MOBILE TECHNOLOGIES MTI8038 Bluetooth Serial Adapter User Manual
- June 5, 2024
- Mobile Technologies
Table of Contents
MOBILE TECHNOLOGIES MTI8038 Bluetooth Serial Adapter User Manual
Technical Specifications
Model | MTI8038 |
---|---|
Bluetooth version | Compatible Bluetooth 3.0 Specification |
RF output power(Conducted) | 4.02dBm |
Operating Frequency | 2402~2480 MHz |
Spectrum extensions | FHSS |
Antenna Type | Chip |
Sensitivity | <-92dBm at < 0.1% BER |
Protocol | LM、LC、L2cap、SDP、RFCOMM |
Support services | Bluetooth Serial Port Profile (SPP) |
Power supply | DC 7~17V (Typical:12VDC) 100mA Rated current |
Security | Security certification, data encryption |
Baud rate | 1200~921600bps |
LED indicator | Power status, working mode |
Communication | PC, PDA, Smartphone etc. |
Application | Vehicular, Industrial Products etc. |
Maximum connection distance | 30 meters in open field |
Working temperature | -40℃~+85℃ |
Size | 82(L)×42(W)×21(H) |
Power Consumption
Mode| Test Condition (Slave
Device)
| Maximum
mA
| Typical
Value mA
| Minimum
mA
---|---|---|---|---
Connected| Data transmission| 14.7| 12.6| 12.1
No connection| Connect (inquiry) interval=2048 Connect (inquiry) continue=18|
17.2| 8.9| 7.8
Notes:
Under regular mode, all parameter is default.
The connection distance between this adapter and smart device is 10 meters. It continuously sends data at the same time with 38400 baud rate.
Description of LED indicator and inner button
There are two LED indicators on the serial adapter, one indicates connection status and one indicates master/slave mode.
Master/slave mode indicator (red)
In the parameter setting mode, this indicator is off.
In the data working mode, this indicator will be in the following status:
Working role | Status |
---|---|
Slave role | once every 2 seconds |
Master role | once every 5 seconds |
Connection status indicator (green)
In the parameter setting mode, this indicator is off.
In the data working mode, this indicator will be in the following status:
Connection status | Status |
---|---|
Not connected | once every second |
Connected | off |
Inner button: There is a button on PCB inside the black case. If need to restore factory settings, please press this button for 2 seconds.
Instructions
Power on this product.
The default factory setting of the adapter is 38400bps baud rate, 8-N-1
communication mode, no flow control. The match code is 1234.
In the data working mode, the Bluetooth smart device of the user terminal will search for the adapter, and after the authentication is passed, it will remember (save) the address of the adapter and establish a connection. The stored address and default connection password can be cleared by AT commands and parameter setting tools. If you need to modify the parameters, send “+++” within 30 seconds after power-on to enter the parameter setting mode, and use the relevant AT commands to set parameters, such as baud rate, authentication, and binding address.
The adapter is connected successfully, the connection indicator (green light) is off, and the status indicator (red light) keeps flashing. At this point, data can communicate with each other. For user equipment, this adapter can replace serial cable and receive data directly.
Once the connection is established, unless the user device has a weak signal or actively disconnects Bluetooth, the adapter will not actively disconnect, and the connection will remain.
Note: This parameter is stored in the Bluetooth chip. Therefore, even if the power is turned off, the parameters will remain the same as last time and will not be lost. After the parameter modification is completed, please send “AT+exit” or power on again to make the adapter enter the data mode.
If it is used for in-vehicle communication, it needs to cooperate with smart devices (Android V7.0 or above, IOS 8 or above) to conduct data communication through the MTI APP to collect vehicle information data.
AT Command
Note:
- The parameter setting command can be executed only when the serial adapter is in the Parameter Setting mode(that is, power on and send “+++”). After the parameters are modified, please return to data mode and then the parameter settings take effect.
- Each command must make the two bytes (\r\n)carriage return and line feed ((ASCII codes are 0x0D, 0x0A) as the end sign, or command can not be identified.
- The brackets “<>”outside of the parameter is added for convenient reading and the actual command is without the “<>”.
- Test Command
Command| Response| Parameter
---|---|---
AT\r\n| \r\nOK\r\n| None - Set / Inquire the baud rate
Command| Response| Parameter
---|---|---
AT+BAUD=\r\n| \r\nOK\r\n| rate:baud rate(1200、2400、4800、9600、19200、38000、38400 、 57600 、 115200 、230400、460800、921600)
Default:38400
AT+BAUD?\r\n| \r\n+BAUD:
\r\nOK\r\n
- Set / Inquire flow control mode
Command| Response| Parameter
---|---|---
AT+FLOWCONTROL=\r\n| \r\n OK\r\n| :
0:No flow control
1:adapt hardware flow control
Default:0
AT+FLOWCONTROL?\r\n| \r\n+FLOWCONTROL:
\r\n OK\r\n
- Set/Inquire device name
Command| Response| Parameter
---|---|---
AT+NAME=\r\n| \r\n OK\r\n| name:device name Default: definition according to the specification of products (when modifying, no more than 29 bytes.)
AT+NAME?\r\n| \r\n+NAME:\r\n
\r\n OK\r\n
- Set / Inquire whether authenticate
Command| Response| Parameter
---|---|---
AT+AUTH=\r\n| \r\n OK\r\n| enable: 0: Disable simple pairing 1: enable simple pairing Default:1
AT+AUTH?\r\n| \r\n+AUTH:\r\n
\r\n OK\r\n
Authentication: the security authentication is provided by this serial adapter. Only the authenticated users can communicate with it. If it is a pair of serial adapters, these processes are done automatically. When AT+AUTH=1, the serial adapter will automatically use the simple pairing mode to authenticate the device that supports simple matching. For the device that does not support simple matching, the serial adapter will authenticate the password (default password: 1234).
- Set / Inquire authentication password
Command| Response| Parameter
---|---|---
AT+PASSWORD=\r\n| \r\n OK\r\n| password:
Default:1234(No more than 4 or 6 Bytes)
AT+PASSWORD?\r\n| \r\n+PASSWORD:
\r\n OK\r\n
- Set / Inquire device type
Command| Response| Parameter
---|---|---
AT+CLASS=\r\n| \r\n OK\r\n| cod:device type(The length must be 6 bytes. )
Default:000000
AT+CLASS?\r\n| \r\n+CLASS:
\r\n OK\r\n
Device type: When the device type is keyboard, simple pairing must be enabled (AT+AUTH=1). Otherwise, the module may fail to pair the remote device.
- Set / Inquire device role
Command| Response| Parameter
---|---|---
AT+ROLE=\r\n| \r\n OK\r\n| role:
0:slave role
1:master role
Default:0
AT+ROLE?\r\n| \r\n+ROLE:
\r\n OK\r\n
- Exit the parameter setting mode
Command| Response| Parameter
---|---|---
AT+EXIT\r\n| \r\n OK\r\n| None - Set / Inquire whether it is bind
Command| Response| Parameter
---|---|---
AT+BIND=\r\n| \r\n OK\r\n| enable:
0: not bind address
1: bind address
Default: 0
AT+BIND?\r\n| \r\n+BIND:
\r\n OK\r\n
When binding the address: If the address has been memorized, the query matching is not allowed, and it can only be connected through its storage device; once the adapter has memorized the address, it can only establish a connection with the device it has memorized, and cannot establish a connection with other devices. . Therefore, when binding the address, if you want to establish a connection with another device, you must clear the stored address.
- Set/Inquire the memorized remote Bluetooth device
Command| Response| Parameter
---|---|---
AT+RADDR=\r\n| \r\n OK\r\n| addr : remote Bluetooth address
AT+RADDR?\r\n| \r\n+RADDR:\r\n
\r\n OK\r\n
If the adapter is not bound to the address, it can still be connected by other Bluetooth devices. If an address is bound, the binding address can be set by this command.
- Clear the memorized address
Command| Response| Parameter
---|---|---
AT+CLEARADDR\r\n| \r\n OK\r\n| None - Inquire remote Bluetooth devices
Command| Response| Parameter
---|---|---
AT+INQ\r\n| \r\n OK\r\n
\r\n+INQRESU :
\r\n+INQCOMP\r\n
Inquire complete
|
Bluetooth address
- Set / Inquire the data processing mode when not connected
Command| Response| Parameter
---|---|---
AT+DATAMODE=\r\n| \r\n OK\r\n| :
0: The data is stored in flash until the connection is established and sent to the other Bluetooth device
1: When not connected, the data received will lost directly
Default: 0
AT+DATAMODE?\r\n| \r\n+DATAMODE:
\r\n OK\r\n
- Inquire local Bluetooth address
Command| Response| Parameter
---|---|---
AT+LADDR?\r\n| \r\n+LADDR:\r\n
\r\n OK\r\n
| addr:local Bluetooth address
Note: When using the address setting command, it must be in the same format as the local or remote Bluetooth address queried.
- Inquire software version
Command| Response| Parameter
---|---|---
AT+VERSION?\r\n| \r\n+VERSION:\r\n
\r\n OK\r\n
| Para1:software version
17. Software reset
Command| Response| Parameter
---|---|---
AT+RESTART\r\n| \r\n OK\r\n|
After sending this command, the serial adapter’s program will reset and no need to re-power.
- Restore default settings
Command| Response| Parameter
---|---|---
AT+RESET\r\n| \r\n OK\r\n| None - Inquire all commands
Command| Response| Parameter
---|---|---
ATZ?\r\n| List all commands
\r\n OK\r\n
| List all the
commands
- Device firmware upgrade
Command| Response| Parameter
---|---|---
AT+DFU\r\n| \r\n OK\r\n| None
Manufacture:
Company Name: Chongqing JINOU Science & Technology Development Co., Ltd.
Address: D1-802, Overseas Students Pioneer Park, No.71 Kecheng Rd,
Jiulongpo District, 400039, Chongqing
FCC STATEMENT
Labeling requirements.
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.
Information to user.
Any Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.
Information to the user.
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
RF exposure statement:
This equipment complies with FCC radiation exposure limits set forth for an
uncontrolled environment.
This transmitter must not be co-located or operating in conjunction with any
other antenna or transmitter.
This equipment should be installed and operated with minimum distance 20cm
between the radiat or & your body.