CONTENTS
I. INTRODUCTION 7
II. FIRST STEPS WITH DELTA 9
1. Descriptive diagrams 10
2. Instructions for use 11
a. Turn on the product 12
b. Turn off the product 12
c. Using the touch screen and keypads 12
d. Work screens 15
III. CARRY OUT AN OPTICAL TRACING 19
1. The tracing environment 20
a. Legend screen 20
b. Jobs and working modes 22
2. Shape management and storage 23
a. Legend screen 24
b. Job list 26
c. Creating a job 26
d. Working in current job mode (job A) 27
3. Optical tracing 28
4. Enter the curve and frame base 31
5. Case of a mechanical tracing 33
a. Connection with a Tess tracer 33
b. Connection with a PHI tracer 36
IV. CENTER AND BLOCK A LENS 37
1. Centering environment 38
a. Description of the centering blocking system 38
b. Legend screen 42
c. Calling up a shape 45
2. Centering a single vision lens 46
3. Centering a progressive lens 49
a. Centering a progressive lens using re-marked micro-engravings 49
b. Centering a lens using manufacturer markings 51
4. Centering bifocal/trifocal lenses 53
5. Centering an executive lens 55
6. Centering a mid-distance lens 57
a. Centering a lens using re-marked micro-engravings 58
b. Centering a lens using manufacturer markings 60
7. Blocking a lens 62
a. Prepare blocking 62
b. Blocking 64
8. Blocking control and compensation 67
V. MODIFYING THE LENS SHAPE 71
1. Legend screen 72
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