Teledyne 401 - page 5

Teledyne API Model 401 O3 Photometric Calibrator Instruction Manual, 01124, Rev. J2

5.2.1 D/A Output.............................................................................................................................. 5-2

6 HANDLING WARNINGS................................................................................ 6-1

7 RS-232 COMMUNICATIONS......................................................................... 7-1

7.1 DAS REPORTING.............................................................................................................................7-2

7.2 WARNINGS...................................................................................................................................... 7-3

7.3 STATUS/CONTROL...........................................................................................................................7-4

7.4 DIAGNOSTICS.................................................................................................................................. 7-6

7.5 TEST MEASUREMENTS.................................................................................................................... 7-7

7.6 VIEWING AND MODIFYING VARIABLES.......................................................................................... 7-8

8 ADJUSTMENTS............................................................................................. 8-1

8.1 POWER SUPPLY BOARD ADJUSTMENT.............................................................................................8-1

8.1.1 Box Temperature Limits..........................................................................................................8-1

8.2 A/D - D/A CALIBRATION PROCEDURE............................................................................................ 8-3

8.3 OUTPUT VOLTAGE RANGE CHANGES..............................................................................................8-4

8.4 FLOW READOUT ADJUSTMENT........................................................................................................8-4

8.5 DC POWER SUPPLY.........................................................................................................................8-6

8.6 CPU................................................................................................................................................ 8-6

8.7 STATUS LINES................................................................................................................................. 8-7

8.8 UV LAMP POWER SUPPLY ADJUSTMENT ........................................................................................8-7

8.9 OZONE GENERATOR LAMP SETUP...................................................................................................8-8

8.10 OZONE GENERATOR CALIBRATION............................................................................................... 8-9

8.11 DARK CURRENT SIGNAL ADJUST PROCEDURE.............................................................................. 8-9

8.12 BENCH FEEDBACK OPTION..........................................................................................................8-10

9 TROUBLESHOOTING ................................................................................... 9-1

9.1 OVERVIEW...................................................................................................................................... 9-1

9.2 TROUBLESHOOTING FUNDAMENTAL CALIBRATOR OPERATION...................................................... 9-1

9.2.1 Checking The Power Sub-Systems.......................................................................................... 9-2

9.2.2 Checking The CPU And Display.............................................................................................9-3

9.2.3 Checking The Keyboard..........................................................................................................9-3

9.3 TROUBLESHOOTING USING WARNING MESSAGES...........................................................................9-3

9.4 TROUBLESHOOTING USING TEST FUNCTION VALUES .....................................................................9-5

9.5 TROUBLESHOOTING DYNAMIC PROBLEMS...................................................................................... 9-6

9.5.1 Noisy Or Unstable Readings At Zero .....................................................................................9-7

9.5.2 Noisy, Unstable, Or Non-Linear Span Readings.................................................................... 9-7

9.5.3 Slow Response To Changes In Concentration........................................................................ 9-7

9.5.4 Analog Outputs Do Not Agree With Front Panel Readings................................................... 9-8

9.5.5 Cannot Zero............................................................................................................................ 9-8

9.5.6 Cannot Span............................................................................................................................9-8

9.6 TROUBLESHOOTING INDIVIDUAL SUB-ASSEMBLIES AND COMPONENTS......................................... 9-9

9.6.1 Troubleshooting Flow Problems ............................................................................................9-9

9.6.2 Troubleshooting Temperature Problems.............................................................................. 9-10

9.6.3 Checking The V/F Card........................................................................................................ 9-11