Positioning the Model 35300A Detector in the Beam | Fluke 90100

Model 90100

Operators Manual

4.Power can now be applied to the system. Wait for the Test/Detector screen shown below before pressing any keys.

Reverse the above procedure to disconnect the interface cable from the 35300A Detector.

WARNING

Always turn the Model 35360A TRACKER Display's power off prior to connecting or disconnecting the interface cable. Failure to do so may result in an electrical shock.

2.2.3 RS-232 Computer Interface (RJ-45 Style)

The RS-232 Computer Interface provides a means for computer controlled factory test and calibration. It is also used in conjunction with the Customization program during the user customization process.

2.3 Positioning the Model 35300A Detector in the Beam

Proper and consistent positioning of the 35300A Detector is necessary for reliable measurement results. The 35300A Detector has a printed overlay on both of its flat surfaces to indicate the location of the five detectors inside the assembly. The overlays also include a black cross-hair to aid in centering the device in the treatment beam.

The 35300A Detector should be placed so that the center detector will be in the center of the treatment beam. For a gantry angle of 0 degrees, place the 35300A Detector on the treatment table with the axis label face up, and the connector facing away from the gantry. The "TOP" chamber should be the one nearest the gantry. This placement is shown in Figure 2-4.

2-4

Image 16

Fluke 90100 manual Positioning the Model 35300A Detector in the Beam, 3 RS-232 Computer Interface RJ-45 Style

Contents

Model Tracker System Fluke Biomedical Table of Contents Maintenance and Service Appendix a Using Build-UpTheory of Operation Customization General Information Introduction Features Model Before You Start Safety Precautions Safety TermsSpecifications Manual Addenda Nominal Ion Chamber Characteristics Mechanical SpecificationsRecommended Operation Conditions Ion Chamber Factory Calibration Measurements Mode Display ModeModel 35360A Tracker Display Electrometer / A-D Converter High Performance Battery Charger Unpacking and InspectionInterface Cable Detector to Display Environment Standard System Contents Optional Equipment Blank Operation Rear Panel Familiarization Powering the System Detector Input Display. Be sure to use the correct end of the cable Positioning the Model 35300A Detector in the Beam 3 RS-232 Computer Interface RJ-45 Style Operation Positioning the Model 353300A Detector in the Beam Operation Instructions Front Panel Controls Power ResetTest/Detector Units Select Powering Down the Model 35360A Tracker Display Powering Up the Model 35360A Tracker DisplayUsing the TEST/DETECTOR Button Using the Units Select Button Test/Detector Screen 2 Ion Chamber Calibration Factors Using the AIR Density Button Using the Gain Select Button Normal Mode Using the Measure Select Button Normal Mode Absolute Measurements Percent-of-Center Measurements Battery and Bias Annunciators Underranging and Overranging Conditions Gain Setting Mode 24. Positions of the Battery and Bias Annunciators Saving the Fpgf Changes Aborting the Fpgf Changes Blank Theory of Operation Power Supply Hardware Block Diagram of the Model 35360A Tracker Display Front Panel Switches 2 300-VOLT Electronic Bias SupplyProcessor VFD Display Electrometer Serial Communications PortMultiplexer and A/D Converter Model 35300A Ion Chamber Detectors Air Density Corrections Basic Operating Equations Basic Operating Quantities Blank Maintenance & Service Troubleshooting Problem No Display Flowchart Low Battery Indication at the Display Low battery Yes Annuciator displayed? Bias Error LoBias or HiBias Indication at the Display 35360A Tracker Leakage Flowchart Line Fuse Replacement Dose Rate Measurement Zero Problem Flowchart If fuses continue to blow return instrument for repair Cleaning the Instrument Interface Connector CleaningReplaceable Parts Information Replaceable Parts List Recalibration & Repair Information / Technical Assistance Customization Make a Working Disk Connection to the ComputerStarting the Customization Software Screen Formats Display Customization Items Screen Appearance F1 Help On-Line Help for using the Customization software F2 Edit Item EditingF6 Print Report Printing F10 Exit Definitions Setting the Electrometer Gains and Offsets Charge Gain QGCurrent Gain, Current Zero IG and ADZ Ion Chamber Calibration Factor Iccf Electrometer Current Gain IG Electrometer Charge Gains QG Changing the Power Down Interval Usage Examples Changing the ION Chamber Calibration Factor Units Errors Input Errors Using Build-Up Build-Up, Peg, and Retainer Kit Options Nominal Number of build-up Solid Water Appendix Fluke Biomedical