FCC ID: 2AAGMNB01Q0 NB01Q

Skywire NB1 Development Kit User Manual NimbeLink Corp Updated: July 2018 PN 30192 rev 8 NimbeLink Corp. 2018. All rights reserved. 1 NimbeLink Corp. 2018. All rights reserved. NimbeLink Corp. provides this documentation in support of its products for the internal use of its current and prospective customers. The publication of this document does not create any other right or license in any party to use any content contained in or referred to in this document and any modification or redistribution of this document is not permitted. While efforts are made to ensure accuracy, typographical and other errors may exist in this document. NimbeLink reserves the right to modify or discontinue its products and to modify this and any other product documentation at any time. All NimbeLink products are sold subject to its published Terms and Conditions, subject to any separate terms agreed with its customers. No warranty of any type is extended by publication of this documentation, including, but not limited to, implied warranties of merchantability, fitness for a particular purpose and non-infringement. NimbeLink is a registered trademark, and Skywire is a registered trademark, of NimbeLink Corp. All trademarks, service marks and similar designations referenced in this document are the property of their respective owners. PN 30192 rev 8 NimbeLink Corp. 2018. All rights reserved. 2 Table of Contents 1. Introduction 1.1 Overview 1.2 Archive of Critical Engineering Sample Notes 1.2.1 Engineering Sample 1.2.2 Modem Firmware 1.2.3 AT Commands 1.2.4 Lower Power Modes 1.2.5 Supported LTE Bands 2. Getting Started 2.1 Kit Contents 2.2 Hardware Setup 2.2.1 SIM Card Installation 2.2.2 Skywire Installation 2.2.3 Jumper Installation 2.2.4 Antenna Installation 2.3 Software Setup 2.3.1 Terminal Program 2.3.2 Baudrate 3. Hardware Verification 3.1 Introduction 3.2 Insert USB Cable 3.3 Apply Power 3.4 Verify COM Port Enumeration 3.5 Connect to the Skywire 3.6 AT Commands 3.7 Verify AT Command Communications 3.8 Enable Command Echo 3.9 Check Firmware Version 3.10 Enable Cellular Functionality 3.11 Verify Auto-Attach 3.12 Verify Cellular Signal Strength 5 5 5 5 5 5 5 5 6 6 6 6 8 9 9 10 10 11 11 11 11 12 12 12 14 14 14 14 15 15 15 PN 30192 rev 8 NimbeLink Corp. 2018. All rights reserved. 3 3.13 Verify Network Registration 4. Next Steps 5. Troubleshooting 5.1 Introduction 5.2 Communications with the Skywire 5.3 Serial Communications on macOS 5.4 Network Registration 16 17 18 18 18 18 19 PN 30192 rev 8 NimbeLink Corp. 2018. All rights reserved. 4 1. Introduction 1.1 Overview This document is the User Manual for the NL-M1DK-ES, NL-SW-LTE-SVZM20-

ES, and NL-SW-LTE-SVZM20 family of Skywire modems. The procedure outlined in this guide walks through installing the Skywire modem, setting up your workstation, issuing basic commands.. 1.2 Archive of Critical Engineering Sample Notes 1.2.1 Engineering Sample The NL-M1DK-ES are Engineering Sample products. This means that there is some functionality not enabled yet, and there will be numerous software and firmware changed and updates in the near future as these features mature. 1.2.2 Modem Firmware The firmware in the modem may have some limited functionality, but you will need to update the firmware as part of the out-of-the-box experience. 1.2.3 AT Commands Not all AT commands listed in the AT Commands Manual are enabled. The associated Application Notes will reference commands and sequences that are available at the time of writing and known to be working. If you receive an ERROR response when trying to use one of the commands not listed in an Application Note, you can expect that the implementation is not complete for that feature. 1.2.4 Lower Power Modes We do not advise performing any advanced power testing at this time. Low power modes (and power-save modes) are not available in current firmware so results are not representative of the products true capabilities yet. 1.2.5 Supported LTE Bands LTE Band 111 and B222 are the 2 bands supported in this module version. Band 111: 6 MHz of 3GPP Band 29, which is an SDL band, paired with 5 MHz of PCS-H block. Band 222: 25 MHz of downlink portion of 3GPP Band 70, paired with 5 MHz of PCS-H block

. PN 30192 rev 8 NimbeLink Corp. 2018. All rights reserved. 5 2. Getting Started 2.1 Kit Contents The NL-NB1DK-ES kit includes the following hardware:

1. NL-NB1DK-ES - Skywire 4G LTE CAT NB1 Cellular Modem Development Kit with jumpers installed 2. NL-SW-LTE-SVZM20-ES - Skywire 4G LTE CAT NB1 Cellular Modem 3. CUI 5V Power Supply 4. Taoglas Antenna 5. USB to mini-USB Cable 2.2 Hardware Setup 2.2.1 SIM Card Installation The SIM card included in your kit includes a tri-cut carrier and adapter for different sizes. The Skywire family of modems use the Micro-SIM (3FF size form factor), which is the SIM card size outlined in red in the below picture:

PN 30192 rev 8 NimbeLink Corp. 2018. All rights reserved. 6 Carefully snap out the 3FF SIM card size from the SIM card carrier, and insert it into your Skywire modem. The pads on the SIM card should face the pins on the SIM cage, and the keyed corner will go in as shown below:

Insert the SIM card into the Skywire:

PN 30192 rev 8 NimbeLink Corp. 2018. All rights reserved. 7 2.2.2 Skywire Installation Install the Skywire as shown below. The small circles on the NL-NB1DK-ES shows the proper orientation of the U.FL connectors on the Skywire:

Please verify that the installation of the Skywire is correct. If it is installed 180 degrees from the proper orientation, or if the Skywire is installed one pin off, it will damage the Skywire modem when power is applied. This voids the warranty of the Skywire and the NL-M1DK-ES. Attach the antenna cables to the Skywire. Note: when removing antenna cables from the Skywire, use a U.FL removal tool. Here is a picture of the fully-installed Skywire:

PN 30192 rev 8 NimbeLink Corp. 2018. All rights reserved. 8 2.2.3 Jumper Installation The NL-NB1DK-ES has the capability to connect to your workstation via a USB-Serial connection, or to different microcontroller platforms. Your NL-M1DK-ES is setup from the factory for the USB-Serial connection. However, if a jumper was knocked off during shipment, here is a diagram for the proper jumper settings:

2.2.4 Antenna Installation Install the antenna to SMA connector J18 by screwing on the antenna. Make note not to cross-thread the antenna:

PN 30192 rev 8 NimbeLink Corp. 2018. All rights reserved. 9 Bend the antenna connector so it is pointing vertically. Below is a side view of the installed antenna. 2.3 Software Setup 2.3.1 Terminal Program You will need a Terminal program to communicate with the Skywire. For Windows, we recommend TeraTerm or PuTTY:

PN 30192 rev 8 NimbeLink Corp. 2018. All rights reserved. 10 TeraTerm - https://ttssh2.osdn.jp/index.html.en PuTTY - http://www.putty.org/

For Unix-based systems (macOS, Linux), we recommend picocom or minicom. Note: Additional setup may be necessary for macOS. Please consult Section 7.3 before continuing. 2.3.2 Baudrate The default baudrate of the NL-SW-LTE-SVZM20-ES is 921600. Please make sure to change the settings of your terminal program to reflect this. 3. Hardware Verification 3.1 Introduction Now that the Skywire is installed in the NL-NB1DK-ES, it is time to verify that the Skywire can connect to the network. This example uses TeraTerm on Windows 7, however the process is similar for your platform. Generally,

- Setup your terminal program to use baudrate 921600 and connect to your Skywire port Issue the listed AT commands to verify communications and network connectivity

-

3.2 Insert USB Cable Insert the USB cable to port J20 on the NL-M1DK-ES:

Insert the other end of the USB cable to your workstation. PN 30192 rev 8 NimbeLink Corp. 2018. All rights reserved. 11 3.3 Apply Power Insert the included 5V power adapter into the NL-NB1DK-ES:

Plug the power supply into a power outlet. 3.4 Verify COM Port Enumeration Open Windows Device Manager, and verify that the FTDI drivers installed properly. There will be two new COM ports on your PC. You will use the first COM port for AT commands. The second COM port is used for GPS data when that functionality is available. Note the first COM port number. For this guide, the ports enumerate as COM44 and COM45:

If your devices do not install, you may need to download drivers from FTDI. Please find them here:

http://www.ftdichip.com/Drivers/VCP.htm 3.5 Connect to the Skywire Open TeraTerm, and close the initial connection window that appears: this window doesn't allow us to change the baud rate. Go to:

Setup > Serial Port PN 30192 rev 8 NimbeLink Corp. 2018. All rights reserved. 12 and in the Baud Rate field either type in 921600 or use the dropdown to select 921600. All other settings should remain at their defaults. For the Port, use the dropdown to select your COM port if it isn't selected already. COM44 has been selected for this example, corresponding to the port listed in Section 4.4:

Once you have the correct settings, click "OK" to establish the connection to your Skywire. PN 30192 rev 8 NimbeLink Corp. 2018. All rights reserved. 13 3.6 AT Commands The Skywire family of embedded modems communicates using AT commands. AT commands are issued by typing the command, pressing the Enter key on your keyboard, and observing the response. 3.7 Verify AT Command Communications Type the following command:

AT followed by the Enter Key, and the terminal should respond with:

OK Please note: the default behavior of the NL-SW-LTE-SVZM20-ES is to not echo the command back, so you will not see AT as you type it, only the OK response if Enter key is pressed. 3.8 Enable Command Echo To enable the command echo, type the following command:

ATE1 followed by the Enter Key, and the terminal should respond with:

OK You will now see the commands as they are typed. This functionality will default back to off with a power cycle. You can also disable the command echo by typing the following command:

ATE0 followed by the Enter Key, and the terminal should respond with:

OK 3.9 Check Firmware Version It is beneficial to make sure that you always have the latest firmware to ensure stability and feature set. To check your firmware, type the following command:

ATI1 followed by the Enter Key, and the terminal should respond with:

UE6.0.0.0 LR6.0.0.0-xxxxx OK PN 30192 rev 8 NimbeLink Corp. 2018. All rights reserved. 14 3.10 Enable Cellular Functionality To conserve power, by default cellular functionality is disabled. To enable cellular functionality, type the following command:

AT+CFUN=1 followed by the Enter Key, and the terminal should respond with:

OK This functionality will reset when rebooted. Therefore, this command will need to be sent at each power-on. 3.11 Verify Auto-Attach Depending on your settings, the Skywire may not automatically try to register on the network. To enable this functionality, type the following command:

AT^AUTOATT=1 followed by the Enter Key, and the terminal should respond with:

OK This command is saved in non-volatile memory (NVM), and therefore only needs to be issued once. However, if you would like to verify that this command is set, you can type the following command:

AT^AUTOATT?

followed by the Enter Key, and the terminal should respond with:

^AUTOATT: x OK where x is either 0 for disabled or 1 for enabled. 3.12 Verify Cellular Signal Strength To verify the signal strength, type the following command:

AT+CSQ followed by the Enter Key, and the terminal should respond with:

+CSQ: xx,yy OK where xx and yy will be numbers corresponding to the signal strength and error rate, respectively. Please see the below table to convert these numbers to real-world values:

[table from AT commands manual]

PN 30192 rev 8 NimbeLink Corp. 2018. All rights reserved. 15 Note: AT+CSQ may respond with:

+CSQ: 99,99 as the Skywire is registering on the network. Poll the command until it returns a valid number, indicating that the Skywire is receiving a valid cellular signal. 3.13 Verify Network Registration Once you have a cellular signal, you can verify that you are registered on the network. Type the following command:

AT+CEREG?

followed by the Enter Key, and the terminal will respond with:

+CEREG: 2,x,y,z OK where x is your registration status, and y and z are further network details. Poll this command until it returns:

+CEREG: 2,1,y,z A value of 1 means that your Skywire is registered on the network. PN 30192 rev 8 NimbeLink Corp. 2018. All rights reserved. 16 4. Next Steps Now that you have verified that you can communicate with the Skywire modem, and that it's registered on the network, you are ready to start building your cellular-

connected device. Most users will be using the PPP functionality, or perform raw socket dials. Here are application notes to get you started:

CAT M1 PPP on BeagleBone Black -

http://www.nimbelink.com/Documentation/Skywire/4G_LTE_Cat_M1/30272_NL-SW-

LTE-SVZM21_PPP-on-CATM1_BBB.pdf CAT M1 PPP on Raspberry Pi -

http://www.nimbelink.com/Documentation/Skywire/4G_LTE_Cat_M1/30273_NL-SW-

LTE-SVZM21_PPP-on-CATM1_RPi.pdf CAT M1 Socket Dials -

http://www.nimbelink.com/Documentation/Skywire/4G_LTE_Cat_M1/1001412_NL-SW-

LTE-SVZM_SocketDialAppNote.pdf PN 30192 rev 8 NimbeLink Corp. 2018. All rights reserved. 17 5. Troubleshooting 5.1 Introduction This section covers troubleshooting steps if the above procedures do not work for you. 5.2 Communications with the Skywire If you are unable to communicate with your Skywire Modem, make sure that you have the jumpers setup correctly for your application according to Section 2.2.3, and the baudrate set to 921600 according to Sections 2.3.2 and 4.5. In addition, make sure you are communicating with the correct COM port according to Section 4.5. 5.3 Serial Communications on macOS If you are using macOS and are unable to communicate with the Skywire Modem, you may need to manually change the baud rate. By default, macOS does not support baud rates higher than 230400. There are two ways around this:

-b using example, picocom 1. Using your favorite terminal program, open the serial port at a lower baudrate. picocom:

For

$

In another

$

Go back to your first terminal window and you can use the device now. Note: you may need to use sudo for the stty command. terminal window, change the baudrate on that serial port:

device 115200 device 921600

[your

[your name]

name]

stty

-f 2. Check if your favorite terminal program has implemented this change. For example, compiling picocom from source would implement this fix:

https://github.com/npat-

efault/picocom/commit/74e0245fb001889e168755dabf6badac0b6967d3 Additionally, you may get different listings or multiple listing for serial devices. For example, you may get listings for:

$ /dev/cu.[your device name]A

$ /dev/cu.[your device name]B

$ /dev/tty.[your device name]A

$ /dev/tty.[your device name]B We have found that using the /dev/cu.[your device name] works, and have verified Step 1 working on the /dev/cu.[your device name] device. You may get an error trying to use /dev/tty[your device name]. PN 30192 rev 8 NimbeLink Corp. 2018. All rights reserved. 18 Using higher baud rates in Windows and Linux does not appear to be an issue as of the publication of this document. 5.4 Network Registration If your Skywire is not registering on the network, ensure that you have the antenna connected to the correct port on your Skywire and NB1DK according to Section 2.2.4. In addition, please make sure that you are setup to automatically register on the network by checking the auto-attach settings in Section 4.12. Make sure you are getting an acceptable signal strength according to Section 4.13. Finally, make sure that you typed the APN correctly according to Section 4.10. If the Skywire does not automatically register on the network, check the status of the attachment by typing the following command:

AT+CGATT?

followed by the Enter Key, and you should see:

+CGATT: x OK where x is either 0 (not attached) or 1 (attached). If the result is 0, type the command:

AT+CGATT=1 followed by the Enter Key, and the terminal should respond with:

OK Return to Section 4.14 and continue from there. PN 30192 rev 8 NimbeLink Corp. 2018. All rights reserved. 19

Federal Communication Commission Interference Statement This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one of the following measures:

Reorient or relocate the receiving antenna. Increase the separation between the equipment and receiver. Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. Consult the dealer or an experienced radio/TV technician for help. FCC Caution:

Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate this equipment. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter. Radiation Exposure Statement:

This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm between the radiator & your body. This device is intended only for OEM integrators under the following conditions:

1) The antenna must be installed such that 20 cm is maintained between the antenna and users, and 2) The transmitter module may not be co-located with any other transmitter or antenna. As long as 2 conditions above are met, further transmitter test will not be required. However, the OEM integrator is still responsible for testing their end-product for any additional compliance requirements required with this module installed IMPORTANT NOTE: In the event that these conditions can not be met (for example certain laptop configurations or co-location with another transmitter), then the FCC authorization is no longer considered valid and the FCC ID can not be used on the final product. In these circumstances, the OEM integrator will be responsible for re-evaluating the end product (including the transmitter) and obtaining a separate FCC authorization. End Product Labeling The product can be kept as far as possible from the user body or set the device to lower output power if such function is available. The final end product must be labeled in a visible area with the following: Contains FCC ID: 2AAGMNB01Q0. The grantee's FCC ID can be used only when all FCC compliance requirements are met. Manual Information To the End User The OEM integrator has to be aware not to provide information to the end user regarding how to install or remove this RF module in the users manual of the end product which integrates this module. The end user manual shall include all required regulatory information/warning as show in this manual.