Johnson 40-6936 User manual

©2015 Johnson Level & Tool - Rev. 1 1
Electronic Digital Theodolite
with Laser
Model No. 40-6936
Instruction
Manual
Congratulations on your choice of this Electronic Digital Theodolite with
laser. We suggest you read this instruction manual thoroughly before
using the instrument. Save this instruction manual for future use.
This is a Class IIIa laser
tool and is manufactured
to comply with CFR 21,
parts 1040.10 and
1040.11 as well as
international safety rule
IEC 285.
!
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2©2015 Johnson Level & Tool - Rev. 1
Table of Contents
1. Kit Contents
2. Features and Functions
3. Safety Instructions
4. Location/Content of
Warning Labels
5. Location of Parts/Components
6. Operating Instructions
7. Using the Product
8. Self-Check & Fine Calibration
9. Technical Specifications
10. Care and andling
11. Product Warranty
12. Warranty Registration
13. Accessories
14. Trouble Shooting
1. Kit Contents
Description for Model 40-6936 Qty.
Electronic Digital Theodolite with Laser 1
Alkaline Battery Compartment (batteries not included) 1
NiM Rechargeable Battery Pack 1
3-7.5V Battery Adapter 1
Rain ood 1
Adjustment Tools 1
Instruction Manual with Warranty Card 1
ard-Shell Carrying Case 1
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©2015 Johnson Level & Tool - Rev. 1 3
2. Features and Functions
• Electronic Thoedolite with dual-axis compensator and laser beam
integrated in the telescope. Beam is focussable.
• 5” angular accuracy - accurate enough for any construction job
• Vertical axis compensation - tilt sensor provides the highest level
of accuracy and can be turned on or off depending on job
requirements
• Dual LCD with large characters - easy to see angle readings
eliminate errors and reduces eye fatigue
• Backlit LCD screen and telescope reticle - allows work in low light
conditions including indoors and extended hours near dawn
and dusk
• Simple six button keypad - quick setups and simple operation with
low operator learning curve
• Large suite of programmable settings - provide multiple options for
various users and job requirements including zero position of
vertical angle
• Measurement units in degrees, gon, or mils
• 90 degree angle audible notification - for quick turning and set out
of right angles
• Instant conversion of vertical angles to percent of grade -
convenient for slope work
• Ni-M rechargeable battery pack and charger - lower operating cost
with reusable batteries
• Alkaline battery pack standard - provides backup and eliminates
downtime if the charge is lost in the middle of a job
• Battery status indicator - no power surprises and allows for better
planning
• Automatic shutoff - conserves battery life when not in use - can be
disabled if desired
• Laser Plummet
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4©2015 Johnson Level & Tool - Rev. 1
3. Safety Instructions
Please read and understand all of the following instructions, prior
to using this tool. Failure to do so, may void the warranty.
DANGER!
Class IIIa Laser Product
Max. Power Output: ≤5mW
Wavelength: 625-645nm
THIS TOOL EMITS LASER RADIATIO .
DO OT STARE I TO BEAM.
AVOID DIRECT EYE EXPOSURE.
ATTENTION IMPORTANT
• Read all instructions prior to operating this laser tool. Do not remove any labels from tool.
• Do not stare directly at the laser beam.
• Do not project the laser beam directly into the eyes of others.
• Do not set up laser tool at eye level or operate the tool near a reflective surface as
the laser beam could be projected into your eyes or into the eyes of others.
• Do not place the laser tool in a manner that may cause someone to unintentionally
look into the laser beam. Serious eye injury may result.
• Do not operate the tool in explosive environments, i.e. in the presence of gases or
flammable liquids.
• Keep the laser tool out of the reach of children and other untrained persons.
• Do not attempt to view the laser beam through optical tools such as telescopes as
serious eye injury may result.
• Always turn the laser tool off when not in use or left unattended for a period of time.
• Remove the batteries when storing the tool for an extended time (more than 3 months)
to avoid damage to the tool should the batteries deteriorate.
• Do not attempt to repair or disassemble the laser tool. If unqualified persons attempt
to repair this tool, warranty will be void.
• Use only original Johnson®parts and accessories purchased from your Johnson®
authorized dealer. Use of non-Johnson®parts and accessories will void warranty.
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©2015 Johnson Level & Tool - Rev. 1 5
4. Location/Content of Warning Labels
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6©2015 Johnson Level & Tool - Rev. 1
5. Location of Part/Components
andle
Targeting Sight
Objective Lens
orizontal Fine
Motion
orizontal Clamp
LCD Display
Operating Keys
Tripod Base
Plate
andle Screw
Center Mark &
Vertical Plate
Tubular Vial
Circular Vial
Battery Case
Eyepiece
Telescope Fine Motion
Telescope Clamp
Tribrach Locking
Lever
Focusing Ring
Laser Plummet
On/off Knob
Communication Port
Leveling Screw
Laser On/Off Knob
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©2015 Johnson Level & Tool - Rev. 1 7
6. Operating Instructions
Display and Display Explanation
1. t - Total value of repeated angles measured
2. V - Vertical angle
3. Number of repeated measurements
4. AVG - Value of repeated angle measurements
5. R - Angle increases with clockwise turning
6. L - Angle increases with counterclockwise turning
7. TILT - Tilt sensor
8. F - Function mode
9. G - Angle unit GON
10. % - Vertical slope in percent
11. REP - Repeated angle measurement mode
12. Battery power indication
1
2
3
4
5 6
7
89
101112
IMPORTA T: It is the responsibility of the user to verify the
calibration of the instrument before each use.
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8©2015 Johnson Level & Tool - Rev. 1
Change the number indicated by the cursor
Power key
Zero the horizontal angle reading
Change vertical angle to percent of grade
Repeated angle measurement
Function key selection
old horizontal angle reading
Set horizontal-angle rotation direction
Illuminating the display
Moving the cursor to the left
Moving the cursor to the right
Operating Panel and Operating Keys
ote: If the display shows “b” after activating the tilt sensor, the
instrument exceeds its compensation range and the instrument
should be leveled.
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©2015 Johnson Level & Tool - Rev. 1 9
Preparation Before Measurement
Centering and Leveling with Laser Plummet
• Level and center the instrument precisely to ensure its best
performance.
• Extend the tripod legs to a suitable working height with equal length
legs. Spread the tripod legs and make the tripod head as level as
possible while at the same time placing the center of the tripod head
directly over the ground point. Press the leg feet firmly into the
ground and make sure the tripod legs are locked.
• Set the instrument carefully on the center of the tripod head
orientating the leveling screws centered with each tripod leg. Attach
the instrument to the tripod. Make sure the center mark is visible on
all three leveling screws (this ensures a complete leveling range).
• With the instrument turned on, turn on the laser plummet by turning
the laser plummet on/off knob clockwise. Adjust the Laser Plummet
so the laser dot hits the ground clearly. If you cannot see the laser
dot hit the ground, carefully lift two of the tripod legs, then pivot on
the third leg, carefully moving the tripod until the ground point is
within one inch of the laser dot. Press the two tripod feet back into the
ground and recheck the laser plummet alignment. Repeat if
necessary until the ground point is being hit by the laser dot.
• Now center the instrument’s Circular Vial by carefully extending or
shortening the tripod leg closest to the bubble. Note: Use only two
legs. Repeat until alignment is within 6mm (1/4 inch) or less.
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• Rotate the leveling screw 1, 2 to move the bubble to the center line
of circular level which is perpendicular to the connection line 1, 2.
• Rotate the leveling screw 3 to move the bubble to the center of the
circular level.
• Next use the Tubular Vial to accurately level the instrument. Unlock
and turn the instrument so that the tubular vial is parallel to BC, any
two leveling screws. Note the direction to turn the leveling screws in
the graphic. When turning the two screws, adjust them equally. The
bubble will move in the direction that your left thumb turns. To move
the bubble to the right, turn the B leveling screw in and
simultaneously turn the C leveling screw in. To move the bubble left,
move both screws out simultaneously. Once centered turn the
instrument 90º over A leveling screw and turn screw A in or out until
bubble is centered. Go back to the first position BC, and repeat until
the bubble is centered in both positions. Then from position BC turn
180º to check the adjustment. If the bubble stays centered or within
1/4 division, you are level.
10 ©2011 Johnson Level & Tool
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