DS650-6 June ‘06

©2006 RF Solutions Ltd, www.rfsolutions.co.uk

Page 10

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RF650

6

Evaluation Board

software tool

The RF650 evaluation board provides a reliable proven host board for development with the RF650

module. A single board is supplied, no RF650 module is included with the board and the antenna socket

is not fitted. This enables the board to be used for either the 433MHz or 868MHz module with a range of

antenna socket types.

6.1 Connections

6.1.1

Power

The evaluation board requires a 5 - 12Vdc power source. The maximum operational supply current is <50mA.

Power is applied to the two way screw terminal labelled ‘CN1A_B.’ The left hand side of the screw terminal is

GND (nearest the DB9 connector).

6.1.2

RS232 Connector

The RF Modem interfaces to the host computer via an RS232 connection using a standard DB9 connector as

shown in the diagram below.

8

3

2

20

7

6

4

5

22

1

2

3

4

5

6

7

8

9

PC Serial Port

DTE

(DB25)

RF M ode m

DCE

(DB9F)

Tx

Rx

DTR

GND

RTS

CTS

1

2

3

4

5

6

7

8

9

1

2

3

4

5

6

7

8

9

PC Se rial Port

DTE

(DB9)

RF M odem

DCE

(DB9F)

Tx

Rx

DTR

GND

RTS

CTS