Teledyne GFC7001T User Manual Page 15

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Table of ContentsTeledyne API – Model T300/T300M CO Analyzer
Teledyne Analytical Instruments xv
13.4.2.3. GFC Wheel .................................................................................................................................300
13.4.2.4. IR Photo-Detector .......................................................................................................................302
13.4.3. Synchronous Demodulator (Sync/Demod) Assembly .......................................................................302
13.4.3.1. Signal Synchronization and Demodulation ................................................................................303
13.4.3.2. Sync/Demod Status LEDs ..........................................................................................................304
13.4.3.3. Photo-Detector Temperature Control .........................................................................................304
13.4.3.4. Dark Calibration Switch ..............................................................................................................305
13.4.3.5. Electric Test Switch ....................................................................................................................305
13.4.4. Relay Board .......................................................................................................................................305
13.4.4.1. Heater Control ............................................................................................................................305
13.4.4.2. GFC Wheel Motor Control ..........................................................................................................305
13.4.4.3. Zero/Span Valve Options ...........................................................................................................306
13.4.4.4. IR Source ....................................................................................................................................306
13.4.4.5. Status LEDs ................................................................................................................................306
13.4.4.6. I2C Watch Dog Circuitry .............................................................................................................307
13.4.5. MotherBoard ......................................................................................................................................307
13.4.5.1. A to D Conversion ......................................................................................................................307
13.4.5.2. Sensor Inputs .............................................................................................................................308
13.4.5.3. Thermistor Interface ...................................................................................................................308
13.4.5.4. Analog Outputs ...........................................................................................................................309
13.4.5.5. Internal Digital I/O .......................................................................................................................309
13.4.5.6. External Digital I/O ......................................................................................................................309
13.4.6. I
2
C Data Bus ......................................................................................................................................309
13.4.7. Power Supply/ Circuit Breaker ...........................................................................................................310
13.4.8. Front Panel Touchscreen/Display Interface .......................................................................................312
13.4.8.1. LVDS Transmitter Board ............................................................................................................312
13.4.8.2. Front Panel Touchscreen/Display Interface PCA .......................................................................312
13.5. Software Operation ..................................................................................................................................313
13.5.1. Adaptive Filter ....................................................................................................................................313
13.5.2. Calibration - Slope and Offset ............................................................................................................314
13.5.3. Measurement Algorithm .....................................................................................................................314
13.5.4. Temperature and Pressure Compensation ........................................................................................314
13.5.5. Internal Data Acquisition System (DAS) ............................................................................................314
14. A PRIMER ON ELECTRO-STATIC DISCHARGE .......................................................... 315
14.1. How Static Charges are Created .............................................................................................................315
14.2. How Electro-Static Charges Cause Damage ..........................................................................................316
14.3. Common Myths About ESD Damage ......................................................................................................317
14.4. Basic Principles of Static Control .............................................................................................................318
14.4.1. General Rules ....................................................................................................................................318
14.4.2. Basic anti-ESD Procedures for Analyzer Repair and Maintenance ..................................................319
14.4.2.1. Working at the Instrument Rack .................................................................................................320
14.4.2.2. Working at an Anti-ESD Work Bench .........................................................................................320
14.4.2.3. Transferring Components from Rack to Bench and Back ..........................................................320
14.4.2.4. Opening Shipments from Teledyne Customer Service ..............................................................321
14.4.2.5. Packing Components for Return to Teledyne Customer Service ..............................................322
GLOSSARY ................................................................................................................ 323
LIST OF APPENDICES
APPENDIX A - VERSION SPECIFIC SOFTWARE DOCUMENTATION
APPENDIX B - GFC7001T/GFC7001TM SPARE PARTS LIST
APPENDIX C - REPAIR QUESTIONNAIRE - GFC7001T
APPENDIX D - SCHEMATICS
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