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2.7 DIGITAL CONTROL UNIT .......................................................................................... 15 Mode of operation selection .............................................................................................. 15 3 CONTROLS AND CONNECTORS ............................................................ 16 3.1 FRONT PANEL................................................................................................................... 16 TEC-05X option ................................................................................................................. 17 3.2. REAR PANEL .................................................................................................................. 17 3.3. POTENTIAL HEADSTAGE......................................................................................... 18 TEC-05X option ................................................................................................................. 18 3.4. CURRENT HEADSTAGE ............................................................................................ 18 4 INSTALLATION................................................................................................................. 19 4.1. GENERAL CONSIDERATIONS.................................................................................. 19 Safety.................................................................................................................................. 19 Prevention of Line Interference ......................................................................................... 19 4.2. TESTS AND TUNING PROCEDURES ....................................................................... 20 General Considerations..................................................................................................... 20 Basic connections .............................................................................................................. 20 TEC Cell Model ................................................................................................................. 20 Adjustment of the CURRENT HEADSTAGE BIAS CURRENT control............................. 20 Test of the Current Clamp Mode ....................................................................................... 21 Test of the Voltage Clamp Mode........................................................................................ 21 Testing of the Zero Current / Zero Potential ..................................................................... 22 Resistance Measurement.................................................................................................... 22 Adjustment and Test of the Transient Compensation (TEC 10CX) ................................... 22 Oscillation Shut-Off ........................................................................................................... 22 5 CONTROL THEORY APPENDIX ................................................................................... 23 5.1 THEORY OF OPERATION OF THE TEC SERIES AMPLIFIERS .............................................. 23 EMPIRICAL TUNING PROCEDURE FOR PI CONTROLLERS ........................................................ 25 5.3 SPEED OF RESPONSE AND LINEARITY OF THE CAPACITIVE TRANSIENTS ....................... 25 6 REFERENCES .................................................................................................................... 28 7 TURBO TEC SERIES SPECIFICATIONS...................................................................... 31 3
