In s tr u c ti o n M a n u a l 012-09919A GPS Position Sensor PS-2175 ®
G P S P o s i ti o n S e n s o r T a b le o f C o n te n t s Contents Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Sensor Set-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Modes . . . . . . . . . . . . . . . . . . . . . . .
GPS Position Sensor PS-2175 Included Equipment Part Number GPS Position Sensor PS-2175 PASPORT Extension Cable PS-2500 Required Equipment Xplorer GLX or other PASPORT Interface 1 See PASCO catalog or www.pasco.com Recommended Equipment USB Flash Drive 2 PS-2551 or similar My World GIS software See PASCO catalog or www.pasco.
G P S P o s i ti o n S e n s o r T h e o r y o f O p e r a t io n Theory of Operation GPS stands for Global Positioning System. This system is maintained by the U.S. government for use by people anywhere on earth. The system consists of more than 24 satellites orbiting at an altitude of about 20000 km. The satellites broadcast ranging signals and necessary data for the Position Sensor to determine its own position and velocity.
Model No. PS-2175 Modes Modes LED indicator lights in the GPS Position Sensor tell you whether or not the sensor is ready to make measurements. If you see the green DATA indicator, the sensor is ready. If you see the red SEARCH indicator (or both green and red), the sensor is not ready. At initial power on, the sensor enters initial search mode, in which it searches the sky for available satellites. Initial search mode typically lasts between 30 seconds and 2 minutes.
G P S P o s i ti o n S e n s o r Se n s o r D a ta Sensor Data The sensor simultaneously reports several different measurements. When the GLX records data, it records all of these measurements, even if they are not displayed. The measurements are described in Table 2. Table 2: Measurements Measurement 1 Range Resolution Latitude ±90.000000° 0.000001° (~2 m) Longitude ±180.000000° 0.000001° (~2 m) Altitude 0 to 18000 m 1m 34 m Horizontal speed 0 to 515.00 m/s 0.01 m/s 1.
Model No. PS-2175 Typical GLX Procedures Typical GLX Procedures For complete instructions on using the GLX to collect, display, and analyze data, refer to the Xplorer GLX Users’ Guide. Display Relative Displacement in a Graph The Latitude Relative and Longitude Relative measurements are the north-south and east-west displacements (in meters) from your starting point. The starting point is reset every time you start data recording. Follow these steps to plot Latitude Relative versus Longitude Relative. 1.
GP S P o s i ti o n S e n s o r Tr a n s f e r D a t a to D a ta S tu d io Change the Sampling Rate By default, the GLX records data from the Position Sensor once every second. Follow these steps to select a longer time between samples. , F4 1. Press to open the Sensors screen. 2. Use the left and right arrow keys to select the GPS Position Sensor icon at the top of the screen. 3. Press the down arrow key to highlight Sample Rate Unit.
Model No. PS-2175 P lo t D a t a in M y W o r ld G I S ( e x a m p le ) Plot Data in My World GIS (example) Once you have collected data on the GLX with the GPS Position Sensor and other sensors, you can import it into My World software to be plotted on a map or aerial photograph and combined with other datasets. This procedure requires a USB flash drive and a computer with My World installed.
G P S P o s i ti o n S e n s o r U s i n g t h e P o s i ti o n S e n s o r w it h O th e r I n t e r f a c e s The Import Text Data window appears. 11. Change the Begin Importing on Line setting to 2. 12. Click OK. The Save Imported Data As window appears. 13. Type the filename Temperature Walk.tsv. Click Save. This new dataset, Temperature Walk, appears in the Data Library on the left side of your screen. III. Plot Data 1. Drag Temperature Walk from the Data Library to the Layer List. 2.
Model No. PS-2175 S p e c if i c a t io n s Specifications Position accuracy 10 m, 2D RMS 5 m, 2D RMS with WAAS enabled Velocity accuracy 0.1 m/s Maximum sample rate 1 Hz Time to first fix (average) 42 s, cold start 38 s, warm start 1 s, hot start Channels 20 Technical Support For assistance with any PASCO product, contact PASCO at: Address: PASCO scientific 10101 Foothills Blvd. Roseville, CA 95747-7100 Phone: 916-786-3800 (worldwide) 800-772-8700 (U.S.) Fax: (916) 786-7565 Web: www.pasco.
