User manual PENTAX W-800

[. . . ] TOTAL STATION W-800 BASIC INSTRUCTION MANUAL SERIES PENTAX Industrial Instruments Co. , Ltd. 2-36-9, Maeno-cho Itabashi-ku, Tokyo 174-0063 Japan Tel. +81 3 3960 0502 Fax +81 3 3960 0509 E-mail: international@piic. pentax. co. jp Website: www. pentax. co. jp/piic/survey www. pentaxsurveying. com Before using this product, be sure that you have thoroughly read and understood this instruction manual to ensure proper operation. After reading this manual, be sure to keep in a convenient place for easy reference. This Basic Instruction Manual contains the basic operation procedures and precautions on W-800 series hardware. W-800 series is an open platform product and you can enjoy variety of application software on it. Regarding the operations of application software, please refer to their respective manuals. Copyright © 2007 PENTAX Industrial Instruments Co. , Ltd. [. . . ] Setting up and turn on. 24 3. 2 Laser plummet Turn on the laser plummet function. How to activate/terminate the laser beam emission differs depending on application software. For exact method of activating/terminating laser beam emission, refer to the instructions in the manuals of respective software. The brightness adjustment step of the laser is 10 steps. Match the position by the tripod so that the laser mark coincides with the ground mark. Rotate the instrument by 90°, and confirm the vial of the the electronic vial is at the center at any position. Correct the bubble with the leveling screw when the bubble comes off from the center. · The laser plummet spot can become difficult to see in bright sunlight which makes it difficult to perform the occasional check. In this case, use your foot or the carrying case to make a shadow over the laser position. · The laser plummet is adjusted to be within +- 0. 8 mm at the instrument height of 1. 5m at factory shipping. · Please do not look at the laser source of beam directly. 25 3. 3 Leveling Tripod is adjusted according to the following points by extending or contracting the legs so that the bubble of the Circular vial goes to the center of the circle. · Shorten the leg at the side of the bubble or extend the leg opposite of the bubble to position the bubble in the center of the vial circle. · All three legs are extended or contracted until the bubble is in the center. During this process, the foot is not placed on the tripod leg point and the position of the tripod points do not change. Rotate instrument horizontally and make two Leveling screws arbitrarily chosen parallel to the display. Put the bubble of the Circular vial in the center of the circle when the display shows "TILT OVER" . Turn two Leveling screws arbitrarily chosen in an opposite direction mutually and put the vial of the horizontal Electronic vial in the center. (Figure A) Put the bubble of the lengthwise Electronic vial in the center by operating the Leveling screw of one remainder. (Figure B) The procedures are different according to the state of the Automatic inclination correction as following. [When using the Automatic inclination correc tion by 2 axis] Please read procedure because the horizontal angle and the perpendicular angle error by a perpendicular axis are automatically corrected. [When using the Automatic inclination correc tion by 1 axis] The instrument is horizontally rotated by 180° after the bubble of the Electronic vial is adjusted on the center at a Left circle position side and confirm that the bubble of the vial is at the center at the right circle position. [When using without Automatic inclination correc tion] Confirm the bubble is at the center even if the instrument is rotated by each 90°. Confirm whether the plummet is on the ground mark. When you confirm it is not on the mark, loosen the center screw and move the instrument over the ground mark correctly and fix the instrument by a center screw. Repeat from to 26 3. 4 Eyepiece adjustment The eyepiece adjustment is performed before target sighting. Point the telescope at a bright object, and rotate the eyepiece ring full counter-clockwise. Look through the eyepiece, and rotate the eyepiece ring clockwise until the reticle appears as its maximum sharpness. · When looking into the eyepiece, avoid an intense look to prevent parallax and eye fatigue. 27 3. 5 Target sighting [Auto fo cus] The Auto focus mechanism is very precise but will not function under every condition. There is a slight possibility of focusing failure owing to brightness, contrast, the shape and size of the target. In such a case, press the AF button and focus on the target by operating the Power focus key or the Focus ring. <Target examples which are hard to fo cus> No contrast like a white wall Bright back light Obstacle in front of a target A wall composed of single horizontal lines 28 [Target sighting by Auto fo cus] The Auto focus of W-800 series has following two modes. Normal mode: Pressing AF button focuses on the target. [. . . ] · When the actual pressure is 1013 hPa (760 mmHg) and the temperature is 25°C, conducting the measurement with the temperature left at 15°C will result in the measurement being short by 0. 9 mm per 100 meters. [Error table: When hPa (15°C, 1013hPa as standard)] [Error table: With mmHg (15 °C, 760mmHg as standard)] 43 6. 4 Atmospheric refraction and earth curvature correction · Atmospheric refraction and earth curvature correction refers to correcting both the bending of the light beam caused by atmospheric refraction and the effect on the height differential and horizontal distance caused by the earth curvature. · Correction called "atmospheric refraction and earth curvature correction" is initiated to correct error when the slope distance and vertical angle are caused to determine the horizontal distance and the height differential, with this instrument, the following formula is used to correct these factors. · Calculation formula when atmospheric refraction and earth curvature correction parameter is set to "ON": Corrected horizontal distance (H) Corrected vertical distance (V) · Calculation formula when atmospheric refraction and earth curvature correction parameter is set to "OFF": S: : K: Re: Slope distance Vertical angle from horizontal Atmospheric refraction coefficient (0. 14 or 0. 2) Diameter of earth 6378137m 44 6. 5 Distance range Generally speaking, the maximum range which can be measured varies considerably depending on the atmospheric conditions. For this reason, the Specifications illustrate the values for both Good and Normal weather conditions. [. . . ]