Congratulations on your choice of this David White® Electronic Digital Transit. We
suggest that you read this instruction manual carefully before using the instrument. By
thoroughly familiarizing yourself with the instrument and its operation, you will be able
to obtain the full benefit of this superior precision instrument. Save this instruction
manual for future use.
CONTENTS
BEFORE YOU USE .................................................................................................... 1
WARRANTY INFORMATION .................................................................................... 2
1. NOMENCLATURE and FUNCTIONS. ..................................................................... 3
1.1 Nomenclature ......................................................................................................... 3
1.2 Part functions ......................................................................................................... 4
1) Display ................................................................................................................... 4
2) Operating keys ..................................................................................................... 5
3) Setting up your measuring Preferences ...................................................... 6
2. PREPARATIONS for MEASUREMENT .................................................................. 8
2.1 Mounting and leveling .......................................................................................... 8
2.2 Telescope eyepiece focus ..................................................................................... 9
2.3 Aiming at the target ............................................................................................ 10
3. MEASUREMENT ................................................................................................ 10
3.1 Power ..................................................................................................................... 10
3.2 Measuring horizontal angles ............................................................................. 11
3.3 Presetting horizontal angles ............................................................................. 11
3.4 Measuring vertical angles ................................................................................... 11
3.5 Measuring percent of grade .............................................................................. 11
3.6 Stadia measurement ........................................................................................... 12
3.7 Displayed Error Codes ......................................................................................... 12
4. HANDLING of POWER SUPPLY .......................................................................... 13
4.1 Removing battery compartment ...................................................................... 13
4.2 Replacing batteries .............................................................................................. 13
4.3 Mounting battery compartment ...................................................................... 13
5. CHECKS and ADJUSTMENTS ............................................................................. 14
5.1 Adjustment precautions ..................................................................................... 14
5.2 Checking and adjusting ...................................................................................... 14
1) The plate vial ...................................................................................................... 14
2) The circular vial .................................................................................................. 14
3) The optical plummet ........................................................................................ 15
5.3 Setting the Vertical Zero Position ..................................................................... 15
6. TRIBRACH .......................................................................................................... 16
7. ACCESSORIES .................................................................................................... 16
8. HANDLING PRECAUTIONS ................................................................................. 16
9. SPECIFICATIONS ............................................................................................... 17
© David White 2002. All Rights Reserved
August 2002
Information contained in this publication is subject to change without notice.
