Error Display; Base Installation - Johnson Theodolites 40-6936 Manual De Instrucciones

8863H-All_Manuals 3/19/15 3:25 PM Page 24

Error Display

b
Difference between every measuring value exceeds 30" during the repeated angle measurement.
Err-04
Measuring times of repeated angle measurement is more than 15. Press "0-SET" to measure again.
Errors during the process of the vertical angle 0-set or adjusting 0-set when the inclination
Err-06
Note: If above errors appear, act according to corresponding actions
mentioned above. If errors still exist, then the instrument needs repair.
Installation and Removal of the Base
Base Removal
• Rotate the Tribrach locking lever 180° counterclockwise.
• Hold the base plate with one hand, and with the other hand lift up
the instrument by the handle.

Base Installation

• Lift the instrument by hand, and aim the positioning block to the
notch on the base plate. Mount the instrument on the base plate
carefully.
• Tighten the clamp knob on
the base plate.
24
Instrument exceeds its self-leveling range, level the instrument again.
Press "0-SET" key and measure again.
to the horizontal angle exceeds 45º the instrument needs adjusting.
Tribrach Locking Level
Positioning block
Notch
©2015 Johnson Level & Tool - Rev. 1