u-blox EVK-M8QCAM, User Manual

Page 1: ...stract This document describes the structure and use of the EVK M8QCAM and EVK M8CCAM evaluation kits and provides information for evaluating and testing the u blox CAM M8Q and CAM M8C GNSS chip antenna modules www u blox com UBX 14002462 R07 ...

Page 2: ... u blox com within Support Product resources Conformity Declaration This document applies to the following products Product name Type number ROM FLASH version PCN reference EVK M8QCAM EVK M8QCAM 0 01 ROM SPG 3 01 N A EVK M8CCAM EVK M8CCAM 0 01 ROM SPG 3 01 N A u blox reserves all rights to this document and the information contained herein Products names logos and designs described herein may in w...

Page 3: ...tatic Sensitive Devices ESD CAUTION RISK OF SHORT CIRCUIT OF THE BATTERY WHEN TOUCHING IT WITH CONDUCTING PARTS IN THE UNLIKELY EVENT OF A FAILURE IN THE INTERNAL PROTECTION CIRCUITRY THERE IS A RISK OF AN EXPLOSION WHEN CHARGING FULLY OR PARTIALLY DISCHARGED BATTERIES REPLACE THE BATTERY IF IT NO LONGER HAS SUFFICIENT CHARGE FOR UNIT OPERATION CONTROL THE BATTERY BEFORE USING IF THE DEVICE HAS NO...

Page 4: ...ty precautions 7 3 Getting Started 8 3 1 Software installation 8 3 2 Hardware installation 8 3 3 Serial port default configuration 8 4 Device description 9 4 1 Interface connection and measurement 9 4 2 Active antenna 9 4 3 Evaluation unit 9 4 3 1 Antenna connector 10 4 3 2 USB 10 4 3 3 UART 10 4 3 4 Time pulse 10 4 3 5 RST button 11 4 3 6 Safe boot button 11 4 3 7 Slide Switch 11 4 3 8 Test Conne...

Page 5: ...r Guide UBX 14002462 R07 Early Production Information Contents Page 5 of 24 8 Board layout 16 9 Schematic 19 10 Troubleshooting 20 11 Common evaluation pitfalls 22 Related documents 23 Revision history 23 Contact 24 ...

Page 6: ...able 1 List of available evaluation kits 1 2 Kit includes Evaluation unit plain PCB board USB cable Active GPS GLONASS Galileo BeiDou antenna with 3 m cable Quick Start card Because of the integrated antennas in the CAM M8Q and CAM M8C modules the standard u blox GNSS EVK aluminum box cannot be used for the EVK M8QCAM and EVK M8CCAM A plastic cap is attached on the top of the antenna module in EVK...

Page 7: ...a extra power supply pin 14 V5_IN 13 GND Normal Operating temperature 40 C to 65 C Table 2 EVK M8QCAM and EVK M8CCAM specifications 2 1 Safety precautions EVK M8QCAM and EVK M8CCAM must be supplied by an external limited power source in compliance with clause 2 5 of the standard IEC 60950 1 In addition to the external limited power source only separated or Safety Extra Low Voltage SELV circuits ar...

Page 8: ... Connect via RS232 Set the slide switch to RS232 2 The device must always have power either via the USB port on the rear or the V5_IN input on the front 3 The EVK M8QCAM or EVK M8CCAM evaluation kit includes a CAM M8Q or CAM M8C concurrent GNSS module with embedded chip antenna Optionally an external GNSS antenna can be connected to the evaluation unit Be sure to place the EVK in a location with u...

Page 9: ... or CAM M8C module is embedded with a chip antenna Additionally an active GPS GLONASS Galileo BeiDou antenna with 3 m cable is included in the EVK M8QCAM or EVK M8CCAM evaluation kit It is possible to connect external antenna signals of various active GPS GLONASS Galileo BeiDou antennas to the EVK M8QCAM M8CCAM evaluation unit through SMA connector The recommended maximum antenna supply current fo...

Page 10: ...ludes an RS232 port for serial communication which is compatible with PC serial ports In addition to the RS232 communication port the time pulse 1 signal is available on the DB9 connector pin 1 or 6 Connect using a straight RS232 serial cable with male and female connectors to the port on your PC The maximum cable length is 3 meters To configure the RS232 port use the CFG_PRT command in the u cent...

Page 11: ...EVK operates only with the USB interface RS232 DB9 is switched off 4 3 8 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 4 shows an example of a po...

Page 12: ... is a RENATA 3 0 V Li MnO battery of the type CR2450 The battery has a rated capacity of 540 mA The battery operating temperature range is 40 C to 85 C In case the built in backup battery runs low or empty after a long storage period purchase the above described battery for replacement CAUTION RISK OF EXPLOSION IF BATTERY IS REPLACED BY AN INCORRECT TYPE DISPOSE OF USED BATTERIES ACCORDING TO THE ...

Page 13: ... see Figure 5 2 Wait 12 minutes to download all of the GNSS orbital data or download all the Aiding Data via the AssistNow Online service 3 Read the voltage and average if necessary on the voltmeter and convert to current 1 mV equals 1 mA 4 Perform the test with good signals and unobstructed sky views to ensure that the receiver can acquire the satellite signals For more details see the circuit in...

Page 14: ... view of the u center evaluation software can be used to do this When enabling the mode using CFG RXM always save the configuration by checking the save configuration box in u center otherwise the configuration will be lost Communications to the evaluation kit must be via the RS232 or the USB The evaluation kit can be supplied with power via the USB connector or via V5_IN at the front side connect...

Page 15: ...EVK M8CAM User Guide UBX 14002462 R07 Early Production Information Block diagram Page 15 of 24 7 Block diagram Figure 6 EVK M8QCAM M8CCAM block diagram ...

Page 16: ...Guide UBX 14002462 R07 Early Production Information Board layout Page 16 of 24 8 Board layout Figure 7 shows the EVK M8QCAM M8CCAM board layout See Table 6 for the component list of the EVB Figure 7 EVB PAM_CAM layout ...

Page 17: ...B RECEPTACLE MICRO B TYPE SMD MOLEX 47346 0001 TID60001597 30 V 1 A J2 CON SMA THT RIGHT ANGLE JACK J3 9 POLE SUBD CONNECTOR FEMALE J4 14PIN 90DEGREE 2 54MM PITCH DISCONNECTABLE CRIMP CONNECTOR 40 85 C J6 SMART ANTENNA MODULES CAM M8Q or CAM M8C 40 85 C L1 IND MURATA LQW15A 0402 8N7 3 0 54A 55 125 C L2 IND MURATA LQW15A 0402 120N 5 0 64A 55 125 C Q1 MBT3906DW1T1G DUAL GENERAL PURPOSE TRANSISTOR 0 ...

Page 18: ...Z 3GHZ SKYWORKS AS179 92 SC70 40 85 C U14 PRECISION RAIL TO RAIL OP AMP LINEAR LT6000 DCB U15 TINY LOGIC UHS INVERTER WITH SCHMITT TRIGGER 0 9 TO 3 6V FAIRCHILD NC7SV14 SC70 U16 TINY LOGIC ULP A 2 INPUT AND GATE 1 45X1 0 6 LEAD MICROPAK 40 85 C U2 U3 U7 U8 U9 TINY LOGIC UHS BUFFER OE_N ACTIVE LOW FAIRCHILD NC7SZ125 SC70 U4 LOW DROPOUT REGULATOR LINEAR LT1962 MS8 3 3V 0 3 A U5 LOW NOISE AMPLIFIER G...

Page 19: ...UBX 14002462 R07 Early Production Information Schematic Page 19 of 24 9 Schematic Figure 8 Schematic EVK 7PAM EVK M8QCAM EVK M8CCAM DNI TRUE in the schematic means Component not installed ...

Page 20: ...en The syndrome is caused when the NMEA 0183 GNSS serial data is misinterpreted as mouse data by the serial port enumerator serenum sys resulting in erratic mouse cursor activity Change the USB RS232 switch to RS232 can help to recover control of the cursor and disable the enumerator setting in the Windows Device Manager Ports COM LPT USB Serial Port COMxx Port Settings Advanced The position is of...

Page 21: ...have serious side effects on the performance of GNSS receivers The solution is to configure GPS week rollover to 1200 as indicated in Figure 9 which corresponds to Jan 2003 Then issue the cold start command before every simulator test to avoid receiver confusion due to the time jumps Also ensure that the RF signal path is switched to the RF connector To do this provide an external DC load to the R...

Page 22: ... deterministic system The satellite constellation changes constantly Atmospheric effects i e dawn and dusk have an impact on signal travel time The position of the GNSS receiver is typically not the same between two tests Comparative tests should therefore be conducted in parallel by using one antenna and a signal splitter statistical tests shall be run for 24 hours Monitor the Carrier To Noise Ra...

Page 23: ...ur homepage Revision history Revision Date Name Status Comments R01 13 Jun 2014 julu Advance Information R02 22 Aug 2014 julu Early Production Information R03 26 Feb 2014 julu Renamed EVK M8CAM to EVK M8QCAM R04 10 Apr 2015 julu Added EVK M8CCAM variant R05 15 Sep 2016 jhak Changed product type numbers with ROM SPG 3 01 and updated relevant information R06 14 Jun 2017 rmak Added information on tim...

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