Chaoqiansi CQ-F20 Bluetooth Module User Manual

Chaoqiansi CQ-F20 Bluetooth Module

Specifications :

• Model: CQ_F20_01
• Protocol: Single-mode BLE5.4
• Transmission Distance: Up to 200 meters
• Transmit Power: 0dbm
• Receiving Sensitivity: -95dbm
• Transmission Rate: >10kByte/s
• Operating Voltage: 2.3~3.3V
• Average Working Current: 5.5mA
• Sleep Current: 0.6uA
• AT Operable Peripherals: IO output, IO acquisition, ADC acquisition, PWM output
• Operating Temperature: -20~+80°C
• Size: Regular size
• UUID Service: FFF0 (changeable by command)
• UUID Notify Characteristic: FFF1 (changeable by command)
• UUID Write Characteristic: FFF2 (changeable by command)
• Maximum Data Length of a Packet: 500Byte (if supported by the mobile phone)

Product Usage Instructions

1. Module Installation:
   Insert the Bluetooth module into the designated slot on your device, ensuring proper alignment and connection.

2. Power Connection:
   Connect the power supply within the specified voltage range of 2.3V to 3.3V to the module for operation.

3. AT Commands Configuration:
   Use AT commands to customize settings such as device name, baud rate, sleep state, GPIO control, ADC acquisition, and more.

4. Data Transmission:
   Utilize the module for data transmission over Bluetooth with a transmission rate exceeding 10kByte/s within the specified distance range.

5. Temperature Considerations:
   Operate the module within the temperature range of -20°C to +80°C for optimal performance and longevity.

Frequently Asked Questions (FAQ):

• Q: Can I change the UUID characteristics of the module?
  A: Yes, you can change the UUID service, notify characteristic, and write characteristic using specific commands provided in the manual.

• Q: What is the maximum communication distance of the module?
  A: The module supports a communication distance of up to 200 meters under optimal conditions.

• Q: How can I reduce power consumption when using the module?
  A: To minimize power consumption, ensure the module is in a sleep state when not actively transmitting data, as the sleep current is as low as 0.6uA.

Bluetooth Module CQ_F20_01 User Manual

 Introduction

• CQ_F20_01 regular size Bluetooth module, this module is a single-mode Bluetooth module, supports BLE5.4 protocol, is stable and reliable, has complete functions, and the communication distance exceeds most similar products on the market. The optimal distance can reach 200 meters, the minimum power consumption is as low as 0.6uA, and the ultra-large MTU, single packet data is up to 500Byte, and sub-packeting is not required in most cases.
• Through the complete AT commands, users can change the device name, baud rate, sleep state, and control GPIO output, acquisition, PWM output, ADC acquisition, and realize the function expansion of ordinary MCU.

without interference, Redmi K60)
Transmit power| 0dbm
Receiving sensitivity| -95dbm
Transmission rate| >10kByte/s
Operating Voltage| 2.3~3.3V
Average working current| 5.5mA
Sleep current| 0.6μA
AT operable peripherals| IO output, IO acquisition, ADC acquisition, PWM output
Operating temperature| -20℃~+80℃
Size| 10mm×10mm
UUID Service| FFF0 (changeable by command)
UUID Notify characteristic (sent from slave to master)| FFF1 (changeable by command)
UUID write characteristic (master sends to slave)| FFF2 (changeable by command)
Maximum data length of a packet| 500Byte (if supported by the mobile phone)

Pin Diagram

AT command set

1.  <AT+HELP>Get AT command help 2、 <AT+VERS> query version number
2. <AT+BAUD> query or set baud rate
3. <AT+NAME> query or module name
4. <AT+SLEEP> enters sleep mode
5. <AT+RESET> Device restart
6. <AT+DISC> disconnect
7. <AT+ADDR>Get Bluetooth MAC address 9、 <AT+PWM>Set PWM
8. Get AT command help 2、 query version number
9. <AT+BAUD> query or set baud rate
10. <AT+NAME> query or module name
11. <AT+SLEEP> enters sleep mode
12. <AT+RESET> Device restart
13. <AT+DISC> disconnect
14. <AT+ADDR>Get Bluetooth MAC address 9、 <AT+PWM>Set PWM
15. <AT+GIO> Get gpio status
16. <AT+SIO> Set gpio output
17. <AT+ADC> Get ADC data
18. <AT+PSW>Set Bluetooth connection password
19. <AT+FACTORYPIN> Set the factory reset pin
20. <AT+BLELED> Set the Bluetooth status indicator pin
21. <AT+FACTORY>Restore factory settings
22. <AT+UUID> Set the UUID of the service and characteristic <AT+UPDATA> Upgrade command

Notice:

1. The default baud rate of the serial port is 115200. It cannot be directly connected to the computer USB port, but can only be connected to the TTL serial port.
2. AT commands are valid at any time (regardless of whether the Bluetooth is currently connected or not connected). Any command sent by either party (whether the module sends it to the Bluetooth host, or the Bluetooth host sends it to the module) can trigger the relevant AT command as long as the command header is “AT”, and the command will be sent to the other party synchronously.
3.  All symbols are entered in English .
4. A maximum of 30 AT commands can be sent at one time. A semicolon should be added between each AT command. Spaces and carriage returns do not affect the execution of commands, so there should be no spaces when setting the device name.
5. The mobile phone needs to apply for the maximum MTU. Otherwise, the default maximum size of each data packet is 20 bytes. The MTU applied by different mobile phones may be different, and it needs to be determined based on the actual situation of the mobile phone.
6. All IOs with less than two digits need to be padded with 0 in front. For example, A5 needs to be written as A05.

Integration instructions for host product manufacturers according to KDB 996369 D03 OEM Manual v01

List of applicable FCC rules
FCC Part 15 Subpart C 15.247.

Specific operational use conditions

• The module can be used for mobile applications with a maximum -0.58dBi antenna. The host manufacturer installing this module into their product must ensure that the final compos it product complies with the FCC requirements by a technical assessment or evaluation to the FCC rules, including the transmitter operation. The host manufacturer has to be aware not to provide information to the end user regarding how to install or remove this RF module in the user’s 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.

• Limited module procedures

  • Not applicable. The module is a Single module and complies with the requirement of FCC Part 15.212.

• Trace antenna designs

  • Not applicable. The module has its own antenna, and doesn’t need a host sprinted board microstrip trace antenna etc.

• RF exposure considerations

  • The module must be installed in the host equipment such that at least 20cm is maintained between the antenna and user’s body; and if RF exposure statement or module layout is changed, then the host product manufacturer required to take responsibility of the module through a change in FCC ID or new application. The FCC ID of the module cannot be used on the final product. In these circumstances, the host manufacturer will be responsible for reevaluating the end product
    (including the transmitter) and obtaining a separate FCC authorization.

• Antennas

  • Antenna Specification are as follows: Type: PCB Antenna Gain: -0.58dBi Max. This device is intended only for host manufacturers under the following conditions: The transmitter module may not be co-located with any other transmitter or antenna; The module shall be only used with the internal antenna(s) that has been originally tested and certified with this module. The antenna must be either permanently attached or employ a „unique‟ antenna coupler. As long as the conditions above are met, further transmitter test will not be required. However, the host manufacturer is still responsible for testing their end-product for any additional compliance requirements required with this module installed (for example, digital device emissions, PC peripheral requirements, etc.). 2.8 Label and compliance information
  • Host product manufacturers need to provide a physical or e-label stating “Contains Bluetooth module, Model: CQ_F20_01, FCC ID:2BGTJ-CQ-F20” with their finished product

• Information on test modes and additional testing requirements

  • Host manufacturer must perform test of radiated & conducted emission and spurious emission, e.t.c according to the actual test modes for a stand-alone modular transmitter in a host, as well as for multiple simultaneously transmitting modules or other transmitters in a host product. Only when all the test results of test modes comply with FCC requirements, then the end product can be sold legally.

• Additional testing, Part 15 Subpart B disclaimer

  • The modular transmitter is only FCC authorized for FCC Part 15 Subpart C 15.247
    and that the host product manufacturer is responsible for compliance to any other FCC
    rules that apply to the host not covered by the modular transmitter grant of certification. If the grantee markets their product as being Part 15 Subpart B compliant (when it also contains unintentional-radiator digital circuity), then the grantee shall provide a notice stating that the final host product still requires Part 15 Subpart B compliance testing with the modular transmitter installed.

Federal Communication Commission 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 .

Note: 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 or more 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.

Warning: Changes or modifications made to this device not expressly approved by Suzhou Chaoqiansi Information Technology Co., Ltd may void the FCC authorization to operate this device.
Note: The manufacturer is not responsible for any radio or TV interference caused by unauthorized modifications to this equipment. Such modifications could void the user’s authority to operate the equipment.

RF exposure statement:
The transmitter must not be collocated or operated in conjunction with any other antenna or transmitter. This equipment complies with the FCC RF radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with a Minimum distance of 20cm between the radiator and any part of your body.
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.
IMPORTANT NOTES Co-location warning: This transmitter must not be co- located or operating in conjunction with any other antenna or transmitter.

• OEM integration instructions:
  This device is intended only for OEM integrators under the following conditions: The transmitter module may not be co-located with any other transmitter or antenna. The module shall be only used with the external antenna(s) that has been originally tested and certified with this module. As long as the 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 (for example, digital device emissions, PC peripheral requirements, etc.).

• Validity of using the module certification:

• In the event that these conditions cannot be met (for example certain laptop configurations or co-location with another transmitter), then the FCC authorization for this module in combination. with the host equipment is no longer considered valid and the FCC ID of the module cannot 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 end product must be labeled in a visible area with the following: “Contains Transmitter Module FCC ID: 2BGTJ-CQ-F20”.

• Information that must be placed in the end user manual:

• 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 user’s 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.

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