Évaluations - 5, GPA: 4.4 ( )

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35 PENTAX R-300 (p20-52) 10/30/02 11:08 AM Page 36 5 ANGLE MEASUREMENT 5 ANGLE MEASUREMENT 5-1 Measuring an Angle Aim at the first target, then press [F3] [0 SET] twice in succession to reset the horizontal angle to 0. Aim at the second target, then read the horizontal angle. Pressing [F4] [DISP] displays the vertical angle. H. angle 00"00'0° H. dst. V. dst. H. angle 20"30'60° H. dst. V. dst. MODE A 15 C S0 H. angle 60° 20"30' V. angle 87° 40"05' S. dst. MEAS TARGET 0 SET DISP MODE . The [0 SET] key cannot reset the vertical angle to 0. . Pressing the [DISP] key cycles through the sets of display items: “H.angle/H.dst./V. dst.”, “H angle/V.angle/S.dst.”, and “H.angle/V. angle/H.dst./S.dst./V.dst.”. . Even though you turn the power off during a survey, the horizontal angle displayed last time is saved, so that it is restored when the power is turned on next time. . When the restored horizontal angle is not necessary, reset it to 0. 36 PENTAX R-300 (p20-52) 10/30/02 11:08 AM Page 37 5 ANGLE MEASUREMENT 5-2 Resetting the Horizontal Angle to 0 Pressing [F3] [0 SET] twice in succession resets the horizontal angle to 0° 0' 0". The [F3] [0 SET] cannot reset the vertical angle to 0. horizontal angle to 0 unless you press it again. sounding, you can go to the next step. . You can reset the horizontal angle to 0 any time e held. 5-3 Holding the Horizontal Angle To hold the horizontal angle currently being displayed, press [F3] [HOLD] twice in succession. The horizontal angle value is displayed in reverse video when being held. Pressing the [F3] [0 SET] accidentally during measurement does not reset the H. angle 00"00'0° H. dst. V. dst. MODE B 15 C S0 H. angle 130° 20"45' H. dst. V. dst. . lf you want to hold the horizontal angle when you are in mode A, press [F5] [MODE] first to switch to mode B, then press [F3] [HOLD]. The [F3] [HOLD] cannot hold the vertical angle or distance. To release the horizontal angle from being held, press [F3] [HOLD] once. . Pressing [F3] [HOLD] accidentally during measurement does not hold the horizontal angle unless you press it again. Once the buzzer stops sounding you can go to the next step. 37 PENTAX R-300 (p20-52) 10/30/02 11:08 AM Page 38 5 ANGLE MEASUREMENT 5-4 Inputting an Arbitrary Horizontal Angle In case of Horizontal angle 123° 45' 20" input Press [F5] [MODE] to enter mode B. Press [F2] [ANG SET] to display the angle setting screen, then press [F4] [h] to move the cursor to “2. H. ANGLE INPUT”. Press [F5] [SELECT] to open the horizontal angle input window. [F5] [CLEAR] is used to clear the values. H. angle 20"30'92° H. dst. V. dst. 1.ANGLE / %GRADE : ANGLE 2.H. ANGLE INPUT : 092° 30' 20" 3.R/L REVERSE : RIGHT ANGLE SET 1.ANGLE / %GRADE : ANGLE 2.H. ANGLE INPUT : 092° 30' 20" 3.R/L REVERSE : RIGHT SELECT 1.ANGLE / %GRADE : ANGLE 2.H. ANGLE INPUT : 092° 30' 20" 3.R/L REVERSE : RIGHT 092° 30' 20" ANGLE SET CLEAR 1.ANGLE / %GRADE : ANGLE 2.H. ANGLE INPUT : 000° 00' 00" 3.R/L REVERSE : RIGHT 00° 00' 00" ANGLE SET P-30 CLEAR 38 PENTAX R-300 (p20-52) 10/30/02 11:08 AM Page 39 5 ANGLE MEASUREMENT Press the numeric key as 123.4520. 1.ANGLE / %GRADE : ANGLE 2.H. ANGLE INPUT : 123° 45' 20" 3.R/L REVERSE : RIGHT 123° 45' 20" ANGLE SET CLEAR Press the [ENT] key to accept the horizontal angle set to 123° 45' 20" and change the screen to mode A. MODE A 15 C S0 H. angle 123° 20"45' H. dst. V. dst. The former data is called by pressing the [CLEAR] key again. 39 PENTAX R-300 (p20-52) 10/30/02 11:08 AM Page 40 5 ANGLE MEASUREMENT 5-5 Displaying the % Slope of the Vertical Angle Press [F5] [MODE] to enter mode B. Press [F2] [ANG SET] to display the Angle setting screen. Press the [F5] [SELECT] to change the screen to display the slope % of Vertical angle. H. angle 20"30'92° H. dst. V. dst. 1.ANGLE / %GRADE : ANGLE 2.H. ANGLE INPUT : 092° 30' 20" 3.R/L REVERSE : RIGHT SELECT MODE A 15 C S0 H. angle 92° 20"30' H. dst. V. dst. MEAS TARGET 0 SET DISP MODE Press [F4] [DISP] to display the slope value in %. MODE A 15 C S0 H. angle 92° 20"30' %. grade -1.84% S. dst. . The 0% represents the horizontal 0, and +100% and -100% represent 45° up and down slopes respectively. . To return the screen from the slope (%) display to the 360° scale, also take above same steps by entering mode B. . If the slope (%) exceeds [+/-]1000%, “Out of grade range” is displayed, indicating that the current vertical angle cannot be measured. . When the telescope returns to a slope within slope [+/-] 1000%, the slope (%) display returns automatically from the “Out of grade range” message to the numeric value. 40 PENTAX R-300 (p20-52) 10/30/02 11:08 AM Page 41 5 ANGLE MEASUREMENT 5-6 Changing the Horizontal Angle from Clockwise to Counterclockwise Press [F5] [MODE] to enter mode B. Press [F2] [ANG SET] to display the Angle setting screen. Press [F4] [h] to move the cursor to “3. R/L REVERSE”. H. angle 20"30'92° H. dst. V. dst. 1.ANGLE / %GRADE : ANGLE 2.H. ANGLE INPUT : 092° 30' 20" 3.R/L REVERSE : RIGHT 1.ANGLE / %GRADE : ...

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