RN-21-U Roving Networks Inc, RN-21-U Datasheet - Page 26

• Manufacturer Part Number: RN-21-U
• Description: MODULE BLUETOOTH 2.0/EDR CLASS1
• Manufacturer: Roving Networks Inc

Specifications of RN-21-U

• Frequency: 2.4GHz Center
• Data Rate - Maximum: 921kBaud
• Modulation Or Protocol: FHSS
• Applications: Bluetooth v2.0
• Power - Output: 16dBm
• Sensitivity: -86dBm
• Voltage - Supply: 3 V ~ 3.6 V
• Current - Receiving: 60mA
• Current - Transmitting: 100mA
• Data Interface: PCB, Surface Mount
• Memory Size: 8MByte Flash
• Antenna Connector: PCB, Surface Mount
• Operating Temperature: -40°C ~ 85°C
• Package / Case: Module
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

10.2 Dip Switch Settings
10.3 Instant Cable Replacement
www.rovingnetworks.com
1 – RESTORE FACTORY DEFAULTS- Set this switch ON, power up unit, and toggle the switch from
ON to OFF 3 times to return the unit to factory settings.
2 - AUTO DISCOVERY – In slave mode, sets a special class of device which is used by a remote master to
auto connect. If Switch 3 also SET, the device performs a search, stores, and connects to a remote slave
which has this switch 2 set.
3 - AUTO MASTER - Device acts as Bluetooth master, auto-connects to a stored remote address. First set
the Bluetooth address of the slave device using the SR command or allow the device to auto discover and
connect by via Switch 3 AND Switch 2.
4 - DEFAULT BAUD RATE - OFF = 115K will be overridden by software baud rate configuration
commands, ON = 9600 ignores any software configuration
Using two Roving Networks Bluetooth serial adapters or BluePlug USB dongle set the switches on
each device as shown below.
Power up both devices and the master will discover the slave device, store its Bluetooth address and
connect. The devices are now paired and the green LED on each device should be on solid.
After pairing, set switch 2 on both devices to OFF so that they don’t try to re-pair each time power is
cycled. Every time the devices get in proximity of one another the will connect. The master will not
attempt to connect to any other device.
To break this pairing restore the factor defaults using dip switch 1.
Master mode
Auto discovery and auto Master on
809 University Avenue
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Los Gatos, CA 95032
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Tel [phone]
rn-bluetooth-um Version 4.77 1/24/2011
Slave
Auto discovery on
Advanced User Manual
• [e-mail]
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