vi
20.11 Date and Time ......................................................................... 124
21. WARNING AND ERROR MESSAGES........................... 125
22. CHECKS AND ADJUSTMENTS..................................... 128
22.1 Circular Level .......................................................................... 128
22.2 Tilt Sensor ............................................................................... 129
22.3 Collimation ............................................................................... 132
22.4 Reticle ..................................................................................... 133
22.5 Optical Plummet ...................................................................... 135
22.6 Additive Distance Constant ..................................................... 136
22.7 Laser Plummet (Option) .......................................................... 138
23. POWER SUPPLY SYSTEM ........................................... 141
24. TARGET SYSTEM.......................................................... 142
25. OPTIONAL ACCESSORIES........................................... 144
26. SPECIFICATIONS .......................................................... 146
27. EXPLANATIONS ............................................................ 152
27.1 Manually Indexing the Vertical Circle by Face Left,
Face Right Measurement ........................................................ 152
28. REGULATIONS .............................................................. 153
29. INDEX ............................................................................. 157