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Evaluation Kit time and frequency reference products User Guide Abstract This document describes the structure and use of the EVK-M8F-0-00 evaluation kit and provides information for evaluating and testing u-blox M8 time and frequency reference technology. www.u-blox.com UBX-14005459 - R04...
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EVK-M8F-0-00 - User Guide Document Information Title EVK-M8F-0-00 Evaluation Kit Subtitle time and frequency reference products Document type User Guide Document number UBX-14005459 Revision and Date 06-Jul-2015 Document status Early Production Information Document status explanation Objective Specification Document contains target values. Revised and supplementary data will be published later.
EVK-M8F-0-00 User Guide Preface Using this guide This guide assumes, the user has basic computer skills and is familiar with the Windows Graphical User Interface (GUI) and GNSS receiver environments. The following symbols are used in the document to highlight information: A warning symbol indicates actions that could negatively impact or damage the device.
EVK-M8F-0-00 User Guide Contents Preface ..........................3 Using this guide ............................... 3 Warnings and certifications ..........................3 Contents ..........................4 Product description ...................... 6 Overview .............................. 6 Kit includes ............................6 Software and documentation ....................... 6 1.3.1 u-center GNSS evaluation software ....................6 System requirements ..........................
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EVK-M8F-0-00 User Guide Common evaluation pitfalls ..................19 Related documents......................20 Revision history ........................ 20 Contact ..........................21 UBX-14005459 - R04 Early Production Information Contents Page 5 of 21...
Additionally, the dedicated EXTENSION connector in the EVK-M8F-0-00 provides access to time and frequency interface signals. 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.
Power Supply 5V via USB or external powered via extra power supply through front connector pin 14 (V5_IN) 13 (GND) Normal Operating temperature -40°C to +65°C Table 2: EVK-M8F-0-00 Specifications UBX-14005459 - R04 Early Production Information Specifications Page 7 of 21...
EVK-M8F-0-00 User Guide 3 Getting Started 3.1 Software installation Installation of the EVK-M8 software and documentation requires Internet access. See the Quick Start card for the URL where the EVK files are located. Choose the “Software only” or “Software and documentation” installation package from the u-blox website. Once the zip file is downloaded, unzip the file in Tools folder and double-click the extracted exe file.
Figure 1: Connecting the unit for power supply and communication 4.2 Active antenna EVK-M8F-0-00 evaluation kit includes a GPS / GLONASS / BeiDou antenna with a 3 m cable. It is possible to connect various active and passive GNSS antennas with SMA connectors to the evaluation unit.
EVK-M8F-0-00 User Guide The Antenna connector is only to be used with a GNSS antenna or simulator. Do not connect this equipment to cable distribution systems. 4.3.2 USB A USB V2.0 compatible serial port is featured for data communication and power supply.
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EVK-M8F-0-00 User Guide 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.
EVK-M8F-0-00 User Guide 4.3.8 Timing Interface Connector (EXTENSION) This 12-pin EXTENSION-connector (J5) provides access to additional signals specific to the time and frequency reference products. Each signal pin has a neighboring ground pin allowing connections to be made readily by short twisted pairs.
EVK-M8F-0-00 User Guide 5 Measuring tracking current To measure the tracking current with EVK-M8F, follow these steps: 1. Connect a voltmeter capable of measuring average current across VCC and MODVCC 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 3.
EVK-M8F-0-00 User Guide 6 Board layout Figure 5 shows the board layout of EVK-M8F-0-00. See Table 7 for the component list of the EVB. Figure 5: Board layout UBX-14005459 - R04 Early Production Information Board layout Page 14 of 21...
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EVK-M8F-0-00 User Guide PART DESCRIPTION GNSS RECEIVER C10 C14 C16 C19 C2 C6 C7 C8 CAP CER X7R 0603 100N 10% 10V C11 C13 CAP CER X5R 0603 1U0 10% 6.3V C12 C9 CAP CER X7R 0603 10N 10% 25V...
EVK-M8F-0-00 - User Guide 7 Schematic Figure 6: Schematic EVK-M8F-0-00: DNI=TRUE in the schematic means: Component not installed UBX-14005459 - R04 Early Production Information Schematic Page 16 of 21...
EVK-M8F-0-00 - User Guide 8 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.
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EVK-M8F-0-00 - User Guide The EVK-M8F does not preserve the configuration in case of reset u-blox M8 GNSS technology uses a slightly different concept than most other GNSS receivers do. Settings are initially stored to volatile memory. In order to save them permanently, sending a second command is required.
EVK-M8F-0-00 - User Guide 9 Common evaluation pitfalls • 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).
Objective Specification 20-Aug-2014 isim Advance Information. Updated section 1.2 and section 4.3.8 (removed timing interface cable). 07-Oct-2014 julu Early Production Information 06-Jul-2015 julu Renamed document as EVK-M8F-0-00 specific UBX-14005459 - R04 Early Production Information Related documents Page 20 of 21...
EVK-M8F-0-00 - 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...