Quectel NB-IoT Module Series User manual

BC92-TE-B User Guide
NB-IoT Module Series
Rev. BC92-TE-B_User_Guide_V1.0
Date: 2020-05-27
Status: Released
www.quectel.com

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Building 5, Shanghai Business Park Phase III (Area B), No.1016 Tianlin Road, Minhang District, Shanghai
200233, China
Tel: [phone]
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QUECTEL OFFERS THE INFORMATION AS A SERVICE TO ITS CUSTOMERS. THE INFORMATION
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Copyright © Quectel Wireless Solutions Co., Ltd.2020. All rights reserved.

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About the Document
Revision History
Version
Date
Author
Description
1.0
2020-05-27
Clifton HE
Initial

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Contents
About the Document...................................................................................................................................2
Contents.......................................................................................................................................................3
Table Index...................................................................................................................................................4
Figure Index.................................................................................................................................................5
1Introduction..........................................................................................................................................6
1.1. Safety Information......................................................................................................................7
2Product Concept..................................................................................................................................8
2.1. Key Features .............................................................................................................................8
2.2. Functional Diagram .................................................................................................................10
2.3. Interface Distribution Diagram.................................................................................................11
2.4. Arduino Interface Definition.....................................................................................................13
3Operation Procedures.......................................................................................................................14
3.1. Operation Procedure with Single Board..................................................................................15
3.1.1. Interface Diagram...........................................................................................................15
3.1.2. Operation Procedure of Using Single Board .................................................................16
3.2. Operation Procedure with Multi Boards ..................................................................................17
3.2.1. Interface and Modification Diagrams.............................................................................17
3.2.2. Operation Procedure of Using Multi Boards..................................................................19
3.2.3. Description of Pin Connection........................................................................................19
4Electrical Performance and Reliability............................................................................................21
4.1. Absolute Maximum Ratings.....................................................................................................21
4.2. Operation and Storage Temperatures.....................................................................................21
5Mechanical Dimensions....................................................................................................................23
5.1. Mechanical Dimensions of BC92-TE-B...................................................................................23
5.2. Top and Bottom Views of BC92-TE-B.....................................................................................24
6BC92-TE-B Kit and Accessories.......................................................................................................26
6.1. BC92-TE-B Kit.........................................................................................................................26
6.2. BC92-TE-B Accessories..........................................................................................................27
7Appendix A References.....................................................................................................................28

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Table Index
Table 1: Key Features of BC92-TE-B........................................................................................................... 8
Table 2: Interfaces of BC92-TE-B...............................................................................................................11
Table 3: Pin Connection between BC92-TE-B and STM32-L476RG MCU............................................... 19
Table 4: Absolute Maximum Ratings..........................................................................................................21
Table 5: Operating Temperatures...............................................................................................................21
Table 6: Accessory List...............................................................................................................................27
Table 7: Related Document........................................................................................................................28
Table 8: Terms and Abbreviations.............................................................................................................. 28

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Figure Index
Figure 1: Functional Diagram of BC92-TE-B.............................................................................................10
Figure 2: Interface Distribution Diagram of BC92-TE-B .............................................................................11
Figure 3:Arduino Interface Definition......................................................................................................... 13
Figure 4: Interface Diagram of Using BC92-TE-B Alone........................................................................... 15
Figure 5: UART Ports Displayed on PC.....................................................................................................16
Figure 6: Interface Diagram of Using Multi Boards.................................................................................... 17
Figure 7: STM32-Nucleo Modification Diagram (Top View)....................................................................... 18
Figure 8: STM32-Nucleo Modification Diagram (Bottom View).................................................................18
Figure 9: ST-LINK Interface Displayed on PC...........................................................................................19
Figure 10: Pin Connection between BC92-TE-B and STM32-L476RG MCU...........................................20
Figure 11: Dimensions of BC92-TE-B (Top View)...................................................................................... 23
Figure 12: Top View of the BC92-TE-B......................................................................................................24
Figure 13: Bottom View of the BC92-TE-B................................................................................................ 25
Figure 14: BC92-TE-B Kit .......................................................................................................................... 26
Figure 15: BC92-TE-B and Accessories....................................................................................................27

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1Introduction
In order to help customers to develop applications with Quectel BC92 module, Quectel offers
corresponding TE-B evaluation board to test the module. This document helps customers quickly
understand BC92-TE-B interface specifications, electrical and mechanical details and how to use it.

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1.1. Safety Information
The following safety precautions must be observed during all phases of the operation, such as usage,
service or repair of any cellular terminal or mobile incorporating BC92 module. Manufacturers of the
cellular terminal should notify users and operating personnel of the following safety information by
incorporating these guidelines into all manuals of the product. Otherwise, Quectel assumes no liability for
the customers’ failure to comply with these precautions.
Full attention must be paid to driving at all times in order to reduce the risk of an
accident. Using a mobile while driving (even with a handsfree kit) causes
distraction and can lead to an accident. Please comply with laws and regulations
restricting the use of wireless devices while driving.
Switch off the cellular terminal or mobile before boarding an aircraft. The operation
of wireless appliances in an aircraft is forbidden to prevent interference with
communication systems. If there is an Airplane Mode, it should be enabled prior to
boarding an aircraft. Please consult the airline staff for more restrictions on the use
of wireless devices on an aircraft.
Wireless devices may cause interference on sensitive medical equipment, so
please be aware of the restrictions on the use of wireless devices when in
hospitals, clinics or other healthcare facilities.
Cellular terminals or mobiles operating over radio signals and cellular network
cannot be guaranteed to connect in all possible conditions (for example, with
unpaid bills or with an invalid (U)SIM card). When emergent help is needed in such
conditions, please remember using emergency call. In order to make or receive a
call, the cellular terminal or mobile must be switched on in a service area with
adequate cellular signal strength.
The cellular terminal or mobile contains a transmitter and receiver. When it is ON, it
receives and transmits radio frequency signals. RF interference can occur if it is
used close to TV set, radio, computer or other electric equipment.
In locations with potentially explosive atmospheres, obey all posted signs to turn
off wireless devices such as mobile phone or other cellular terminals. Areas with
potentially explosive atmospheres include fuelling areas, below decks on boats,
fuel or chemical transfer or storage facilities, areas where the air contains
chemicals or particles such as grain, dust or metal powders.

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2Product Concept
BC92-TE-B is a LPWA/GSM/GPRS evaluation board which supports Arduino interface. Designed in
100.0 mm ×95.0 mm ×1.6 mm form factor, BC92-TE-B can be used either alone or in conjunction with
STM32 Nucleo-64 development board, in order to develop and debug applications for communication
with mobile network operators’ infrastructural equipment through the NB-IoT radio protocol (3GPP Rel-13
and 3GPP Rel-14) or the GSM/GPRS radio protocol.
2.1. Key Features
The following table describes the detailed features of BC92-TE-B.
Table 1: Key Features of BC92-TE-B
Feature
Details
Power Supply
USB interface:
Supply voltage: 4.75–5.25 V;
Typical supply voltage: 5.0 V
Arduino interface:
Supply voltage: 4.75–5.25 V;
Typical supply voltage: 5.0 V
Power adapter interface:
Supply voltage: 4.75–5.25 V;
Typical supply voltage: 5.0 V
Transmitting Power
NB-IoT:
23 dBm ±2 dB
GSM/GPRS:
⚫Class 4 (2 W): GSM850 and EGSM900
⚫Class 1 (1 W): DCS1800 and PCS1900
Temperature Range
Operation temperature range: -25 °C to +75 °C 1)
Extended temperature range: -40 °C to +85 °C 2)
Storage temperature range: -40 °C to +90 °C
USIM Interface
Support 1.8/3.0 V external USIM card
UART Switch
Used to switch the communication object of BC92 main UART port

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1. 1) Within operation temperature range, the module is 3GPP compliant.
2. 2) Within extended temperature range, the module remains the ability to establish and maintain
functions such as SMS and data transmission, without any unrecoverable malfunction. Radio
spectrum and radio network will not be influenced, while one or more specifications, such as Pout,
may undergo a reduction in value, exceeding the specified tolerances of 3GPP. When the
temperature returns to the normal operating temperature level, the module will meet 3GPP
specifications again.
3. The peak current of the GSM part of the module reaches 1.6 A. When the GSM part works, power
should be supplied with a power adapter, of which power supply capacity should be no less than 2 A.
4. “*” means under development.
USB Interfaces
Support two UART ports
Main port (USB Serial Converter A):
⚫Used for AT command communication and data transmission, the
maximum baud rate is 57600 bps and the default baud rate is 9600 bps.
⚫When the module is communicating with MCU, please keep USB Serial
Converter A unconnected.
Debug port (USB Serial Converter B):
⚫Used for software debugging, firmware upgrading and logging.
⚫The baud rate is 921600 bps.
Arduino Interface
Used for connection with STM32 Nucleo-64 development board
RESET Button
Used to reset BC92 module
PWRKEY Button
Used to power on BC92 module
PSM_EINT Button
Used to wake up BC92 module from Deep Sleep
Physical Characteristics
Size: (100.0 ±0.15) mm ×(95.0 ±0.15) mm ×(1.6 ±0 .2) mm
Firmware Upgrade
Firmware upgrade via debug port or DFOTA
Antenna Interface
Connected to antenna pad with 50 Ωimpedance control
SMS*
Text and PDU modes
SMS storage: (U)SIM card
NOTES

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2.2. Functional Diagram
The following figure shows a block diagram of BC92-TE-B.
BC92
U101
Micro USB
J306
USB-UART
Bridge
U301
Switch
J304
J310
LDO U201
USIM_NB/2G
J401
RF
J301
J309
Arduino
LDO U202
U302/U303
Voltage-level
Translator
LDO U203
USIM_2G
J402
DC JACK
Switch
S201
Figure 1: Functional Diagram of BC92-TE-B

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2.3. Interface Distribution Diagram
The following figure shows an interface distribution diagram of BC92-TE-B.
S201
J204
J402
J109J106
J105 J311J309
J304
J107
J310J307
S103S102S101
J203J501
J202 J102
J401
J108
J306
J301
J103
D101
D208
J104
Figure 2: Interface Distribution Diagram of BC92-TE-B
The table below shows the description of BC92-TE-B interfaces.
Table 2: Interfaces of BC92-TE-B
Interface
Designator
Description
Power Supply
J306
Power supply for USB interface
J204
Power supply for Power Adapter interface

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J309
Power supply for Arduino interface
USB-UART Interface
J306
Support two UART ports
USIM Card Interface
J401, J402
Micro USIM card connector
Arduino Interface
J307, J309, J310, J311
Standard Arduino interface
RFAntenna Interface
J301
RF SMA connector
Power Supply Switch
S201
Used for on-off control of power supply
PWRKEY Button
S101
Used to turn on BC92 module
RESET Button
S102
Used to reset BC92 module
PSM_EINT Button
S103
Used to wake up BC92 from Deep Sleep
UART Switch
J304
Used to switch communication objects of BC92
(main port: “BC92 TO USB” or “BC92 TO MCU”)
Power Indicator
D208
Used to indicate the power on/off status
Network Status Indicator
D101
Used to BC92 Network Status Indicator
Test Points
J102, J103, J104, J105,
J106, J107, J108, J109,
J202, J203, J501
Used to test the basic functionalities of BC92
module

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2.4. Arduino Interface Definition
The following figure shows the Arduino interface definition of BC92-TE-B.
J311J309
J310J307
Figure 3: Arduino Interface Definition
hy

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3Operation Procedures
This chapter mainly illustrates the operation procedures of BC92-TE-B. BC92-TE-B can be used alone to
upgrade and debug NB-IoT/GSM/GPRS applications. Meanwhile, it can also be used in conjunction with
an STM32 Nucleo-64 development board via Arduino interface to develop NB-IoT applications based on
STM32. The following part describes the two approaches in detail.

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3.1. Operation Procedure with Single Board
This section elaborates the interface distribution diagram and operation procedures of using the
BC92-TE-B alone.
3.1.1. Interface Diagram
S201
J204
J402
J109J106
J105
J304
J107
S103S102S101
J203
J501
J202 J102
J401
J108
J306
J301
J103
J101
Figure 4: Interface Diagram of Using BC92-TE-B Alone

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3.1.2. Operation Procedure of Using Single Board
1. Install USB-UART driver, which can be downloaded from the following address:
https://www.ftdichip.com/Drivers/VCP.htm;
2. Insert Micro USIM card (NB-IoT/GSM card) into J401, or insert Micro USIM card (GSM card) into
J402;
3. Connect a rod antenna with SMAconnector on J301;
4. Switch the UART_SWITCH J304 to “MAIN UART TO USB” state;
5. Connect the J306 (USB Interface) with PC via Micro USB cable, switch S201 to “ON”. After
BC92-TE-B is turned on, UART port information will be shown in the “Device Manager”of PC, as
manifested in the following figure. “USB Serial Port (COM19)”(corresponding to “USB Serial
Converter A”) is connected to the main port of BC92 and can be used for AT command
communication and data transmission. “USB Serial Port (COM20)”(corresponding to “USB Serial
Converter B”) is connected to the debug port of BC92 and can be used for debugging, debug log
output and firmware upgrade. For details of port configuration, please refer to Quectel_
BC92_Hardware_Design.
Figure 5: UART Ports Displayed on PC

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1. In this process, S102 can be used to reset the BC92 module. S103 can be used to wake up BC92
from Deep Sleep.
2. If the GSM network is applied, power should be supplied by a power adapter, of which power supply
capacity should be no less than 2 A.
3.2. Operation Procedure with Multi Boards
This section elaborates the operation procedure of using BC92-TE-B in conjunction with an STM32
Nucleo-64 development board.
3.2.1. Interface and Modification Diagrams
S201
J204
J402
J109J106
J105 J311J309
J304
J107
J310J307
S103S102S101
J203J501
J202 J102
J401
J108
J306
J301
J103
D101
D208
J104
Figure 6: Interface Diagram of Using Multi Boards
NOTES

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Figure 7: STM32-Nucleo Modification Diagram (Top View)
Figure 8: STM32-Nucleo Modification Diagram (Bottom View)
SB62
SB13 SB14
SB63
CN6
CN5
CN8
CN9
CN1
CN2
2J2
03
JP6
JP5

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3.2.2. Operation Procedure of Using Multi Boards
1. Install driver for STM32-Nucleo board, which can be downloaded from the following address:
http://www.st.com/content/st_com/en/products/evaluation-tools/product-evaluation-tools/mcu-eval-to
ols/stm32-mcu-eval-tools/stm32-mcu-nucleo/nucleo-l476rg.html;
2. Install USB-UART driver, which can be downloaded from the following address:
https://www.ftdichip.com/Drivers/VCP.htm;
3. Remove 0 Ωresistors of SB13 and SB14 with soldering iron, and then solder them onto SB62 and
SB63 respectively;
4. Short-circuit pin 1 and pin 2 of CN2, pin 3 and pin 4 of CN2, pin 1 and pin 2 of JP5 and pin 1 and pin 2
of JP6;
5. Insert Micro USIM card (NB-IoT/GSM card) into J401, or insert Micro USIM card (GSM card) into
J402;
6. Connect rod antenna with SMAconnector on J301;
7. Switch UART_SWITCH J304 to “MAIN UART TO MCU” state;
8. Connect Arduino interface to STM32-Nucleo board, and connect J307, J309, J311 and J310 of
BC92-TE-B to CN5, CN6, CN8 and CN9 respectively;
9. Connect CN1 of STM32-Nucleo board with PC via Mini USB cable, and switch S201 to “ON”. After
the module is powered on, device information will be shown in the “Device Manager”on PC.
Figure 9: ST-LINK Interface Displayed on PC
3.2.3. Description of Pin Connection
The table below shows the pin connection between BC92-TE-B and STM32-L476RG MCU.
Table 3: Pin Connection between BC92-TE-B and STM32-L476RG MCU
No.
MCU (Morpho)
Arduino
BC92-TE-B
Remark
1
PA2
D1
CN9-2
UART_MCU_TX
Connect to RX of main
UART
2
PA3
D0
CN9-1
UART_MCU_RX
Connect to TX of main
UART