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Ublox EVK-M101, User Manual

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EVK-M101, EVK-M101C - User guide

6 Block diagram

EVK-M101/C block diagram providing an overview on supply voltages, current measurement and
communication interfaces is shown in

.

Figure 4: EVK-M101/C block diagram

UBX-21003949 - R04

6 Block diagram

Page 15 of 30

C1-Public

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Summary of Contents for EVK-M101

Page 1: ...t User guide Abstract This document describes the structure and use of the EVK M101 and the EVK M101C evaluation kits and provides information for evaluating u blox M10 positioning technology www u bl...

Page 2: ...d designs included in this document Copying reproduction or modi cation of this document or any part thereof is only permitted with the express written permission of u blox Disclosure to third parties...

Page 3: ...4 1 4 UART 10 4 1 5 SPI 11 4 1 6 I2C 11 4 2 GNSS input signal 11 4 2 1 Antenna connector 11 4 3 Time pulse 12 4 4 Reset button 12 4 5 Safe boot button 12 4 6 LED 12 4 7 Flash memory 12 4 8 Super capac...

Page 4: ...9 Troubleshooting 24 10 Common evaluation pitfalls 26 Related documents 27 Revision history 28 Appendix 29 A Glossary 29...

Page 5: ...sed with a desktop or a laptop making them the perfect companion through all stages of design in projects Evaluation kit Description Related products EVK M101 u blox M10 evaluation kit with TCXO u blo...

Page 6: ...2 2 4 of IEC 62368 1 2018 4 for more information on the PS1 class In addition to a limited power source only ES1 class circuits are to be connected to the EVK M101 C including interfaces and antennas...

Page 7: ...Refer to section Device description for more information on the interfaces USB C Connect via USB C port that is connected internally to an FTDI USB to UART converter Set interface switch to UART optio...

Page 8: ...ate the available digital interfaces additional measurement equipment and devices can be connected to the 14 pin connector on the front panel of the EVK unit Do not drive any of the IO pins when the E...

Page 9: ...surement node 1 Connected to backup supply super capacitor Current measured from voltage over a 100 1 resistor between pins 11 BCKP I1 and 10 BCKP I2 Pin 11 BCKP I1 is at higher potential 10 BCKP I2 O...

Page 10: ...PC Windows creates a virtual COM port to the PC This newly created virtual COM port needs to be selected in the u center 2 evaluation tool for communicating with the receiver EVK M101 C supports USB t...

Page 11: ...iver 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 th...

Page 12: ...re is no GNSS x the LED will only be lit without ashing 4 7 Flash memory EVK M101 C has a 16 Mbit SPI ash that is connected to the u blox M10 receiver By default it can be used to Store the current co...

Page 13: ...On the EVK M101 C the external interrupt EXTINT signal is available on the 14 pin connector and on the RS 232 port The EXTINT signal can be used for time mark and time aiding features of the receiver...

Page 14: ...ead the voltage and average if necessary on the voltmeter and convert to current 1 mV equals 10 mA 4 Perform the test with good signals and clear sky view to ensure that the receiver can acquire the s...

Page 15: ...k diagram EVK M101 C block diagram providing an overview on supply voltages current measurement and communication interfaces is shown in Figure 4 Figure 4 EVK M101 C block diagram UBX 21003949 R04 6 B...

Page 16: ...EVK M101 EVK M101C User guide 7 Board layout Figure 5 EVK M101 C board layout Figure 6 EVK M101 C PCB UBX 21003949 R04 7 Board layout Page 16 of 30 C1 Public...

Page 17: ...the o state of On O power save mode PSMOO Therefore it is recommended to save the receiver con guration to RAM and BBR or permanently in Flash The BBR content is maintained as long as the backup batt...

Page 18: ...as shown in Figure 9 EVK M101 current sensors Do not use this COM port EVK M101 I2C Do not use this COM port EVK M101 UART Use this COM port for UART communication with the receiver via the FTDI USB t...

Page 19: ...e UART communication to the receiver can be con gured in the CFG UART1 BAUDRATE con guration key or in the CFG UART2 BAUDRATE con guration key depending on the UART interface that is in use The defaul...

Page 20: ...selecting the constellations in the GNSS Con guration View as shown in Figure 11 Figure 11 EVK M101 C receiver GNSS con guration 8 3 Navigation update rate The CFG RATE MEAS con guration key that is...

Page 21: ...n gured to high gain mode Due to the external LNA on the RF path of the EVK this mode is not recommended to be used on the EVK LOWGAIN The internal LNA of the receiver is con gured to low gain mode Th...

Page 22: ...nge of 0 5 to 10 seconds In this mode the receiver does not shut down completely between position xes but uses low power tracking instead BeiDou B1C is not supported in power save mode PSM Some PSM st...

Page 23: ...he software standby mode the wakeup source can be con gured in UBX RXM PMREQ message The available wakeup sources are EXTINT SPI CS and UART RxD signals The duration in the UBX RXM PMREQ message can b...

Page 24: ...pplication running on the computer that is using the same port There is no data received from the EVK after connecting the EVK to my application Check the interface switch position and ensure that it...

Page 25: ...can be in the past resulting in the receiver to jump backwards in time This can have serious side e ects on the performance of GNSS receivers The solution is to con gure the GPS week rollover value t...

Page 26: ...A low C N0 will result in a prolonged TTFF and more position drift Try to feed the same signal to all receivers in parallel i e through a splitter with identical cable length the receivers will other...

Page 27: ...equipment Safety Standard IEC 62368 1 2018 5 u center 2 User guide www u blox com en info u center 2 user guide 6 u blox M10 SPG 5 10 Interface description UBX 21035062 UBX 21035061 NDA required For...

Page 28: ...ation information R03 06 Apr 2022 oola Added SPG 5 10 related updates and replaced references to u center with u center 2 Added power save mode con guration Updated troubleshooting and device con gura...

Page 29: ...ischarge Galileo European navigation satellite system GLONASS Russian navigation satellite system GND Ground GNSS Global Navigation Satellite System GPS Global Positioning System IEC International Ele...

Page 30: ...EVK M101 EVK M101C User guide Contact For further support and contact information visit us at www u blox com support UBX 21003949 R04 Page 30 of 30 C1 Public...

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