User manual UNI-T DT 838

[. . . ] AC Power Charger (optional) DC Car Power Charger 2. 2 Power Switch Power on: Press the power button 1 second until the GPS status LED is on. Power off: Press the power button 1 second until the GPS status LED is off. Reset: Press the power button for 5 seconds. 2. 3 LED Function Bluetooth Status LED (Blue): Blinking (Slowly) ---- Not connected to any Bluetooth device. GPS Status LED (Green): Blinking ---- GPS position is fixed Steady light ---- GPS position is not fixed Battery Status LED (Red/Yellow): Red ---- Battery power is critically low. [. . . ] GPS Status LED (Green): Blinking ---- GPS position is fixed Steady light ---- GPS position is not fixed Battery Status LED (Red/Yellow): Red ---- Battery power is critically low. LED off ---- Battery is partially full or fully charged. 2. 4 Power-saving Function When you start the power of the Bluetooth GPS Receiver DT 838, if the Bluetooth is not connected to any devices within 10 minutes, DT 838 will turn off the power automatically, and all the LED will go off simultaneously. 3 3. Specification 3. 1 System Specification GPS standard GPS Antenna Bluetooth standard Operation range Bluetooth Default PIN Operation time Charge time Auto Shut-Off Battery Charging POWER BUTTON Power On Power Off Perform reset STATUS LED'S GPS status Flashing ­ GPS position is fixed Steady ­ GPS position is not fixed Power status Solid Red ­ Battery Low Solid Amber ­ Battery is being charged Bluetooth status Flashing (Slow) ­ Not connected to a Bluetooth device Flashing (Fast) ­ Connected to a Bluetooth device TEMPERATURE Operating Storage Humidity POWER DC supplies BATTERY Battery Cell Type MECHANICAL Dimension 82. 0 mm x 41. 0 mm x 13. 4 mm Lithium ­ion Rechargeable Battery 4. 5V~5. 5V / 0. 5A -10°C ~ 60°C (14°F ~ 140°F) -20°C ~ 70°C (-4°F ~ 158°F) Operational up to 95% non-condensing Pressing the Power button for approximately 1 second will cause the unit to turn ON Pressing the Power button for approximately 1 second will cause the unit to turn OFF Pressing the ON-OFF button for approximately 5 seconds will cause the unit to reset itself. SiRF Star Built-in ceramic patch antenna Bluetooth V2. 0 10 meters (33 feet) 0000 Up to 11 hrs 4~5 hrs When no active Bluetooth connection has been detected within 10 minutes. Mini USB connector (not for data) Electrical Characteristics 4 3. 2 GPS Specification GPS Chipset Frequency C/A Code Channels SiRF Star III L1, 1575. 42 MHz 1. 023 MHz chip rate 20 channel all-in-view tracking Electrical Characteristics ACCURACY Position Horizontal 10 meters, 2D RMS 1-5 meters 2D RMS, WAAS corrected Velocity Time DATUM Datum ACQUISITION RATE Hot start Warm start Cold start Reacquisition PROTOCOL GPS Protocol GPS Output format DYNAMIC CONDITION Acceleration Limit Altitude Limit Velocity Limit Jerk Limit Less than 4g 18, 000 meters (60, 000 feet) max. 20 m/sec**3 Default: NMEA 0183 (Secondary: SiRF binary) GGA(1sec), GSA(1sec), GSV(5sec), RMC(1sec), GLL, VTG is optional 1 sec. , average 38 sec. , average 42 sec. , average 0. 1 sec. average Default: WGS-84 0. 1m/sec 1 micro-second synchronized to GPS time 3. 3 Bluetooth Specification Bluetooth Chipset Frequency Standard Bluetooth Profile Operation Range Output Power CSR BC4 2402MHz to 2480MHz Bluetooth V2. 0 SPP (Serial Port Profile) 10 meters (33 feet) 0 dBm (class II) Electrical Characteristics 5 4. Please refer to the user manual of PDA to enable the Bluetooth of PDA connecting to the DT 838. Some PDAs may need the Bluetooth passkey, the passkey is "0000". Run the suitable mapping/navigation software and select the correct COM port & baud rate: 38400 4. 2. Check your DEVICE MANAGER to confirm the COM Port number assigned to the GPS. Then be sure this is the same COM port number configured in your application. Be sure your Baud rate is configured correctly at: Baud Rate: 38400 Data bit: 8 Parity: None Stop Bit: 1 Flow Control: None Configure the GPS Info utility with the correct COM Port and test your GPS receiver first before using it in your application. 2. 3. Will the GPS work with other Street Mapping software?Globalsat GPS receivers provide standard NMEA data for mapping software to use and convert to coordinates and should work well with most any NMEA compliant software on the market today. The USB GPS is WAAS/EGNOS capable, and for units sold in North America through authorized resellers, these units are WAAS/EGNOS enabled unless otherwise stated. Accuracy can be up to 5 meters 2D RMS with WAAS enabled and 10-15 meters 2D RMS WAAS disabled 9 What is ideal GPS environment?Buildings, covered parking areas, tunnels and dense foliage can cause the GPS receiver to be unable to get a location fix. If you are parked in a covered parking lot or near a tall building, it is recommended that you drive away until you have a clear view of the sky before using the GPS receiver. You may need to give the GPS a few minutes to find or get a fix its location. If your PC is on and the COM port was configured properly, the GPS receiver is on and receiving the streaming GPS data. [. . . ] You may need to give the GPS a few minutes to find or get a fix its location. If your PC is on and the COM port was configured properly, the GPS receiver is on and receiving the streaming GPS data. In addition, the Globalsat GPS has a built-in LED status indicator that shows the following: LED OFF: GPS receiver is off (no power). LED FLASHING: Position fix established and GPS signals are being received. [. . . ]