User manual PENTAX ETH-305

[. . . ] Angle Accuracy Detachable Tribrach ELECTRONIC THEODOLITES SERIES PENTAX Industrial Instruments Co. , Ltd. 2-5-2 Higashi-Oizumi Nerima-Ku, Tokyo 178-8555, Japan Tel. +81 3 5905 1222 Fax +81 3 5905 1225 E-mail: international@piic. pentax. co. jp Website: www. pentax. co. jp/piic/survey www. pentaxsurveying. com Ahead of Vision Safety Precautions (must be 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. ·Distinctive Displays The following displays are used to distinguish precautions by the degree of injury of damage that may result if the precaution is ignored. WARNING Items indicated by this display are precautions which if ignored could result in death or serious injury. [. . . ] To prevent operation error, the buzzer sounds for three seconds when the [OSET] key is pressed. [OSET] is not initiated unless the key is pressed during the buzzer sound. 19 2. 3. 5 [R/L] key Press the [R/L] key to change from clockwise to counterclockwise rotation. A clockwise or counterclockwise reading is alternately displayed each time the key is pressed. Count horizontal angle in a right rotation direction (HR) 2 Counterclockwise horizontal angle Count horizontal angle in a left rotation direction (HL) If the power turns off during the counterclockwise mode, the display returns to a clockwise horizontal angle display when power is turned on. 1 Clockwise horizontal angle 2. 3. 6 [Illumination key ] Pressing the key, illuminates the LCD panel and telescope reticule. Pressing the key, with illumination on, turns off the illumination. 20 2. 4 Other Functions 2. 4. 1 Remaining battery indicator The status of the remaining battery capacity is displayed with " " symbolizing the battery capacity. Battery full - operating possible Operation possible Operation still possible Get the battery ready for a stand by Replace batteries Automatic Power-off function If there is no key operation for about 30 minutes, the power supply is turned off automatically. A Set the tripod and fix the metal shoe firmly into the ground so that the tripod head is as level as possible and centered above the station point. If the tripod head is disturbed by the action of fixing the metal shoe into the ground, correct the level by extending or retracting each leg of the tripod. Set the instrument on the tripod head; insert the tripod center screw into the instrument bottom plate and tighten firmly. Tripod head Center screw Tripod Bottom plate 28 4. 2 Leveling with the Circular level After [4. 1 Setting up the instrument] is completed, instrument must be leveled using the circular vial. 1 By rotating any two leveling screws, position the bubble in the center of the vial (See A. ) (To adjust the screws at the same time, turn them in opposite directions. ) 2 Adjust the remaining leveling screw, and position the bubble in the center of the circle (See B) For the relation between the screw adjusting direction and bubble moving direction, refer to the arrows of the following figures. Bubble will move to the right in figure A, while in figure B it moves upward. (A) (B) 29 4. 3 Leveling with the Plate level After [4. 2 Leveling with the circular vial] is completed, instrument must be leveled with plate vial. 1 Place the plate vial in parallel with a line joining any two of the leveling screws. By rotating two leveling screws in the opposite direction of each other, position the bubble in the center of the vial (See A) 2 Rotate the plate vial through 90°, position the bubble in the center of the vial by operating the remaining one leveling screw (See B) 3 Confirm if the bubble stays in the center by rotating the instrument 180°. For the relationship between the screw adjusting direction and bubble moving direction, refer to the arrows of following figures. Bubble will move to the left in figure A, while in figure B moves upward. When the bubble is not positioned in the center by repeating procedure 1 and 2 in procedure 4. 2 , adjustment is required. (Refer to [6. Inspection and Adjustment. ]) Plate vial (A) (B) 30 4. 4 Centering with the optical plummet After [4. 3 Leveling with the plate vials] is completed, the instrument must be centered above the station point. 1 2 3 4 Focus the optical plummet reticule by rotating the optical plummet eyepiece knob. Focus the station point by rotating the optical plummet focusing knob. Look through the optical plummet eyepiece, and move the instrument bottom plate until the reticule center coincides with the station point. (Take care not to rotate the instrument) Tighten the tripod center screw. Ascertain that the bubble stays positioned in the center when rotating the plate vial position in steps of 90°. If the bubble is not positioned in the center, adjust with the leveling screws. [. . . ] 3 Loosen the horizontal clamp screw, and rotate the instrument around the vertical axis. 4 Loosen the telescope clamp screw, and reverse the telescope around the horizontal axis. Mark a point on the line of sight at about the same distance as point B, and call it point C. 5 No adjustment is necessary if point B and C coincide, but if it does not - Consult with your dealer. 41 6. 6 Difference of the vertical angle Inspection 1 Set the vertical angle in Zenith 0° mode 2 Sight an object (Point P) with the telescope and read the vertical angle (V correct). [. . . ]