Fluke 90100 manual Power Supply, Hardware Block Diagram of the Model 35360A Tracker Display

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Model 90100

Operators Manual

BATTERY

STATUS

Figure 3-1. Hardware Block Diagram of the Model 35360A TRACKER Display

3.2.1 Power Supply

The Power Supply converts AC line power in the range of 100 to 240 VAC, or 6 VDC from the internal rechargeable battery pack, to the various DC voltage levels that are used to power all of the other blocks of the system. These interconnections have been omitted from the diagram for clarity. The Power Supply also includes a high performance charger for the internal Battery Pack. This Battery Pack will normally provide a continuous operational life of approximately 8 hours on one charge. The batteries may be charged in about 2 to 3 hours and charging will take place even when the instrument is in use. When the batteries have reached their fully charged level, the charger automatically enters a trickle charge mode. During trickle charging, the user need not be concerned about over charging the batteries. This mode will maintain the Battery Pack at its fully charged condition indefinitely.

When operating from batteries, an automatic turn off feature may be used to power down the unit after a user-defined period of inactivity. A low battery annunciator is displayed when less than 30 minutes of the useful battery life remains, and an automatic power down will occur when the Battery Pack is completely exhausted. All front panel settings are automatically stored at power down and restored at power up.

Thus, the need to reconfigure the front panel settings upon each use has been eliminated.

Although the Power Supply is under the control of the microcontroller during normal operation through the Power Control connection shown, it is forced to turn on when the operator presses the front panel Power On/Off button. The BATTERY STATUS connection between the Power Supply and the Processor blocks provides the means by which the microcontroller can monitor the battery voltage and thus detect low and exhausted batteries. This voltage is automatically displayed during the power up sequence and may be viewed at any time on one of the test screens.

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Contents Model Tracker SystemFluke Biomedical Table of Contents Theory of Operation Maintenance and ServiceAppendix a Using Build-Up CustomizationGeneral Information IntroductionFeatures ModelSpecifications Before You Start Safety PrecautionsSafety Terms Manual AddendaRecommended Operation Conditions Nominal Ion Chamber CharacteristicsMechanical Specifications Ion Chamber Factory CalibrationModel 35360A Tracker Display Measurements ModeDisplay Mode Electrometer / A-D ConverterInterface Cable Detector to Display High Performance Battery ChargerUnpacking and Inspection EnvironmentStandard System Contents Optional EquipmentBlank Operation Rear Panel FamiliarizationPowering the System Detector InputDisplay. 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 StyleOperation Positioning the Model 353300A Detector in the Beam Operation Instructions Front Panel ControlsTest/Detector PowerReset Units SelectPowering Up the Model 35360A Tracker Display Powering Down the Model 35360A Tracker DisplayUsing the TEST/DETECTOR Button Using the Units Select Button Test/Detector Screen 2 Ion Chamber Calibration FactorsUsing the AIR Density Button Using the Gain Select Button Normal ModeUsing the Measure Select Button Normal Mode Absolute MeasurementsPercent-of-Center Measurements Battery and Bias Annunciators Underranging and Overranging ConditionsGain Setting Mode 24. Positions of the Battery and Bias AnnunciatorsSaving the Fpgf Changes Aborting the Fpgf ChangesBlank Theory of Operation Power Supply Hardware Block Diagram of the Model 35360A Tracker DisplayProcessor Front Panel Switches2 300-VOLT Electronic Bias Supply VFD DisplaySerial Communications Port ElectrometerMultiplexer and A/D Converter Model 35300A Ion Chamber Detectors Air Density CorrectionsBasic Operating Equations Basic Operating Quantities Blank Maintenance & Service Troubleshooting ProblemNo Display Flowchart Low Battery Indication at the Display Low battery Yes Annuciator displayed?Bias Error LoBias or HiBias Indication at the Display 35360A TrackerLeakage Flowchart Line Fuse Replacement Dose Rate Measurement Zero Problem FlowchartIf fuses continue to blow return instrument for repair Interface Connector Cleaning Cleaning the InstrumentReplaceable Parts Information Replaceable Parts List Recalibration & Repair Information / Technical AssistanceCustomization Starting the Customization Software Make a Working DiskConnection to the Computer Screen FormatsDisplay Customization Items Screen Appearance F6 Print Report Printing F1 Help On-Line Help for using the Customization softwareF2 Edit Item Editing F10 ExitDefinitions Current Gain, Current Zero IG and ADZ Setting the Electrometer Gains and OffsetsCharge Gain QG Ion Chamber Calibration Factor IccfElectrometer Current Gain IG Electrometer Charge Gains QGChanging the Power Down Interval Usage ExamplesChanging the ION Chamber Calibration Factor Units Errors Input ErrorsUsing Build-Up Build-Up, Peg, and Retainer Kit OptionsNominal Number of build-up Solid Water Appendix Fluke Biomedical