GE Alpha RT 32551 Installation Instructions Manual page 6

4.11 kV- regulation check....................................................................................................................................44
5 Setups, alignments and adjustments.................................................................47
5.1 Setup, alignment and adjustment prior to use ...............................................................................47
5.1.1 Initial setups ....................................................................................................................................................47
5.1.2 Setup Info Printout and printer/PC connection #62 InF .............................................................48
5.1.3 Service menu program #52 SUP ...........................................................................................................50
5.1.4 Service menu program #53 PAr.............................................................................................................53
5.1.5 Service menu program #64 AEC ...........................................................................................................56
5.1.6 Service menu program #65 tAr..............................................................................................................60
5.1.7 Error and exposure counters (Pr#58 CEC).........................................................................................62
5.1.8 Adjustment procedure during the installation................................................................................62
5.2 Alignment & adjustment............................................................................................................................63
5.2.1 Recommended test equipment .............................................................................................................63
5.2.2 Film processor evaluation ........................................................................................................................63
5.2.3 C-arm brake adjustment...........................................................................................................................64
5.2.4 C-arm angle display calibration (Pr#54 Can)...................................................................................66
5.2.5 Compression force display calibration (Pr#55 Cfo).......................................................................66
5.2.6 Compression thickness display calibration (Pr#56 Cth)..............................................................67
5.2.7 Compression force and speed adjustment with ECS...................................................................68
5.2.8 The mechanical compression limit.......................................................................................................71
5.2.9 kV, mAs and exposure time test ............................................................................................................73
5.2.10 Light field intensity adjustment..............................................................................................................74
5.2.11 X-ray field alignment...................................................................................................................................74
5.2.12 Light field alignment....................................................................................................................................75
5.2.13 Grid alignment and speed adjustment (Pr#61 bUC).....................................................................76
5.2.14 AEC adjustment .............................................................................................................................................77
5.2.15 Adjusting the AEC board............................................................................................................................82
5.2.16 Adjusting the optical density (=O.D)......................................................................................................83
5.2.17 Thickness compensation adjustment .................................................................................................85
5.2.18 kV compensation ..........................................................................................................................................86
5.2.19 Density programming.................................................................................................................................87
6 Alpha RT installation step by step ......................................................................89
6.1 Software block diagram ............................................................................................................................89
ii GE Healthcare 32551-IMG rev 6