OVERVIEW
Roving Networks offers a variety of Bluetooth serial adapters with different form factor and powering optionss 1). (see Table
These adapters enable wireless connection to any -legacy serial port and support bi directional RS 232 or RS 422 signaling - -
at a rate of up to 464 Kbps. To create a wireless cable replacement solution, simply attach the adapter to your device's
RS- - 232 or EIA 232/422 port and connect over Bluetoothto it . The transmission range is up to 330 feet (100 meters),
depending on environmental factors.
You can use these s madapter as Bluetooth aster or s s ) lave device . The serial port profile (SPP connection to the adapter
appears via a virtual COM interface. Data is sent and received on the client side as if a serial cable was connected to a real
COM port on the client.
You can also use the adapters ’ in cable replacement mode in which two Roving Networks Bluetooth devices are paired
using configuration switches. The USB- -to Bluetooth (RN- - USB X) dongle has pairing switches and you can use it with the
Bluetooth adapter to create a wireless connection to a PC without using the PC’s Bluetooth stack. For more information on
cable replacement, refer to the Bluetooth Cable Replacement Application Note on the Roving Networks website at
http://www.rovingnetworks.com/Support_Overview.
Table 1. Bluetooth Serial Adapter Hardware Interfaces
POWERING THE SERIAL ADAPTER
The Bluetooth serial adapters are powered using either rechargeable batteries, an external power cable, or using pin 9 of a
DB9 connector, depending on the adapter.
RN 40 422 Adapter-2 & RN- s
The RN 240 and RN 422 adapters are powered using- - either the DC power plug or via pin 9 of a DB9 connector.
RN 70 RN 274 220 XP Adapter-2 , - -& RN - s
The RN 270 274 adapters are powered using batteries- -and RN two rechargeable AAA , an external power cable, or using
pin 9 on a DB9 connector. The adapter has a The red button on it’s top, which is a soft on/off switch. adapter must have
batteries installed to function, even if the device is powered externally.
The RN 220XP adapter is powered with a LiPoly battery. The adapter has a - toggle on/off switch.
WARNING: Do NOT use alkaline batteries when connecting the external power cable or applying power on pin 9 of the
DB9 connector.
