BRM01

2.4GHZ BLUETOOTH TRANSCEIVER MODULE EVALUATION KIT BRM01 “F” Antenna BRM Module Jumper Pin Must be fitted in rightmost position for Voice connection BRM LEDs “Connect” Button Reset BRM Button Amber = Data Green = Connected Red = Power 9 Way Data Connector 2.5mm H eads et Socket BATT Jumper JP1 DC POWER IN +7V to +9V 2.1mm Centre = positive Please Note The BRM01 modules are not included with the evaluation Kit DS362-2 Dec 03 ©2003 Reg. No. 227 4001, England Page 1 2.4GHZ BLUETOOTH TRANSCEIVER MODULE EVALUATION KIT BRM01 Simple Operation Connect a headset via the 2.5mm headset jack to each unit. Insert 3xAAA batteries into the battery holders. Observe correct polarity. Connect the power connect jumper JP1. The BRM will power-up and the LEDs will cycle through AMBER, AMBERGREEN, AMBER-GREEN-RED then will settle on RED if all self-tests are passed. Press the connect switch on the BRM PCB and the 2 units will connect and automatically set-up a SCO voice connection (duplex voice connection). Press the “connect” button to disconnect the link. DC Power The unit can be powered by either 3xAAA batteries (for mobile operation) or by a DC power supply of between +7V and +9V (300mA). If operating from 3xAAA batteries then the battery connect jumper JP1 must be fitted Data Connector A 9-way D-Type connector is provided to allow access to the RS232 data port on the BRM module. The functions of the pins are as follows: PIN Number 1 2 3 4 5 6 7 8 9 Function N/C 232-TXD 232-RXD Vcc GND N/C 232-CTS 232-RTS N/C Output at RS232 level: BRM Transmit data to Host(1 start, 8 data, no parity, 1 stop, 115.2kBaud) Input at RS232 level: BRM Transmit data from Host(1 start, 8 data, no parity, 1 stop, 115.2kBaud) Can be used to supply 4.0 – 5.5V regulated when batteries not fitted Ground connection for data and power Input at RS232 level: +V = BRM will not send to Host, -V = BRM may send to host Output at RS232 level: +V = OK to send to BRM, -V = Not OK to Send to BRM. Connect to CTS on Host Comments Other Information For a detailed description of the BRM Module please see the following documents:BRM Datasheet: BRM Programmers Guide: DS360 DS361 The SCO voice link is transparent to any data link that may be set-up. When the "connect" button is pressed the unit goes through the Bluetooth connect protocol of paging the remote unit, synchronising the hop sequences and establishing a SCO link. There is automatic power control i.e. when the units are close the transmitted RF power will be low and as they are moved apart the power will automatically increase to maintain the link. When the RF power is at MAX (automatically) it is likely that a buzz of around 250Hz will be heard. This is due to the Audio CODEC is not being screened and is susceptible to the transmitted RF. It is possible with careful consideration to layout and decoupling to virtually eliminate this buzz. The frequency hopping nature of the BRM will allow a link to be maintained even with severe interference. The onboard antenna is an inverted-F type and will give a line-of-sight range of around 300M if the antennas of each unit are pointed towards each other. The range can be greatly improved if the on-board antennas are removed (by cutting the PCB along the drill holes) and a directional antenna fitted via a SMA RF connector. DS362-2 Dec 03 ©2003 Reg. No. 227 4001, England Page 2 2.4GHZ BLUETOOTH TRANSCEIVER MODULE EVALUATION KIT Ordering Information Part Number BRM-EVAL BRM01 Description BRM Transceiver Evaluation Kit, 2 Host PCBs only For more information or general enquiries, please contact: RF Solutions Ltd., Unit 21, Cliffe Industrial Estate, South Street, Lewes, E Sussex, BN8 6JL. England Tel +44 (0)1273 898 000 Email sales@rfsolutions.co.uk Fax +44 (0)1273 480 661 http://www.rfsolutions.co.uk RF Solutions is a member of the Low Power Radio Association All Trademarks acknowledged and remain the property of the respected owners Information contained in this document is believed to be accurate, however no representation or warranty is given and R.F. Solutions Ltd. assumes no liability with respect to the accuracy of such information. Use of R.F.Solutions as critical components in life support systems is not authorised except with express written approval from R.F.Solutions Ltd. DS362-2 Dec 03 ©2003 Reg. No. 227 4001, England Page 3