DCC) Project Systems Engineer: Dennis Coyne Project Systems Scientist: Peter Fritschel