User manual PENTAX ETH-320

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Manual abstract: user guide PENTAX ETH-320

Detailed instructions for use are in the User's Guide.

[. . . ] ETH-300 INSTRUCTION MANUAL ETH-302 ETH-305 ETH-310 ETH-320 2 sec. Angle Accuracy Detachable Tribrach 5 sec. Angle Accuracy Detachable Tribrach 10 sec. Angle Accuracy Detachable Tribrach 20 sec. [. . . ] The illumination is automatically turned off after five minutes. 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. This function can be set to NIL by special key operation. (Refer to 3. 5 Setting of automatic power off function. ) 21 3. 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°. If the bubble moves, repeat procedure 1 and 2 . 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. [. . . ] 4 Sight point P again in the reverse position and read the vertical angle (V reverse). 5 At this time, when (V correct + V reverse - 360°)/2 is less than 15" , it is within tolerance. If it shows a larger value, it needs adjustment - Consult your dealer. 42 6. 7 Optical plummet Inspection 1 Place a piece of white paper, with a cross drawn on it, directly under the instrument. 2 Look through the optical plummet, and move the paper so that the intersecting point of the cross comes to the center of the field of view. [. . . ]

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