Table of Contents
Advertisement
Quick Links
Advertisement
Table of Contents
Related Manuals for u-blox EVK-M91-00-01
Summary of Contents for u-blox EVK-M91-00-01
- Page 1 EVK-M91 Evaluation kit User guide Abstract This document describes the structure and use of the EVK-M91 evaluation kit and provides information for evaluating and testing u- blox M9 positioning technology. www.u-blox.com UBX-19056858 - R04 C1-Public...
- Page 2 fitness for a particular purpose of the information. This document may be revised by u-blox at any time without notice. For the most recent documents, visit www.u-blox.com.
-
Page 3: Table Of Contents
EVK-M91 - User guide Contents 1 Product description......................5 1.1 Overview..............................5 1.2 Kit contents..............................5 1.3 System requirements..........................5 2 Specifications......................... 6 2.1 Safety precautions..........................6 3 Getting started........................7 3.1 u-center installation..........................7 3.2 Hardware installation..........................7 3.3 Serial port default configuration......................7 4 Approvals..........................9 5 Device description...................... - Page 4 Revision history........................26...
-
Page 5: Product Description
EVK-M91 has versatile interfaces and measurement points that enable advanced evaluation needs. u-blox evaluation kits are compact, and their user-friendly interface and power supply make them ideally suited for use in laboratories or vehicles. Furthermore, they can be used with a PDA or a notebook PC, making them the perfect companion through all stages of design-in projects. -
Page 6: Specifications
EVK-M91 - User guide 2 Specifications Parameter Specification Serial interfaces 1 USB 2.0 Type C 1 UART, max baud rate 921600 Bd RS-232 +/- 5 V level 14 pin – 3.0 V logic 1 I2C max 400 kHz 1 SPI – max SPI CLK 5.5 MHz, max data rate 1 Mbit/s Timing interfaces 1 Time pulse output Dimensions... -
Page 7: Getting Started
file. The u-center software will be installed on your system and placed under the “u-blox” folder in the “Start > Programs” menu, you can also choose the destination folder for the program installation. After a successful installation, u-center can be started from the Start menu (All Programs >... - Page 8 EVK-M91 - User guide There are also SPI, I2C and UART interfaces available for debugging and design-in purposes on the digital connector. UBX-19056858 - R04 3 Getting started Page 8 of 27 C1-Public...
-
Page 9: Approvals
EVK-M91 - User guide 4 Approvals The EVK-M91 complies with the Directive 2011/65/EU (EU RoHS 2) and its amendment Directive (EU) 2015/863 (EU RoHS 3). UBX-19056858 - R04 4 Approvals Page 9 of 27 C1-Public... -
Page 10: Device Description
EVK to a PC, use a standard SUBD-9 cable or the included USB Type-C cable depending on the interface in use. The u-blox M9 GNSS receiver has a USB interface which allows direct communication to the receiver by USB. Additional measurement equipment can be connected to the front connector. -
Page 11: Usb
USB-C 2.0 cable and then to use the u-center to configure and monitor the GNSS functions. The USB connector has a direct connection to the u-blox M9 receiver, which enables the USB interface to be used as a communication interface as well. -
Page 12: Spi
EVK-M91 - User guide Pin no. Pin name Level Description BCKP I1 3.0 V Backup supply current measurement node 1. Connected to backup supply (super capacitor). Current measured over a 100 Ω 1% resistor between pins 11 (BCKP I1) and 10 (BCKP I2). -
Page 13: Gnss Input Signal
EVK-M91 - User guide By default, the optional I2C pull-up resistors are not populated on the EVK board. The u-blox M9 GNSS receiver already contains internal pull-up resistors for normal use. If fast communication speed with long cable length is needed, the optional pull-up resistors can be placed to the reserved location on the EVK board. -
Page 14: Led
GNSS fix, the LED will only be lit, without flashing. 5.7 Flash EVK-M91 has an SPI flash that is connected to the u-blox M9 receiver. By default it can be used to: • Store the current configuration permanently • Save data logging results •... -
Page 15: Current Measurement
™ Online service. On EVK-M91, the main supply voltage for the u-blox M9 GNSS receiver is 3.0 V. The internal DCDC converter is enabled to reduce power consumption. To measure the total GNSS supply current with EVK-M91, follow these steps: Power up EVK-M91. -
Page 16: Block Diagram
EVK-M91 - User guide 7 Block diagram EVK-M91 block diagram providing an overview on supply voltages and interfaces is shown in Figure Figure 4: EVK-M91 block diagram UBX-19056858 - R04 7 Block diagram Page 16 of 27 C1-Public... -
Page 17: Board Layout
EVK-M91 - User guide 8 Board layout 8.1 PCB version B The PCB for EVK-M91 is shown in Figure Figure 5: EVK-M91 PCB UBX-19056858 - R04 8 Board layout Page 17 of 27 C1-Public... -
Page 18: External Firmware Update And Rom Firmware Evaluation
EVK-M91 - User guide 9 External firmware update and ROM firmware evaluation The EVK-M91 is delivered with the latest version of firmware. By default the EVK will boot from the external flash. It is also possible to boot from the ROM firmware on the EVK-M91. To test the ROM firmware, the flash firmware needs to be erased. - Page 19 EVK-M91 - User guide Select Tools > Firmware Update…. The firmware update window will appear as shown in Figure Figure 7: Firmware update tool Select the firmware image by clicking the ellipsis button next to Firmware image. Select Use this baud rate for update option and choose a higher baud rate, i.e., 460800 to make the firmware update faster.
- Page 20 EVK-M91 - User guide In the Additional Option box, enter command -E 1 which is an erase parameter and can be seen in the Command line as well . Click GO. Poll UBX-MON-VER again to verify the firmware and see the EVK-M91 booting from the ROM firmware as shown in Figure Figure 9: Checking EVK-M91 firmware version from u-center...
-
Page 21: Troubleshooting
When using UART, make sure the baud rate is sufficient. If the baud rate is insufficient, GNSS receivers based on u-blox M9 GNSS technology will skip excessive messages. Some serial port cards/ adapters (e.g. USB to RS-232 converter) frequently generate errors. If a communication error occurs while u-center receives a message, the message will be discarded. - Page 22 EVK-M91 - User guide Figure 10: Setting GPS week number with u-center GNSS evaluation software UBX-19056858 - R04 10 Troubleshooting Page 22 of 27 C1-Public...
-
Page 23: Common Evaluation Pitfalls
(DOP), less position drift, and lower power consumption. • When doing reacquisition tests, cover the antenna in order to block the sky view. Do not unplug the antenna since the u-blox M9 positioning technology continuously performs a noise calibration on idle channels. -
Page 24: Appendix
European navigation satellite system GLONASS Russian navigation satellite system Ground GNSS Global Navigation Satellite System Global Positioning System International Electrotechnical Commission Printed Circuit Board Radio frequency u-blox QZSS Quasi-Zenith Satellite System UBX-19056858 - R04 Appendix Page 24 of 27 C1-Public... -
Page 25: Related Documents
M9 SPG 4.04 Interface description, doc. no. UBX-21022436 u-center User guide, doc. no. UBX-13005250 Information technology equipment – Safety Standard IEC 62368-1:2018 For regular updates to u-blox documentation and to receive product change notifications please register on our homepage https://www.u-blox.com. UBX-19056858 - R04 Related documents Page 25 of 27 ... - Page 26 EVK-M91 - User guide Revision history Revision Date Name Status / comments 23-Dec-2019 msul, rmak Initial release 03-Apr-2020 msul Updated FW version to SPG 4.03 in page 2, updated RS-232 output voltage level to +/-5 V in specifications section 2, updated safety precautions in section 2.1, updated short circuit threshold value to 40mA in section 4.2.1, added antenna supervisor part on the block diagram in figure 4, updated figure 5 for PCB version B in section 7.
- Page 27 EVK-M91 - User guide Contact For further support and contact information, visit us at www.u-blox.com/support. UBX-19056858 - R04 Page 27 of 27 C1-Public...
Need help?
Do you have a question about the EVK-M91-00-01 and is the answer not in the manual?
Questions and answers