Quectel BC95-GR-TE-B User manual

BC95-GR-TE-B
User Guide
NB-IoT Module Series
Version: 1.0
Date: 2020-11-17
Status: Released
www.quectel.com

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Copyright
The information contained here is proprietary technical information of Quectel wireless solutions co., ltd.
Transmitting, reproducing, disseminating and editing this document as well as using the content without
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the event of a patent grant or registration of a utility model or design.
Copyright © Quectel Wireless Solutions Co., Ltd. 2020. All rights reserved.

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About the Document
Revision History
Version
Date
Author
Description
-
2020-11-10
Glenn GE/
Jerry WANG
Creation of the document
1.0
2020-11-17
Glenn GE/
Jerry WANG
First official release

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Contents
About the Document...................................................................................................................................3
Contents.......................................................................................................................................................4
Table Index...................................................................................................................................................5
Figure Index.................................................................................................................................................6
1Introduction..........................................................................................................................................7
1.1. Safety Information......................................................................................................................8
2Product Concept..................................................................................................................................9
2.1. Key Features .............................................................................................................................9
2.2. Functional Diagram.................................................................................................................. 11
2.3. Interface Distribution Diagram.................................................................................................12
2.4. Arduino Interface Definition.....................................................................................................14
3Operation Procedures.......................................................................................................................15
3.1. Operation Procedures with Single Board................................................................................15
3.1.1. Interface Diagram...........................................................................................................15
3.1.2. Operation Procedures....................................................................................................16
3.2. Operation Procedures with Multi-boards.................................................................................17
3.2.1. Interface Diagram...........................................................................................................17
3.2.2. Operation Procedures....................................................................................................19
3.2.3. Description of Pin Connection........................................................................................19
4Electrical Performance & Reliability................................................................................................21
4.1. Absolute Maximum Ratings.....................................................................................................21
4.2. Operating and Storage Temperatures.....................................................................................21
5Mechanical Dimensions....................................................................................................................23
5.1. Mechanical Dimensions of BC95-GR-TE-B............................................................................23
5.2. Top and Bottom Views of BC95-GR-TE-B...............................................................................24
6BC95-GR-TE-B Kit and Accessories................................................................................................25
6.1. BC95-GR-TE-B Kit...................................................................................................................25
6.2. BC95-GR-TE-B Kit Accessories..............................................................................................26
7Appendix References........................................................................................................................27

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Table Index
Table 1: Key Features of BC95-GR-TE-B.................................................................................................... 9
Table 2: Interfaces of BC95-GR-TE-B........................................................................................................12
Table 3: Pin Connection Between BC95-GR-TE-B and STM32-L476RG MCU........................................19
Table 4: Absolute Maximum Ratings..........................................................................................................21
Table 5: Operating and Storage Temperatures..........................................................................................21
Table 6: Accessories List............................................................................................................................26
Table 7: Related Document........................................................................................................................27
Table 8: Terms and Abbreviations..............................................................................................................27

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Figure Index
Figure 1: Functional Diagram of BC95-GR-TE-B .......................................................................................11
Figure 2: Interface Distribution Diagram of BC95-GR-TE-B......................................................................12
Figure 3: Arduino Interface Definition.........................................................................................................14
Figure 4: Interface Diagram of Using BC95-GR-TE-BAlone.....................................................................15
Figure 5: UART Ports Displayed on PC.....................................................................................................16
Figure 6: Interface Diagram of Using Multi-boards....................................................................................17
Figure 7: STM32 Nucleo-64 Interface Diagram (Top View).......................................................................18
Figure 8: STM32 Nucleo-64 Modification Diagram (Bottom View)............................................................18
Figure 9: ST-LINK Interface Displayed on PC...........................................................................................19
Figure 10: Pin Connection Between BC95-GR-TE-B and STM32-L476RG MCU....................................20
Figure 11: Dimensions of BC95-GR-TE-B (Top View)...............................................................................23
Figure 12: Top View of BC95-GR-TE-B.....................................................................................................24
Figure 13: Bottom View of BC95-GR-TE-B................................................................................................24
Figure 14: BC95-GR-TE-B Kit Assembly...................................................................................................25
Figure 15: BC95-GR-TE-B and Accessories .............................................................................................26

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1Introduction
To help you develop applications with Quectel BC95-GR module conveniently, Quectel supplies a
corresponding development board (BC95-GR-TE-B) to test the module. This document helps you quickly
understand BC95-GR-TE-B interface specifications, electrical and mechanical details and know how to
use it.

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1.1. Safety Information
The following safety precautions must be observed during all phases of operation, such as usage, service
or repair of any cellular terminal or mobile incorporating the 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 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 signal and cellular network
cannot be guaranteed to connect in certain conditions, such as when the mobile bill
is unpaid or the (U)SIM card is invalid. When emergency help is needed in such
conditions, use emergency call if the device supports it. 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. In an emergency, the device with emergency call
function cannot be used as the only contact method considering network
connection cannot be guaranteed under all circumstances.
The cellular terminal or mobile contains a transceiver. When it is ON, it receives
and transmits radio frequency signals. RF interference can occur if it is used close
to TV sets, radios, computers or other electric equipment.
In locations with explosive or potentially explosive atmospheres, obey all posted
signs and turn off wireless devices such as mobile phone or other cellular
terminals. Areas with explosive or potentially explosive atmospheres include
fuelling areas, below decks on boats, fuel or chemical transfer or storage facilities,
and areas where the air contains chemicals or particles such as grain, dust or
metal powders.

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2Product Concept
BC95-GR-TE-B is an NB-IoT development board which supports Arduino interfaces. Designed in
70.0 mm × 74.0 mm × 1.6 mm form factor, BC95-GR-TE-B can be used to develop and debug
applications which communicate with mobile network operators’ infrastructure equipment through NB-IoT
radio protocols (3GPP Rel-13 and Rel-14).
2.1. Key Features
Table 1: Key Features of BC95-GR-TE-B
Features
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
External power supply interface:
Supply voltage: 5.0 V
Transmitting Power
23 dBm ±2 dB
Temperature Range
⚫Operating temperature: -25 °C to +75 °C 1)
⚫Extended temperature: -40 °C to +85 °C 2)
⚫Storage temperature: -40 °C to +90 °C
USIM Interface
Supports 1.8/3.0 V external USIM card
UART Switch
Switches communication objects of the main UART of the BC95-GR
module
USB-UART Interface
Currently supports two UART ports:
Main UART (USB Serial Converter A):
⚫Transmits data (including AT commands)
⚫The default baud rate is 9600 bps
Debug UART (USB Serial Converter C):
⚫Obtains underlying logs through software debugging with
CoolWatcher, a debugging tool