Grating Mechanism Calibration

Date: __________7/27/01________________

Grating #___4_____________(“C”)_______

Fiducial was set to zero while driving in the positive direction at 500 counts / sec.

	Motor Encoder	Gurley
Primary Forward Limit	91,132	8,790
Primary Reverse Limit	-814,198	-79,112
Secondary Forward Limit	110,862	10,736
Secondary Reverse Limit	-829,184	-80,468
Gurley Index Position	-168,226	-16,341

Notes:

1. Because of the reverse wiring of the motor, the command CEC=8 must be included in the software.

2. Translation position: +3,228,000