NimbeLink Skywire NL-SWN-LTE-NRF9160 User Manual Download

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Skywire

Nano Development Kit

User Manual

NimbeLink Corp
Updated: July 2020

PN 1002398 rev 1

Summary of Contents for Skywire NL-SWN-LTE-NRF9160

Page 2: ... Program 11 Default Serial Port Settings 11 Modem Enumeration on the Host PC 11 Test Serial Communication 13 Disable Cellular Functionality 14 Set the Desired SIM Interface 14 Activate Modem One Time Step 15 Configure the PDP Context 16 Enable Cellular Functionality 17 Verify the Network Registration Status 17 Test Signal Strength 19 Common Next Steps 21 Appendix 22 APN Configuration 22 Overview 2...

Page 3: ...s the following critical features and functionality One micro USB connector J2 that provides 5V 500mA power to the board and enables easy communication between the host PC and the modem Two SMA to U FL connectors for cellular and GPS antennas Two 20 pin headers for connection to modem s GPIO pins and other signals 3FF SIM slot that adds support for various other SIM cards and cellular carriers For...

Page 4: ...ish to use a different carrier network a physical SIM card can be inserted into the 3FF SIM card connector slot on the development kit baseboard At this time the AT T SIM card provided in the kit should not be used The Nordic Semiconductor nRF9160 cellular module SiP System in Package has not completed AT T s network certification When the SiP and modem complete the AT T certification this documen...

Page 5: ...NRF9160 Skywire Nano modem with soldered down Verizon LTE M SIM mounting screws and tool NL SWNDK Development Kit baseboard micro USB cable cellular antenna and an AT T SIM card The picture below shows the contents of the development kit when unboxed PN 1002398 rev 1 NimbeLink Corp 2020 All rights reserved 5 ...

Page 6: ...ith the kit a Skywire Nano Development Kit PCB b Skywire Nano Cellular Modem c Mounting Screw s d Hex Key Tool It is also strongly recommended to use a U FL removal tool in order to prevent damage to the modem s U FL connectors when unmating the connectors The following part is a suitable tool for this purpose Hirose P N U FL LP V N 2 2 Before connecting ensure that the Skywire Nano is properly or...

Page 7: ...ard before applying any force b Once the modem is oriented properly press down gently on the top of the modem perpendicular to the surface of the modem 4 Using the provided hex key tool insert a mounting screw into the screw hole on the modem and baseboard Gently tighten the screw until it meets resistance PN 1002398 rev 1 NimbeLink Corp 2020 All rights reserved 7 ...

Page 8: ...onnectors on the modem a Connector J12 on the baseboard should be mated with the LTE antenna connector X1 on the modem b Connector J13 on the baseboard should be mated with the GPS antenna connector X3 on the modem PN 1002398 rev 1 NimbeLink Corp 2020 All rights reserved 8 ...

Page 9: ... J12 on the development kit a The antenna should be positioned such that it is sticking straight up perpendicular to the development kit in order to ensure the best possible signal quality PN 1002398 rev 1 NimbeLink Corp 2020 All rights reserved 9 ...

Page 10: ...s a list of recommended active GPS antennas that are compatible with the modem See Section 4 13 4 at the link below for more details https nimbelink com Documentation Skywire Nano 4G_LTE_Cat_M1_Nordic 1 002347_NL SWN LTE NRF9160_Datasheet pdf 8 Attach the provided USB cable to connector J2 on the development kit and the other end to the host PC This will cause the modem to power on and enumerate o...

Page 11: ... command sudo apt install putty 3 2 Default Serial Port Settings The Skywire Nano requires the following default serial port settings Parameter Value Default Baud Rate 115200 bps Data Bits 8 Parity Bit N Stop Bit s 1 When setting up the connection to the modem in the chosen terminal emulator program make sure that everything is configured to match the default settings 3 3 Modem Enumeration on the ...

Page 12: ...kit should automatically install when the development kit is plugged into the test PC If this is not the case please refer to the following link Download and install the J Link Software and Documentation Pack https www segger com downloads jlink J LinkSoftwareAndDocumentationPack The COM port that is connected to the modem s AT command parser serial port UART1 may vary from PC to PC Using Tera Ter...

Page 13: ...ttings can be updated in Putty by navigating to Connection Serial The serial settings should be as follows Baud Rate 115200 bps Data 8bit Parity none Stop 1bit Flow Control none 3 4 Test Serial Communication In the terminal program type the command AT followed by the Enter key and the terminal should respond with OK Note The modem will output ERROR when a command is entered incorrectly To enable v...

Page 14: ...ions while the modem s soldered down SIM is inactive the modem s cellular functionality should be disabled temporarily Type the following command AT CFUN 4 followed by the Enter key and the modem should respond with OK 3 6 Set the Desired SIM Interface By default the modem uses the soldered down SIM card However users can swap between the soldered down SIM card and the external SIM interface on th...

Page 15: ...ular data plan Alternatively a SIM from a cellular carrier that honors PTCRB certifications can also be used The AT T SIM card that is included with the development kit must not be used as per the guidance in Section 1 4 To activate a new plan for the modem s soldered down SIM the International Mobile Equipment Identity IMEI of the modem and the Integrated Circuit Card Identifier ICCID of the SIM ...

Page 16: ... equipment using Verizon s LTE network will have their APN s automatically pushed to them during the network registration process Therefore setting up a PDP context is not usually required Verizon users should skip the setting of the PDP context and attempt to connect without setting one If for some reason the modem cannot connect with the automatic APN push refer to the AT CGDCONT command below f...

Page 17: ...m to enable its cellular radio and attempt to connect to the network send the following command AT CFUN 1 followed by the Enter key and the modem should respond with OK 3 10 Verify the Network Registration Status To test whether the modem has registered on the network the AT CEREG command can be used To query the current registration status send the following command AT CEREG followed by the Enter...

Page 18: ...ignal quality conditions are too low and the modem is unable to connect Verify that the J12 antenna connector is properly seated in the modem s X1 connector and ensure that the testing area has acceptable signal quality Moving closer to a window or outdoors can help to improve LTE signal quality Section 3 11 also has information on the signal quality AT command that can help to identify low signal...

Page 19: ... LTE modems Typical values are as follows Values of rsrq RSRQ Reference Signal Received Quality 0 RSRQ 19 5 dB 1 19 5 dB RSRQ 19 dB 2 19 dB RSRQ 18 5 dB 32 4 dB RSRQ 3 5 dB 33 3 5 dB RSRQ 3 dB 34 3 dB RSRQ 255 Not known or detectable Values of rsrp RSRP Reference Signal Received Power 0 RSRP 140 dBm 1 140 dBm RSRP 139 dBm 2 139 dBm RSRP 138 dBm 95 46 dBm RSRP 45 dBm 96 45 dBm RSRP 44 97 44 dBm RSR...

Page 20: ...Fair 10 19 15 dB RSRQ 10 dB 51 59 90 dBm RSRP 80 dBm Good 20 34 10 dB 60 97 80 dBm Excellent To query the current signal strength seen by the modem type this command AT CESQ followed by the Enter key and the terminal should respond with CESQ rxlev ber rscp ecno rsrq rsrp Where rsrq rsrp are the RSRP RSRQ values as defined by the modems AT command manual PN 1002398 rev 1 NimbeLink Corp 2020 All rig...

Page 21: ...1_N ordic 1002400_NL SW LTE NRF9160_SocketDialAppNote pdf Firmware Over The Air FOTA Update Procedure Learn how to perform a Firmware Over the Air update on the modem https nimbelink com Documentation Skywire Nano 4G_LTE_Cat_M1_N ordic 1002401_NL SW LTE NRF9160_FOTA Guide pdf NL SWN LTE NRF9160 AT Command Manual Learn about all the available AT commands https nimbelink com Documentation Skywire Na...

Page 22: ...r correct APN configuration details 5 1 2 Common APN s and Their Respective Carriers The table below contains a list of common APNs and their respective carriers It is important to use the APN that corresponds to the proper carrier and the specific IP address configuration Failure to do so will result in failed cellular network connections Cellular Carrier Common APNs Description Verizon NIMBLINK ...

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