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Related Manuals for Ublox EVK-M8T-0-01
Summary of Contents for Ublox EVK-M8T-0-01
- Page 1 EVK-M8T Evaluation Kit User Guide Abstract This document describes the structure and use of the EVK-M8T evaluation kit and provides information for evaluating and testing u-blox M8 positioning technology for timing and raw data applications. www.u-blox.com UBX-14041540 - R05...
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Page 2: Document Information
Product name Type number Hardware version ROM/FLASH version EVK-M8T EVK-M8T-0-01 Flash FW 3.01 TIM 1.10 UBX-16005636 European Union regulatory compliance EVK-M8T complies with all relevant requirements for RED 2014/53/EU. The EVK-M8T Declaration of Conformity (DoC) is available at www.u-blox.com under Support --> Product Resources --> Conformity Declaration. -
Page 3: Table Of Contents
EVK-M8T - User Guide Contents Document Information ..........................2 Contents ................................3 Product description ..........................4 Overview ................................ 4 1.2 Kit includes ..............................4 1.3 Software and documentation........................4 1.3.1 u-center GNSS evaluation software ....................4 1.4 System requirements ..........................4 Specifications ............................ -
Page 4: Product Description
EVK-M8T User Guide Product description Overview EVK-M8T evaluation kit makes evaluating the high performance u-blox M8T positioning products simple. The built-in USB interface provides both power supply and high-speed data transfer, and eliminates the need for an external power supply. The u-blox evaluation kits are compact, and their user friendly interface and power supply make them ideally suited for use in laboratories, vehicles and outdoor locations. -
Page 5: Specifications
EVK-M8T User Guide Specifications Parameter Specification Serial Interfaces 1 USB V2.0 1 RS232, max. baud rate 921,6 kBd DB9 +/- 12 V level 14 pin – 3.3 V logic 1 DDC (I2C compatible) max. 400 kHz 1 SPI – clock signal max. 5,5 MHz – SPI DATA max. 1 Mbit/s Timing Interfaces 2 Time-pulse outputs 1 Time-mark input... -
Page 6: Getting Started
EVK-M8T User Guide Getting Started 3.1 Software installation ☞ Installation of the EVK-M8T software and documentation requires Internet access. Choose Software only or Software and documentation installation package from u-blox website. Once the zip file is downloaded and unzipped, unzip the file in Tools folder and double-click the extracted exe file. -
Page 7: Device Description
EVK-M8T User Guide Device description 4.1 Interface connection and measurement For connecting the EVK to a PC, use a standard SUBD-9 cable and the included Micro-USB cable. Additional measurement equipment can be connected to the front connector. Figure 1: Connecting the unit for power supply and communication 4.2 Active antenna EVK-M8 evaluation kits include a GPS / GLONASS / BeiDou antenna with a 3 m cable. -
Page 8: Uart
EVK-M8T User Guide 4.3.3 UART The evaluation unit includes an RS232 port for serial communication that is compatible with PC serial ports. Connect using a straight RS232 serial cable with male and female connectors to the port on your PC. The maximum cable length is < 3.0 meters. To configure the RS232 port, use the CFG-PRT command in the u-center application. -
Page 9: Test Connector
EVK-M8T User Guide 4.3.7 Test Connector This 14-pin test-connector provides additional functionality to the EVK, allowing access to the interface pins and an ability to measure the current used by the EVK. All pins are ESD protected. For accurate measurements, it is recommended to use a cable of at most 1 meter in length. Figure 3 shows an example of a power supply connected to the test connector by using standard adapter cables from the manufacture Hirschmann. -
Page 10: Led
EVK-M8T User Guide 4.3.8 LED On the front panel of the unit, a single blue LED shows the time pulse 1 signal. The LED starts flashing one pulse per second during a GNSS fix. If there is no GNSS fit, the LED will only light, without flashing. -
Page 11: Measuring Tracking Current
EVK-M8T User Guide Measuring tracking current To measure the tracking current with EVK-M8T, follow these steps: Connect a true RMS voltmeter across P1A (VCC) and P1B of the front connector. (See Figure 4.) 2. Wait 12 minutes to download all GNSS orbital data, or download all the Aiding Data via the AssistNow Online service. -
Page 12: Testing Power Save Mode
EVK-M8T User Guide Testing Power Save Mode When testing Power Save Mode with EVK-M8, observe the following points: • When configuring Power Save Mode you must set up the parameters using the CFG-PM2 message first and then enable Power Save Mode using CFG-RXM. The Configuration view or Messages view of the u-center evaluation software can be used to do this. -
Page 13: Block Diagram
EVK-M8T User Guide Block diagram Figure 5: EVK-M8T block diagram UBX-14041540 - R05 Block diagram Page 13 of 22 Early Production Information... -
Page 14: Board Layout
EVK-M8T User Guide Board layout Figure 6 shows the EVK-M8T board layout (PCB Version B). See Table 6 for the component list of the EVB. Figure 6: EVB-M8T layout UBX-14041540 - R05 Board layout Page 14 of 22 Early Production Information... - Page 15 EVK-M8T User Guide PART DESCRIPTION GPS RECEIVER U-BLOX NEO-M8T-0-00 -40/+85C BATTERY HOLDER RENATA CR2450N 3V C1 C11 C13 C22 CAP CER X5R 0603 1U0 10% 6.3V C2 C4 C6 C7 C8 C10 C14 C16 C19 CAP CER X7R 0603 100N 10% 10V C3 C25 CAP CER X5R 1210 10U 10% 10V CAP CER X7R 0402 1N0 10% 16V...
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Page 16: Schematic
EVK-M8T - User Guide Schematic Figure 7: Schematic EVK-M8T: DNI=TRUE in the schematic means: Component not installed UBX-14041540 - R05 Schematic Page 16 of 22 Early Production Information... -
Page 17: Battery Replacement
EVK-M8T - User Guide 10 Battery replacement To replace the battery (Number 5 in Figure 8), open the unit (unscrew four screws on the front panel). Figure 8: EVK-M8T battery location UBX-14041540 - R05 Battery replacement Page 17 of 22 Early Production Information... -
Page 18: Troubleshooting
EVK-M8T - User Guide 11 Troubleshooting My application (e.g. u-center) does not receive anything Check whether the blue LED on the evaluation unit is blinking. Also make sure that the USB cable is properly connected to the evaluation unit and the PC. By default, the evaluation unit outputs NMEA protocol on Serial Port 1 at 9600 Bd, or on the USB. - Page 19 EVK-M8T - User Guide The EVK-M8T does not meet the TTFF specification Make sure the antenna has a good sky view. An obstructed view leads to prolonged startup times. In a well-designed system, the average of the C/No ratio of high elevation satellites should be in the range of 40 dBHz to about 50 dBHz.
- Page 20 EVK-M8T - User Guide 12 Common evaluation pitfalls • A parameter may have the same name but a different definition. GNSS receivers may have a similar size, price and power consumption, but can still have different functionalities (e.g. no support for passive antennas, different temperature range). Also, the definitions of hot, warm, and cold start times may differ between suppliers.
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Page 21: Common Evaluation Pitfalls
20-May-2018 olep battery from EVK content (section 1.2) and updated section 4.3.9 accordingly. Changed product type number to EVK-M8T-0-01 (PCB revision B, fixed TP1 availability in D-SUB connector), Table 4, Figure 6 and Figure 7 updated. UBX-14041540 - R05 Common evaluation pitfalls... -
Page 22: Contact
EVK-M8T - User Guide Contact For complete contact information, visit us at www.u-blox.com. u-blox Offices North, Central and South America Headquarters Asia, Australia, Pacific Europe, Middle East, Africa u-blox America, Inc. u-blox Singapore Pte. Ltd. u-blox AG Phone: +1 703 483 3180 Phone: +65 6734 3811 E-mail:...