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CORRECTION 1.PRISM CONST 0mm 2.SHEET CONST 0mm 3.TEMP : +15°C 4.PRESS : 0900hPa 5.ppm 0ppm MODE A 15 C S0 H. angle 92° 20"30' H. dst. V. dst. The valid range of Pressure input is from 600 to 1120 hPa. (420 - 840 mmHg) . When “Atmospheric Correction”in “Initial Setting 1”has been set to “1. AUTO” or “4. NIL”, “”is displayed to the left of the pressure value on the correction menu screen. When “”is on the screen, the pressure cannot be changed. If “Atmospheric Correction”in “Initial Setting 1”has been set to “3.ppm INPUT”, no pressure is displayed on the correction menu screen. . Once set, the pressure is displayed at the center of the top of the measurement screen. The factory initial of pressure is “1. AUTO”. Once set, the pressure remains in memory even after the power is turned off. Pressure correction is based on 1013 hectopascals (hPa). . If this instrument is used without correcting the pressure, a distance error per 100 m is about - 0.3 mm per -10 hPa as a pressure difference from 1013 hPa. (For more accurate values, see page 82.) 51 7 CORRECTION MODE Press the [ENT] key to accept the PRESS to 900 hPa. PENTAX R-300 (p20-52) 10/30/02 11:09 AM Page 52 7 CORRECTION MODE 7-4 Changing the ppm Value The ppm value can be changed only when “Atmospheric Correction” has been set to “ppm INPUT” in “Initial Setting 1”. “TEMP” and “PRESS” are not displayed. Example: Setting the ppm value to 31 ppm Press [F4] [CORR] in mode B. (If the instrument is in mode A, press [F5] [MODE] to enter mode B.) Press [F4] [h] to move the cursor to “3. ppm” and press the [F5] [SELECT] to enable the temperature to be changed. Press the [CLEAR] key. Input 31 by pressing numeric keys. 1.PRISM CONST 0mm 2.SHEET CONST 0mm 3.TEMP 0mm 4.PRESS 0mm 5.ppm : +12ppm SELECT 1.PRISM CONST 0mm 2.SHEET CONST 0mm 3.TEMP 0mm 4.PRESS 0mm 5.ppm : +000ppm CLEAR 1.PRISM CONST 0mm 2.SHEET CONST 0mm 3.TEMP 0mm 4.PRESS 0mm 5.ppm : +031ppm CLEAR Pressing the [ESC] key returns the instrument to mode A. MODE A 15 C S0 H. angle 92° 20"30' H. dst. V. dst. The valid range of ppm values is from -199 to +199. . Once set, the ppm value is displayed at the center of the top of the measurement screen. The factory initial of ppm value is “1. AUTO”. . Once set, the ppm value remains in memory even after the power is turned off. 52 PENTAX R-300 (p53-64) 10/30/02 11:13 AM Page 53 8-3 Press the [POWER] key while holding [F2] key down to access the screen for Initial setting 2. Entering the Mode for Initial Setting 2 1.ATM CORR : AUTO 2.PRISM CONST : 0mm 3.SHEET CONST : 0mm 4.CRV/REF CORR : 0.14 5.COMP AXIS : NIL 1.ATM CORR : AUTO 2.PRISM CONST : 0mm 3.SHEET CONST : 0mm 4.CRV/REF CORR : 0.14 5.COMP AXIS : NIL SET 2 1.MEAS MIN DISP : COARSE 2.SHOT COUNT : 1 TIME 3.SHOT INPUT : 01 TIMES 4.LD PLUM : ON 5.TILT DISP : ON Select the item of interest in the same way as in the mode for Initial setting 1. Pressing [F2] [ ] scrolls the screen down five items; pressing [F1] [ ] scrolls it up five items. 53 8 INITIAL SETTING 8 INITIAL SETTING 8-1 Overview For the R-300 series, you can select and save the desired setting for a variety of prescribed instrument conditions, called Initial Setting. The Initial Setting is saved in four modes, “Initial Setting 1”, “Initial Setting 2”, “Initial Setting 4”, and “Initial Setting 5”, in which you can select and save the instrument conditions described below. The factory default for each of these conditions is marked by . To change Initial Setting, follow the operating procedures for entering each Initial Setting mode on Page 53 and the operating procedures for changing an Initial Setting on Page 55. 8-2 Entering the Mode for Initial Setting 1 Press the [POWER] key while holding [F1] key down to access the screen for Initial Setting 1. Press [F3] [g] or [F4] [h] to position the cursor at the item of interest. PENTAX R-300 (p53-64) 10/30/02 11:13 AM Page 54 8 INITIAL SETTING 8-4 Entering the Mode for Initial Setting 4 Press the [POWER] key while holding [F4] key down to access the screen for Initial setting 4. Select the item of interest in the same w y as in the mode for Initial setting 1. 8-5 Entering the Mode for Initial Setting 5 Press the [POWER] k key down to access the screen f setting 5. Select the item of interest in the same w y as in the mode for Initial setting 1. Pressing [F2] [ ] scrolls the screen down five items; pressing [F1] [ ] scrolls SET 4 1.TEMP UNIT : °C 2.PRESS UNIT : hPa 3.DIST. UNIT :m 4.ANG. UNIT : DEG SET 5 1.BAUD RATE : 1200 2.DATA LENGTH : 8 3.PARITY BITS : NIL 4.STOP BITS : 1 5.SIGNAL CONTROL :ON it up five items. 54 PENTAX R-300 (p53-64) 10/30/02 11:13 AM Page 56 8 INITIAL SETTING 8-7 Initial Setting 1 1. Selection of Atmospheric Correction : [ATM CORR] Select whether Atmospheric Correction is to be performed by using the automatic measurement correction function with a atmospheric sensor, by entering the atmospheric temperature and pressure measured with a thermometer and barometer, by entering ppm value,...

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