NordField
E l e c t r onic s
Serial Bluetooth RS-232 Adapter
Part no.: UCBT232B and UCBT232EXA
NORDFIELD
Specialists in Serial
Communication. With over 15
years of experience in the field
Communication range up to 330 feet
we can solve most serial
Multiple power options
problems.
OS independent
PRODUCTS
Android support
Large selection of Serial RS232,
Supports SPP (Serial Port Profile)
RS485 and RS422 converters,
USB to Serial adapters, Isolators,
Highly configurable by Terminal software
Ethernet to Serial converters,
LED indication lights
Serial Repeaters, Wireless Serial
Fast and user friendly setup
modules, Serial Bluetooth
adapters and Serial Port Cards.
TECHNICAL SUPPORT
To access technical support,
please visit www.NordField.com
UCBT232B / UCBT232EXA Package Contents:
 RS-232 adapter x 1
 Battery power wire and connector x 1
 User manual x 1
 USB Cable x 1
 Di-pole antenna (UCBT232EXA only)
where you will find:
- Latest drivers and updates
- Technical tips
- Documentation
- Configuration support
Power options:
The adapter can be powered by one of the following:
Mini USB cable (5VDC)
DB9 connector Pin 9 (5VDC)
External battery, we recommend Li-Ion batteries (3~5 VDC)
- and much more…
Feel free to contact our technical
support team at
mail@usconverters.com
Default factory settings:
Baud rate: 19200 bps
Data bit: 8
Parity: none
Stop bit: 1
Flow control: none
Mode: Slave
Bluetooth PIN code: “1234”
NordField
E l e c t r onic s
These settings can be configured via Tera Term or Purrt. Please see the 'Setup Guide' and below
parameter table for details.
105 Stations West Drive
Sedona, AZ 86336, USA
www.NordField.com
mail@NordField.com
1
Copyrights © Nordfield Electronics
SPECIFICATIONS
NordField
Model number
UCBT232B
Recommended OS
Independent of OS
Processor
CSR BC04
Serial interface
RS232 (TX and RX), Female D-Sub 9-pin
Baud rates
1200, 4800, 9600, 19200, 38400, 57600, 115200
Stop bits
1 or 2
NORDFIELD
Data bits
7 or 8
Specialists in Serial
Parity
None, odd, even
Communication. With over 15
Operating distance
Up to 330 feet (100 meters)
years of experience in the field
Bluetooth stack
Serial Port Profile (SPP)
PIN
PIN code available for pairing
Flow control
CTS/RTS configurable by software
NMEA 183 compatible
Yes
E l e c t r onic s
we can solve most serial
problems.
PRODUCTS
Can pair while serial interface receives Yes
data
Large selection of Serial RS232,
Full duplex RS232
Yes, can send and receive simultaneously both when
connected over Bluetooth and when used in pairs.
Parameter configuration
Through the serial port or over Bluetooth
Bluetooth standard
V2.0 Class 1, + EDR
Ethernet to Serial converters,
Frequency range
2.4GHz at“ 2.4835 GHz ISM Band
Serial Repeaters, Wireless Serial
Hopping
1.600/sec, 1MHz channel space
modules, Serial Bluetooth
Modulation
GFSK-1, DQPSK-2, 8-DPSK-3 Mbps
adapters and Serial Port Cards.
Tx power
Max. 18dBm (class 1)
Rx sensivity
-86 dBm typical
Antenna
Internal chip
Antenna gain
max 1 to 2 dBi
DEC/DTE
Manual switch
please visit www.NordField.com
Power
+5 to 5.5VDC powered by:
Option 1: USB cable (included)
Option 2: Pin 9 on DB9 connector
Option 3: External battery (not included)
Option 4: Mini USB adapter
where you will find:
Current draw
Max 90mA
Indication LEDs
TX, RX and Power
Operating temp.
-20C ~ 75C
Dimensions
35 x 45 x 15 mm
Certifications
CE, FCC
Warranty
2-year Limited Warranty
ECCN
4A994.a
Schedule B
8471.80.1000
HTS
8517.18.0050
RS485 and RS422 converters,
USB to Serial adapters, Isolators,
TECHNICAL SUPPORT
To access technical support,
NordField
2
Copyrights © Nordfield Electronics
Status LED (Blue)
Power LED (Red)
Group:
G: Enable
N/G: Disable
S: Slave
M: Master
Mini USB (Power In)
Reset
Power Source Switch
DEC/DTE Switch
Power Line Connector
Reset Button:
Short press: The adapter disconnects and then reconnects a wireless link
Long press (more than 3 sec.): Restores factory settings
DTE/DCE switch
Use the slide switch to swap between DTE and DCE.
Master / Slave DIP switch:
The adapter can be set either as a slave or a master. The master and slave will then automatically link without pairing. The 'ROLE' and 'Auto'
commands are disabled when using the DIP switch Master/Slave function.
Group (G) / No-Group (N/G) DIP switch:
In combination with the Master/Slave DIP switch the Group / No-Group DIP switch will allow you to connect to one slave in a group of slaves with
the 'CONNECT' command. This can be convenient if you need to switch between different slaves in the coverage area.
LED Status
Power LED on
Description
The power input is equal or larger than 3.5 Volt, (can be checked with
the “DETECT” command)
Power LED (0.5 sec) blinking
The power input is lower than 3.5 Volt, (can be checked with the
“DETECT” command)
Link LED off
No pairing
Link LED fast (0.1 sec) blinking
Pairing (slave or master mode)
Discoverable and waiting for a
Link LED fast (0.3 sec) blinking
connection (slave mode)
Link LED slow (0.9 sec) blinking
Inquiring (master mode)
Link LED very slow (1.2 sec) blinking
Connecting (master mode)
Link LED steady on
Connection established
E l e c t r onic s
105 Stations West Drive
Sedona, AZ 86336, USA
www.NordField.com
mail@NordField.com
3
Copyrights © Nordfield Electronics
Parameters.
The parameters can be configured via the DB9 RS232 serial port or over Bluetooth
(unless you set the adapter to Command Mode). Tera Term or Hyperterminal which can be downloaded from www.nordfield.com is
recommended for configuring the parameters. Please see the 'Setup Guide' for details.
Note 1: Commands should be typed in either all CAPITAL letters or all lowercase letters.
Note 2: Commands cannot be received by the adapters if they are paired/linked.
Command
Value
Description
Change the local adapter from “Data mode” to “Command mode”. A minimum of 500ms silence must
appear before the command. The command will be unavailable if data pass through within 1 second after
entering the command. The time interval between each entered characters should be:
[500ms] “<” [500ms] “<” [500ms] “<” [1500ms]
?
Inquire the setting status of the “<<<” command.
Y
Enable the “<<<” command
N
Disable the “<<<” command
Change the remote adapter from “Data mode” to “Command mode”. A minimum of 500ms silence must
appear before the command. The time interval between each entered characters should be:
[1 sec] “>” [1 sec] “>” [1 sec] “>” [2 sec]
?
Inquire the setting status of the “>>>” command.
Y
Enable the “>>>” command
N
Disable the “>>>” command
<<<
<<<=
(Default)
>>>
>>>=
(Default)
ADDRESS=
This command is used to display the Bluetooth address of the local adapter.
?
AT
Inquire the Bluetooth address of the local adapter.
Checks the connection status between control terminal and the RS-232 adapter. Response: “OK” when the
connection is ok. “ERROR” when the connection is unsuccessful.
AUTO=
This command is used to enable/disable the auto-connection feature. It is available only when the adapter
is in Master mode and only when DIP=N. The system will not re-start after changing this parameter.
(Default)
Y
Master and Slave will connect automatically.
N
Master and Slave will need to be connected manually with the 'CONNECT' command.
?
Inquire the current setting.
BAUD=
This command is used to specify the baud rate of the COM port.
The command will need 200 ms delay.
(Default)
1200
1200 bps
2400
2400 bps
4800
4800 bps
9600
9600 bps
19200
19200 bps
38400
38400 bps
57600
57600 bps
115200
115200 bps
230400
230400 bps
460800
460800 bps
921600
921600 bps
R
Restore the default settings. (Baud rate =19200 bps)
?
Inquire the current baud rate.
CONNECT=
This command is used to establish a connection manually. It is available only when the adapter is in the
Master role.
DEVICE
Connect the adapter to a specified Bluetooth device manually.
It is available only when “DEVICE=xxxxxxxxxxxx” is executed.
1~8
xxxxxxxxxxxx
Connect the adapter to a Bluetooth device in the neighborhood found through “SEARCH=?”
Connect the remote adapter by typing the MAC address directly without searching.
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Copyrights © Nordfield Electronics
?
Y
N
P
DEFAULT=
Recover the latest connection in the command mode.
Disconnect the two adapters in the command mode
Connect the previous connected adapter.
This command is used to restore the default settings and originate a warm start.
Y
Restore the default settings (e.g. 19200 bps).
The command will re-start the system for 1 second.
The command is used to detect the voltage of the power supply and set the alert value of low power.
DETECT=
(Default)
Display the MAC address of the latest paired device.
N
Disable the voltage detection
Y
Enable the voltage detection
R
Restore the default value (3.5 Volt)
x.x
Setup the range of voltage detection from 3.0 to 3.7 Volt. The “x” indicate the number.
?
DEVICE=
Inquire the setting status
For security purpose, this command is used to specify a unique remote Bluetooth serial adapter to be
connected.
In the Master mode, the adapter pairs and connects with the designated remote slave address. If the
adapter is in the Slave mode, this command is a filter condition to accept the inquiry of the Master device.
xxxxxxxxxxxx
“xxxxxxxxxxxx” is a string of 12 hexadecimal digits.
R
Restore the status in which the adapter can connect with any remote address.
?
Inquiry the designated address that can be paired and connected.
DFU=
Device Firmware Upgrade
Y
DIP=
?
Y
(Default)
N
DISCOVER=
Enable / disable the DIP switch.
Inquire the setting status of the DIP switch function.
Enables the DIP switch. The “ROLE” and “AUTO” commands are not available to set the “Master” or
“Slave”.
Disable the DIP switch. The “ROLE” and “AUTO” commands are available when the DIP=N.
This command is used to specify whether the adapter can be discovered or connected by remote devices.
This command is available only when the adapter is in Slave mode.
N
The adapter enters the discoverable mode. If a pair has been made, the original connection can be
resumed. But other remote master device cannot discover this adapter.
(Default)
Y
The adapter enters the discoverable mode.
?
Inquire the current setting.
ECHO=
This command is used to specify whether the adapter echoes characters received from the UART back to
the DTE/DCE.
(Default)
N
Command characters received from the UART are not echoed back to the DTE/DCE.
Y
Command characters received from the UART are echoed back to the DTE/DCE.
?
Inquire the current setting.
FLOW=
This command enable or disable flow control signals (CTS/RTS) of the UART port. Note, the setting is not
affected by DEFAULT.
The command will need 1 second delay.
(Default)
N
Disable flow control.
Y
Enable flow control.
?
Inquire the current setting
NAME=
This command is used to specify a name for the adapter.
You can specify a friendly name using 0 to 9, A to Z, a to z, space and –, which are all valid characters.
Note that “first space or -, last space or – isn’t permitted”. The default name is “Serial Adapter”.
(Default)
Serial Adapter
Default device name
xx….xx
“xx….xx” is a character string with the length from 2 to 30.
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Copyrights © Nordfield Electronics
R
Restore the default settings name=“Serial Adapter”.
?
Inquire the name of the local adapter.
PARITY=
This command is used to specify parity bit setting of COM port.
The command will need 200 ms delay.
(Default)
N
None parity bit
O
Odd parity
E
Even parity
?
Inquire the current setting.
PIN=
This command is used to specify a PIN. The default PIN is “1234”. Paired adapters should have a same
PIN. This command is used to specify a PIN. The default PIN is “1234” and the length is not smaller than 4.
Paired adapters should have a same PIN. The PIN code includes the numeral and English characters.
(Default)
1234
xx….xx
“xx….xx” is a 4~16 digit string or English character (in capital or lower case)
N
Cancel authentication by PIN.
R
Restore the default settings PIN=“1234”.
?
Inquire the current PIN.
PROMPT=
The command is used to decide whether result messages are prompted when Setup commands are
executed. The result messages are: OK/ERROR for command execution, or
CONNECT/DISCONNECT/Try Connect Device for connection status.
(Default)
Y
Prompt result messages.
N
Not prompt result messages.
?
Inquire the current setting.
RECONNECT=
(Default)
The command is used to re-connect the lost link for the Master adapter.
?
Inquire the current setting.
Y
Re-connect is disable
N
Re-connect is Enable
ROLE=
This command is used to specify whether the adapter is in the master or slave mode. If the device mode is
changed, the adapter will reboot and all paired addresses will be cleared. The command is available when
the adapter is in DIP=N status. The command will need 1 second delay.
(Default)
M
Set the adapter to the master mode.
S
Set the adapter to the slave mode.
?
Inquire the current mode of the adapter.
Received signal strength indication
?
Display the Received signal strength indication in command mode when connected.
RSSI=
SEARCH=
1.
Strong: RSSI>-9
2.
Medium: -9>RSSI>-20
3.
Weak: RSSI<-20
This command is used to search for any Bluetooth device in the neighborhood within one minute. If any
device is found, its name and its 12-digit-address will be listed. The search ends with a message “Inquiry
ends. xx device(s) found.” This command is available only when the adapter is in the master role by
manual.
?
STATUS=
STOP=
Inquire Bluetooth devices in the neighborhood, listing 8 devices the maximum
Inquire all the current setting of the adapter.
T
Inquire the inner temperature of the IC in centigrade
?
Display the current setting of the adapter
This command is used to specify one or two stop bits of COM port.
The command will need 200ms delay.
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Copyrights © Nordfield Electronics
(Default)
1
One stop bit.
2
Two stop bits.
?
Inquire the current setting.
VERSION=
This command is used to inquiry the firmware version.
?
Inquire the version codes.
Some commands are unavailable under certain conditions:
If this command is set
These commands are unavailable
ROLE=S
SEARCH=? , CONNECT=?, CONNECT=P , CONNECT=xxxxxxxxxxxx , CONNECT=DEVICE
AUTO=Y
SEARCH=? , CONNECT=? , CONNECT=P , CONNECT=xxxxxxxxxxxx , CONNECT=DEVICE
DIP=Y
ROLE=M, ROLE=S , AUTO=Y , AUTO=N ,DISCOVER=Y,DISCOVER=N
<<<
SEARCH=? , CONNECT=? , CONNECT=P , CONNECT=xxxxxxxxxxxx , CONNECT=DEVICE , DFU=Y
>>>
SEARCH=? , CONNECT=? , CONNECT=P , CONNECT=xxxxxxxxxxxx , CONNECT=DEVICE , DFU=Y
Not connected
RSSI=? , CONNECT=Y , CONNECT=N
RS232 Interface:
Pin
1
2
3
4
5
Signal
CD
TxD
RxD
DSR
GND
DTE Direction
DCE Direction
Description
Input
Output
Not connected
Output
Input
Transmitted data
Input
Output
Received data
Input
Output
Not connected
N/A
N/A
Signal ground
Not connected
6
DTR
Output
Input
7
CTS
Input
Output
Clear to send
8
RTS
Output
Input
Request to send (Default)
9
Vcc
Input
Input
Power supply (5VDC, 1.5A Max.)
Remarks: The default hardware flow control is CTS/RTS.
105 Stations West Drive
Sedona, AZ 86336, USA
www.NordField.com
mail@NordField.com
7
Copyrights © Nordfield Electronics