User manual HOLUX GM-82

[. . . ] 3 1. 3. 5 Interfaces. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Operational characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2. 1 Initialization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2. 2 Navigation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] 3V Rechargeable Lithium cell battery, up to 1000 hours discharge. MCX antenna connector: Active . 1. 3. 4 Performance 1) Tracks up to 12 satellites. 3 GM-82 User's manual 2) Update rate: 1 second. 3) Acquisition time: Reacquisition Hot start Warm start Cold start 4) Position accuracy: Non DGPS (Differential GPS) Position 5~25 Velocity 0. 1 Time 1 DGPS (Differential GPS) Position Velocity EGNOS/WAAS Position 5) Dynamic Conditions: Altitude Velocity Acceleration Jerk 18, 000 515 4 20 meters(60, 000 feet) max meters/second (700 knots) max G, max meters/second³, max 1 to 5 0. 05 < 2. 2 <5 meter CEP meters/second. microsecond synchronized GPS time meters, typical meters/second, typical meters, horizontal 95% of time meters, vertical 95% of time 0. 1 8 38 45 sec, averaged sec. averaged 1. 3. 5 Interfaces 1) Dual communication channel TTL or RS232 levels, with user selectable baud rate (4800-Default, 9600, 19200, 38400). 2) NMEA 0183 Version 2. 2 ASCII output (GGA, GSA, GSV, RMC (VTG and GLL for optional)). 3) Real-time Differential Correction input (RTCM SC-104 message types 1, 2 and 9). 2. Operational characteristics 2. 1 Initialization As soon as the initial self-test is complete, the GM-82 begins the process of satellite acquisition and tracking automatically. Under normal circumstances, it takes approximately 45 seconds to achieve a position fix, 38 seconds if ephemeris data is known. After a position fix has been calculated, information about valid position, velocity and time is transmitted over the output channel. The GM-82 utilizes initial data, such as last stored position, date, time and satellite orbital data, to achieve maximum acquisition performance. If significant inaccuracy exists in the initial data, or the orbital data is obsolete, it may take more time to achieve a navigation solution. The GM-82 Auto-locate feature is capable of automatically determining a navigation solution without intervention from the host system. However, acquisition performance can be improved as the host system initializes the GM-82 in the following situation: Moving further than 500 kilometers. Failure of Data storage due to the inactive internal memory battery. 4 GM-82 User's manual 2. 2 Navigation After the acquisition process is complete, the GM-82 sends valid navigation information over output channels. These data include: 1) 2) 3) 4) 5) Latitude/longitude/altitude Velocity Date/time Error estimates Satellite and receiver status 2. 3 Manufacturing Default: Datum: WGS84. Output: GGA, GSA, GSV, RMC or by demand. DGPS: RTCM SC-104(Type 1, 2, 9) or WAAS (in USA area) or EGNOS (in European area) 3. Hardware interface 3. 1 Standard Model GM-82 GM-82-A W/ angle MCX connector and standard hole to hole dimension 5 GM-82 User's manual J1 connector pin definition: Pin # Name 1 NC 2 VCC_5V 3 VBAT 4 NC 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 PBRESEN GPIO1 GPIO2 GPIO3 GPIO4 GND TXA RXA GND TXB RXB GND GPIO5 GND TIMEMARK NC Description No function Regulated 5. 0V +/-5% input power, 80mA typical. No function Manual reset input, ground to reset receiver. The minimum plus width is 150 ms reset signal. [. . . ] GGA, GSA, GSV, RMC or by demand. 5. 2. 1 Setting Syntax Datum change syntax: >DOS\Sirfprog /Fdataxx. dat ­Px ­Bx ­Csh1 -Px: x is com port, 1= COM1 2 = COM2 -Bx: Baud rate, 4800, 9600, 19200 or 38400 Example: Change Datum to WGS84, Sirfprog /Fdata58. dat ­P1 ­B4800 ­Csh1 <Entry> After change datum, the new datum will keep in SRAM. If long time (more than 20 days) no power supplied to GM82, user must resend datum to GM82 when power on. 5. 2. 2 Addition Software SiRFdemo is the Evaluation Receiver configuration and monitoring software provided with the GM-82. This software can be used to monitor real-time operation of the GM-82 Receiver, log data for analysis, upload new software to the Receiver, and configure the Receiver operation. See setup. pdf for more information on the use and operation of SiRFdemo software. 12 GM-82 User's manual 6. [. . . ]