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FINE SELECT Press the numeric keys [0] [0] [7] in mode A or B. The screen will then change to the command input screen. Press the numeric keys for the desired command number in the Command No. Table. (For example, press [5] [0] [1] for MEAS. MIN DISP.) Press the [ENT] key to access the MEAS. MIN DISP. 63 PENTAX R-300 (p65-88) 10/30/02 11:11 AM Page 65 10 CHECKS AND ADJUSTMENTS 10 CHECKS AND ADJUSTMENTS . Checks and Adjustments should be performed before and during measurement. . The instrument should be checked after long storage and transportation. . The checks should be performed in the following order. [Cautions on CHECKS AND ADJUSTMENTS] . When adjustment is completed, be sure that adjusting screws are completely tightened. When finishing turning adjusting screws, be sure that screws are turned in a direction for tightening. . Repeat check after adjustment, and check if the instrument has been adjusted properly. . When adjustment is completed, be sure that adjusting screws are completely tightened. When finishing turning adjusting screws, be sure that screws are turned in a direction for tightening. . Repeat check after adjustment, and check if the instrument has been adjusted properly. 10-1 Electronic vial Checks q Align the Electronic vial in parallel with a line (A) Leveling screws Leveling screws joining any two of the leveling screws. Then, adjust the two screws to center the bubble in the Electronic vial. w Turn two leveling screws in an opposite direction mutually and have the bubble of the side of the electronic vial to the center. e Make the bubble of the length of the electronic vial to the center by operating the leveling screw of one remainder. (B) r Rotate the instrument by 180° and confirm the position of the bubble of the electronic vial. At this time, it is not necessary to adjust it if the bubble of the electronic vial is in the vicinity of the center. 65 PENTAX R-300 (p65-88) 10/30/02 11:11 AM Page 66 10 CHECKS AND ADJUSTMENTS . Please check the electronic vial in a steady environment that has no vibration or rapid temperature change. . When the electronic vial is checked outdoors and on a tripod, avoid sunlight influence by using a sunshade. Please wait for a while until the instrument and tripod are at the same temperature as the surrounding air. . When the instrument is seen at the position of “Left circle”, movement and the inclination of the instrument become the same on the screen in the electronic vial. Please note that the movement of the bubble becomes opposite direction if it is seen at the position of “Right circle”. Adjustments It is necessary to adjust as following when the bubble is not in the vicinity of the center in the confirmation of r. Procedure to adjust the electronic vial: Press the [POWER] and [LASER] key simultaneously. Following screen is viewed. SELECTSELECTSELECTSELECT Electronic vial adj. Avoid direct sunlight and viration during adjustment Aim at a target accurately, then press [F3] 0 SET Aim at a target and press [F3] key. Following screen is viewed. Turn the instrument 180° and reverse the telescope. Aim at the same target accurately, then press [F3]. Following screen is viewed. Pressing the [ENT] key completes the adjustment. 66 SELECTSELECTSELECTSELECT Electronic vial adj. Turn the instrument 180° and reverse the telescope. Aim at the same target accurately, then press [F3] 0 SET SELECTF3SELECTSELECT Electronic vial adj. Successfully accomplished. Press [ENT]. PENTAX R-300 (p65-88) 10/30/02 11:11 AM Page 67 10 CHECKS AND ADJUSTMENTS 10-2 Circular Vial Checks q Adjust by the electronic vial beforehand. w Confirm the position of the bubble of the Circular vial. At this time, it is not necessary to adjust if the bubble is at the center of the circle. Adjustments When the bubble of the Circular vial comes off from the center according to check procedure w, it is necessary to adjust. Turn the bubble adjustment screw with a hex wrench (L type wrench) and put the bubble in the center of the circle. [Only the detaching type model] Turn the bubble adjustment screws with the reticle adjustment pin and put the bubble in the center of the circle. Circular vial Circular vial adj. screw Circular vial adj. screw Tighten the screws equally after the above adjustment. 67 PENTAX R-300 (p65-88) 10/30/02 11:11 AM Page 68 10 CHECKS AND ADJUSTMENTS 10-3 Vertical Reticle Checks q Set the instrument up the tripod and carefully level it. w Sight the target Point A with telescope. e Using the telescope fine adjustment screws, move Point A to the edge of the field of view by screw (point A’). r No adjustment is necessary if Point A moves along the vertical line of the reticle. Vertical line Line of sight axis Adjustments q If Point A is off from the vertical line of the reticle, first remove the eyepiece cover. w Using the adjusting pin, loosen the four reticle adjustment screws slightly loosening each screw by the same amount, and then rotate the reticle line around the sight ...

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