# Presentation: 191799

## Section 4

_***Section 4***_
***Pre-T/V II CPT Results***
***& Procedure Status***

*** ******. . . Mark Perry***
*EO-1 Systems Engineer*

## Contents

***Contents***

***Hardware configuration***
***Software configuration***
***Changes since the post-environmental CPT***
***Preliminary status of problem reports (PRs)***
***Procedure deviations***
***Summary of CPT results***
***Duration of each CPT section***

## CPT Hardware Configuration

***CPT Hardware Configuration***

***All hardware in flight configuration except for the following***
***AST not integrated due to delays in DC/DC converter work. ******Will be integrated for T/V test. Data simulated by bus monitor.***
***Used non-flight battery with GSE fuse plugs***
***AC tech inhibitor cables installed (permit operation in ambient)***
***Need final close-outs for equipment bays 1, 2 and 4***
*Bay 2 (ACDS)  & Bay 4 (PSE) open during CPT*
*Bay 1 (WARP) closed, but will be re-opened for final close-outs*
***Hyperion electronics boxes will be de-integrated for Bay 1 work***
***S/A not mounted; higher priority to exercise SAD***
***MLI removed to permit bays to open***
***GSE connected (Power, C&T hardlines, APTS, RF hat couplers, RCS, HOPs, etc.)***

## CPT Software Configuration

***CPT Software Configuration***

***All software in flight configuration except for ACE RSN***
***For T/V II, two lines changed in ACE code in CCB on ******June 1, 2000***
***Change upper memory default checksum parameters***
***Prevent ACE event messages from overwhelming the M5 events buffer***
***See ACS presentation for details of these changes***

## Changes Since Post-Environmental CPT (12/99)

***Changes Since Post-Environmental CPT (12/99)***

***Nadir-deck heaters and thermostats replaced and re-wired***
***WARP LVPC repaired; 1773 feed-throughs replaced***
***LVPC and HOP fuse plugs installed***
***LFSA electrical interface improved***
***Interpoint DC-DC converter stiffeners added***
***ACDS (2), AST (2), GPS PCU***
***IRU venting characterized and excess leakage minimized.  Purge improved to reduce helium infiltration***
***Battery trickle-charge fuse replaced with diode (not used in flight)***
***Much of EO-1 de-integrated and re-integrated due to above work***
***Final flight S/W loaded***
***Errors in command and telemetry database corrected***
***Errors in CPT procedures  corrected***

## PR Status

***PR Status***

***No hardware or software problems***
***6 PRs, all in closeout process (WOA 1035-20-1, 20-3, WOA 1037-20-1)***
***ASIST/operator error caused loss of ALI cal-lamp data in CPT 7 and CPT8***
*Operator initially responded incorrectly to a hazardous command (GO instead of ALLOW TOP)*
*ASIST kept the command in a queue and mis-handled later command (MOC ASIST has corrected this problem)*
*Delayed an ALI command, causing ALI red limit (no damage to ALI)*
***2 nominal conditions initially perceived as an error ***
*New TSM event messages enabled*
*Battery-charge control toggles between trickle and V/T*
***3 procedure errors***
*Data changed before a procedure could verify that the data was correct*
*Hyperion cover shows closed status after reset*
*Checksum error caused when CS not re-calculated after code changed*

## Problem Reports for Each EO-1 CPT

**II**

## Procedure Status

***Procedure Status***

***33 Procedure deviations during CPT***
***8 typos or format errors***
***4 incomplete or incorrect adaptation to S/W changes: ACE timeout; ACS FDC enable; heater loads not shed in RTS***
***2 operator errors***
***4 limits: new limits implemented***
***3 information or warning statements added***
***5 timing errors: event occur before or after proc expects them***
***3 configuration issues: SAD at +90; no Hyperion GSE; new RTS file***
***4 other errors: post-test cleanup (2); missing command; incorrect tests***
***All corrections implemented for T/V II***
***CPT procedures are frozen for T/V: changes require CCB approval***
***Most T/V procedures are MOC or variants of CPT procedures***
***All procedures are ready for T/V II***

## Results

***Results***

***Results of all tests and analyses to date, are nominal***
***Considered successful!***
***Ready for T/V II***

## Timeline of Pre-T/V CPT

***Timeline of Pre-T/V CPT***