User`s manual

Ewave Stamper User’s Manual V1.0

1 Introduction

Ewave's STAMPER™ RF Data Modem is a

member of Ewave’s family of application specific

data radios. It is an intelligent wireless link

optimized for wireless programming and

debugging of the Parallax BASIC Stamp

(PBASIC) processor. This product is a true "drop-

in" replacement for a serial cable. The STAMPER

allows wireless real-time debugging or monitoring

of your PBASIC code. The STAMPER can also

be used as a general-purpose, highly reliable full-

duplex 9600 bps wireless data link.

Wireless communication couldn’t be easier: The

STAMPER’s on-board protocol CPU frees your

application of low-level communication details by

buffering and packetizing your data, calculating

and checking error detection codes (CRC), and

implementing an automatic acknowledge/retry

protocol. All this while providing sustained bi-

directional data streams at 9600 bps!

1.1 Features & Benefits

Wireless Debugging/Programming

• Drop in serial cable replacement for BASIC Stamp Programming and Debugging.

• Automatic protection from errors and interference via 16-bit CRC (Cyclic Redundancy Code) and

automatic Retry/Acknowledge.

• Works with standard Parallax BASIC Stamp Windows software (version 1.1 or later required).

General Modem Features

• Uses Ewave's proprietary RF10K DualDSP™ modem core.

• 100 to 300 feet range.

• FCC certified 900MHz (no user license required.)

• Connects via standard serial RS232 DB-9 (consult factory for other interface options.)

• Full duplex, allowing simultaneous transmission and reception of data.

• Transparent, simple operation: Looks like a serial cable to your application.

• Dynamic packetization of data for maximum throughput with minimum latency.

• Integrated antenna.

• Operation from regulated 5VDC or unregulated ~7.2-10VDC (in which case the modem can supply

5V, 40mA to another device); 3.3V version also available.

• Three status LEDs

• 9600 bps sustained data throughput.

• Five user-selectable channels (consult factory for other channel options.)

• High data reliability via transparent, automatic Retry/Acknowledge.

• Support for RS232 "Break" conditions and RTS/CTS control signals.