M. Nielbock; 13-Nov-2007

Index TableOfContents(2)


1. IST Chopper Day at Astrium (2007-11-13)


According to Sect. 11 of the PACS IST Procedure Document (PACS-ME-TP-021, Issue 2.5), we will verify the functionality of the PACS chopper during an espiacially dedicated "Chopper Day" during FM-IST at Astrium. This includes three steps for both the nominal and redundant operations.

1.1. Chopper Zero-Point Offset Nulling

1.2. Verify Stability of the Chopper

The command sequence is:

  1. WriteOBSID_ast_OBS b. CONF_chopper_ast_OBS_Shell

    c. PACS_Chopper_EnDis_Test_ast1_OBS_Shell d. CONF_chopper_ast_OBS_Shell e. PACS_Chopper_EnDis_Test_ast300_OBS_Shell f. CONF_chopper_ast_OBS_Shell g. PACS_Chopper_EnDis_PlateauTest_ast_OBS_Shell

1.3. Chopper Controller Optimisation