GPS-Handheld Länge & Breite und Fläche des F &

GPS Handheld Length & Width & Area & Fare Meter Adopting the most advanced all-dimensional spiral antenna imported from USA; Fast satellite signal searching, and effective use of 24 satellites to ensure the high precision of the measurement. Product Brief Introduction: The product is a new high-tech product. It measures the length, width and area of the farm land through satellites, and also has the functions of unit price set and fare calculating. The product has been widely used for its creative handheld design and high performance and price ratio. Product Main Functions: 1. Farmland area measurement; 2. Farmland length and width measurement; 3. Able to set the unit-price from 30 CNY to 200 CNY, having unit-price memory facility; 4. Farmland area date showing in terms of square meter or acres; 5. .Displaying the unit-price and total price; 6. Current satellite signal intensity showing; 7. Current satellite signal positioning precision showing; 8. 2400mAh lithium cell, 2000mAh 2500mAh Ni-MH rechargeable battery and AAA ordinary dry battery as power supply; 9. Charging circuit stetted inside. Product Electronic Characteristics: Operation Voltage 3.3V---5.0V Battery Type 2400mAh lithium cell or AAA dry batery Operation Hour >30 hours Operation Current 300mA Charging Period 6---8 hours Power Consumption 0.2W---0.35W Product Operation Instruction: Schematic Diagram under Switch-off Regime: 1. On-off Key of the device: push up to turn on the power, push down to turn off the power; 2. Automatic Measurement Button: we suggest measure no- quadrilateral shape farmland with this method; 3. Reset Button: press to reset the device to task state when the user make sure do not need the data on the LCD any more; 4. Four-point Measurement Button: we suggest use this measuring method to measure quadrilateral shape farmland; 5. Spiral Satellite Antenna: used to receive satellite signals. During the measurement process, the optimum position of the Built-in Satellite Antenna is horizontal (that is to keep the LCD upward), downward or wide-angle is forbidden. 6. Battery Charging Interface. Schematic Diagram under Switch-on Regime: Schematic Diagram under Switch-on Regime (short after switch-on) 7. Current GPS Precision Grade: the user can start his measurement when number 01 or 02 occurred; 8. Current GPS Signal Intensity: when the device is newly opened, the signal intensity is 0. 9. Built-in Battery Electronic Quality Indicator. Schematic Diagram under Switch-on Regime (outdoor, 5 minutes later): 5 minutes later, the device receives the satellite signal. When the signal precision grade is 01 or 02, the “searching the satellite signal” will disappear, and the “A, B, C, D” button will be flashing on the LCD. Then, the device is in Task State. Method of Application: Unite-price Setting: The product’s default unite-price setting is 30 CNY / Acre. Within 2 minutes after turning on the device, do not press the Automatic Measurement Button and Four-point Measurement Button, then press the Reset Button to set unite-price you need. When you reach the highest unite-price is 200 CNY, press the Reset Button again to go back to the Default Unite-price 30 CNY. When you have decided the unite-price you need, press the Automatic Measurement Button or Four-point Measurement, then Button and press the Reset Button to finally set it. Or just wait 2 minutes to finally set it. Automatic Measurement Method: Turn on the power, begin the measurement after GPS Signal is well received, the GPS Positioning Precision Grade is 01 or 02 and the “searching the satellite” disappears. This measurement can be used in the measurement of farmland of any shape. Press the Automatic Measurement Button to begin the measurement, then, keeping the LCD upward and keeping the device 30cm to 40cm away from your body, go along the boundary line of the farmland counter clock wise for a round. Then press the Automatic Measurement Button the second time to finish the measurement. The farmland area will display on the LCD in term of Acre. And now, you can press the Automatic Measurement Button to display the area in term of Square Meter. If you do not need the data after measurement, press the Reset Button to go back to Task State to begin a new measurement.Four-point Measurement: For the quadrilateral shape farmland, user can use Four-point Measurement Method. Turn on the power, begin the measurement after GPS Signal is well received, the GPS Positioning Precision Grade is 01 or 02 and the “searching the satellite” disappears. Choose an angle among the four as the starting point, keeping the device 30cm to 40cm away from your body and keeping the LCD upward, then stop at the starting point for 5 seconds, and press the Four-point Measurement Button to begin the measurement. Go to the second angel in counter clock wise, stopping for 5 seconds and press the Four-point Measurement Button. Go to the third angel in counter clock wise, stopping there for 5 seconds and press the Four-point Measurement Button. Go to the forth angel in counter clock wise, stopping there for 5 seconds and press the Four-point Measurement Button. Go to the first angel (the starting point) in counter clock wise, stopping there for 5 seconds and press the Four-point Measurement Button to finish the measurement. Then, the area unite “Acre” c switch to area unite “Square Meters” by pressing the Four-point Measurement Button.