User manual PENTAX DCF WP 8X42

[. . . ] makes no warranty, expressed or implied, including but not limited to any implied warranties or merchantability or fitness for a particular purpose, regarding these materials and makes such materials available. 3 PREC AUTIONS REGARDING SAFET Y Safet y precautions (Must b e followed) The following items are intended to prevent possible injury to the user or other people and/or damage to the instrument before it occurs. These safety precautions are important to the safe operation of this product and should be observed at all times. Distinc tive displays The following displays are used to distinguish precautions by the degree of injury or damage that may result if the precaution is ignored. WARNING Items indicated by this sign are precautions which, if ignored, would result in serious injury. CAUTION Items indicated by this sign are precautions which if ignored may result in injury or material damage. · Here "injury" refers to injuries such as cuts, burns or electric shock the treatment of which will not likely require hospitalization or long-term attention. · "Material damage" refers to damage to facilities, buildings, acquired data, etc. [. . . ] Otherwise it may cause malfunction or damage to the display. 22 2. 4 Alphanumeric input The point name is inputted by the Alphanumeric keys as following. Key [0] [1] [2] [3] [4] [5] [6] [7] [8] [9] [. ] [+/-] Letter under Key Letter & Figure order to input [@][. ][_][-][:][/][0] [P][Q][R][S][p][q][r][s][1] [T][U][V][t][u][v][2] [W][X][Y][Z][w][x][y][z][3] [G][H][I][g][h][i][4] [J][K][L][j][k][l][5] [M][N][O][m][n][o][6] [ ][?][!][_][ ][^][I][&][7] [A][B][C][a][b][c][8] [D][E][F][d][e][f ][9] [. ][, ][:][;][#][(][)] [+][-][*][/][%][=][<][>] PQRS TUV WXYZ GHI JKL MNO ABC DEF 2. 5 LD POINT, Laser pointer 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 Laser indicator is turned on and the Laser pointer function is operating. mark on the left of the screen blinks while the · The beam of the sun is strong and visual confirmation is difficult in daytime when outdoors. · The laser beam is designed not to be able to observe through the telescope. · Please visually align the laser beam to the target and mark the center. Confirm the alignment (horizontal and vertical) before measuring when performing accurate work like stake out when using the Laser pointer function. · Please do not look at the laser source of beam directly. 23 3. PREPARATION FOR SURVEYING 3. 1 Centering and leveling of the instrument [S etting up the instrument and the trip od] Adjust the tripod legs so that a height suitable for observation is obtained when the instrument is set on the tripod. Hang the plumb bob on the hook of the tripod, and coarse center over the station on the ground. At this time, set the tripod and fix the metal shoes firmly into the ground so that the tripod head is as level as possible, and the plumb bob coincides with the station on the ground. If the tripod head is mis-leveled by the action of fixing the metal shoes into the ground, correct the level by extending or retracting each leg of the tripod. Continuous mode: Pressing AF buttons for two seconds beeps, and releasing the key enters into the Continuous mode. This mode enables you to perform the Auto focus approx. for one minutes only by sighting through the telescope and following the target. Normal mode Continuous mode Press the AF button. Press AF buttons for two seconds until it beeps and release the key. [Auto fo cus: Target sighting by Normal mo de] Loosen the telescope clamp and horizontal clamp screws. Point the telescope at the target using a collimator. Look through the telescope and press the AF button. Move your eye vertically and horizontally to see if the target image moves in relation to reticle. Align the reticle accurately on the target using telescope and horizontal tangent screws. Collimator Target Collimator AF button Target sighting · If the target image does not move, there is no parallax. · Even when vertical angle measurement is not performed, it is recommended that the target should be placed at the reticle center. · Operating the Power focus key rotates the Focus ring, so do not touch it while it is rotating. 29 [Auto fo cus :Target sighting by Continuous mo de] Loosen the telescope clamp and horizontal clamp screws. Point the telescope at the target using a collimator. [. . . ] - The measurement range, accuracy of distance measurement and time required to measure may be influenced by the shape, size of surface area and reflection rate of the target and its environment. 41 6. APPENDIX 6. 1 Atmospheric correction The speed at which light travels through the air varies depending on the temperature and atmospheric pressure. The DCF WP 8X42 series is designed to measure distances at the speed of light in order to measure accurately, atmospheric correction needs to be used. The instrument is designed to correct for weather conditions automatically if the temperature and pressure are input. Correction is then carried out based on the following formula. K: Atmospheric Correction Constant P: Atmospheric pressure (hPa) t: Temperature(°C) Distance after Atmospheric Correction D = Ds (1+K) Ds: Measured distance when no Atmospheric Correction is used. 6. 2 hPa and mmHg conversion table [Conver ting from hPa to mmHg] [Conver ting from mmHg to hPa] 42 6. 3 Error when no atmospheric correction is made When measurement is carried out with no Atmospheric Correction (with the settings fixed at a temperature of 15°C and an atmospheric pressure of 1013 hPa or 760 mmHg), the Error per 100 meters in temperature and pressure will be shown in the tables below. [. . . ]