vii
7.4.4 Setup Commands ........................................................................................................................................... 78
7.4.5 Speed Commands ........................................................................................................................................... 79
7.4.6 Torque Commands ......................................................................................................................................... 81
7.4.7 Miscellaneous Commands ............................................................................................................................. 82
7.4.8 Quadrature Commands................................................................................................................................... 83
7.5 6001 MODE ................................................................................................................................................................. 84
8. OPTIONAL EQUIPMENT .................................................................................................................. 85
8.1 I/O CARD 1 AND I/O CARD 2 ................................................................................................................................... 85
8.1.1 I/O Card Installation ....................................................................................................................................... 85
8.1.2 I/O Card Interface .......................................................................................................................................... 87
8.1.3 I/O Card Configuration .................................................................................................................................. 89
8.1.4 I/O Card 1/Card 2 Command Set ................................................................................................................... 92
8.2 GPIB INTERFACE ...................................................................................................................................................... 93
8.2.1 GPIB Card Installation ................................................................................................................................... 93
8.2.2 About the GPIB Interface ............................................................................................................................... 94
8.2.3 Installing the GPIB (IEEE-488) Connector Cable ......................................................................................... 95
8.2.4 Changing the GPIB Primary Address ............................................................................................................ 95
8.3 RS232 INTERFACE ..................................................................................................................................................... 96
8.3.1 RS-232 Installation......................................................................................................................................... 96
8.3.2 Connection ..................................................................................................................................................... 97
8.3.3 Communication Parameters ........................................................................................................................... 98
8.3.4 Baud Rate ....................................................................................................................................................... 98
8.4 CHECKING THE DSP7000-TO-PC CONNECTION ................................................................................................. 98
8.4.1 GPIB Communication check.......................................................................................................................... 98
8.4.2 RS232 Communication Check ..................................................................................................................... 101
9. CALIBRATION ................................................................................................................................ 107
9.1 CLOSED-BOX CALIBRATION ............................................................................................................................... 107
9.2 CALIBRATION SCHEDULE .................................................................................................................................... 107
9.3 BASIC CALIBRATION PROCESS ........................................................................................................................... 107
9.3.1 Initial Calibration Procedure ........................................................................................................................ 107
9.3.2 Calibration of Analog to Digital Converters ................................................................................................ 108
9.3.3 Calibration of Digital to Analog Converters ................................................................................................ 109
9.3.4 Calibration Frequency .................................................................................................................................. 111
10. THEORY ........................................................................................................................................ 112
10.1 HOW THE PID LOOP WORKS ................................................................................................................................ 112
10.1.1 Scale Factors for Hysteresis, Eddy-Current and Powder Brake Dynamometers ......................................... 112
10.1.2 Speed Correction for WB (Eddy-Current Brake) Dynamometer ................................................................. 112
10.1.3 Equations ...................................................................................................................................................... 113
10.2 ADDITIONAL SCALE FACTOR ............................................................................................................................. 113
10.2.1 How To Set Additional Scale Factor ............................................................................................................ 113
10.3 FILTER PARAMETERS ........................................................................................................................................... 114
11. TROUBLESHOOTING ................................................................................................................... 115
APPENDIX A: INERTIA CORRECTION ............................................................................................. 116
A.1 INERTIAL EFFECT ON MOTOR TEST DATA ....................................................................................................... 116
A.2 PROCEDURE FOR INERTIA CORRECTION ........................................................................................................ 116
A.2.1 Key Conditions ............................................................................................................................................. 117
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