Adeunis RF ARF44 Manuel utilisateur

Ref. 08-07-V5-lmn p. 1

RF44

UART TTL modules

User Guide

Ref. 08-07-V5-lmn p. 2

No part of this document may be reproduced or transmitted (in electronic or

paper version, photocopy) without Adeunis RF consent.

This document is subject to change without notice.

All trademarks mentioned in this guide are the property of their respective

owner.

ADEUNIS RF

283, rue Louis Néel

38920 Crolles

France

Phone +33 (0)4 76 92 07 77

Fax +33 (0)4 76 08 97 46

Ref. 08-07-V5-lmn

RF44

User Guide

Ref. 08-07-V5-lmn p. 1

Table of Contents

About this Document ........................................................................2

Declaration of Conformity ................................................................3

Overview...........................................................................................4

Interface ...........................................................................................4

Mechanical specification........................................................................4

Signal description.................................................................................5

Directions are noted from module point of view...............................5

Radio Communication.......................................................................5

Available Channels ...............................................................................5

Channel selection.................................................................................6

Antenna requirements ..........................................................................6

Transceiver operating mode .............................................................7

Serial data rate ....................................................................................8

Command mode...................................................................................8

Transceiver mode.................................................................................9

Powerdown Mode...............................................................................10

AT Commands .................................................................................10

Description ........................................................................................10

Set of commands ...............................................................................11

Transceiver state machine ..................................................................13

Specifications..................................................................................14

ANNEX 1 : Firmware and document................................................15

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RF44

User Guide

Ref. 08-07-V5-lmn p. 2

About this Document

This guide describes the A

RF44

devices, their options and accessories

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RF44

User Guide

Ref. 08-07-V5-lmn p. 3

Declaration of Conformity

Manufacturer’s name: ADEUNIS R.F.

Manufacturer’s address Parc Technologique PRE ROUX IV

283 rue Louis NEEL

38920 CROLLES - FRANCE

declares that the product if used and installed according to the user guide available on

our web site www.adeunis-rf.com

Product Name: ARF44

Product Number(s): ARF7419A

is designed to comply with the RTTE Directive 99/5/EC:

EMC: according to the harmonized standard EN 301 489.

Safety: according to the standard EN 60950-1/2001

Radio: according to harmonized standard EN 300-220 covering essential

radio requirements of the RTTE directive.

Notes: - Conformity has been evaluated according to the procedure

described in Annex III of the RTTE directive.

- Receiver class (if applicable): 3.

According to the 1999/519/EC recommendation, minimum distance between the product

and the body could be required depending on the module integration.

Warnings: - CE marking applies only to End Products: Because this equipment is only a

subassembly, conformity testing has been reduced (equipment has been design in

accordance to standards but full testing is impossible). Manufacturer of End Products,

based on such a solution, has to insure full conformity to be able to CE label marking.

- As the integration of a radio module requires wireless technological

knowledge, ADEUNIS RF proposes its technical proficiency to its customers for a pre-

compliance qualification of end products. In case of no-conformity, ADEUNIS RF will not

be held back responsible if this stage has not been realised.

Crolles, November 6th, 2007

VINCENT Hervé / Quality manager

Download of the user guide

Thank you for having chosen the ADEUNIS RF products.

User guides can be uploaded directly on our web site www.adeunis-rf.com

Index Products

Paragraph OEM Modules > UART TTL Transceivers

Print version available upon request

9Tel : +33 4 76 92 07 77

9Email : [email protected]

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Ref. 08-07-V5-lmn p. 4

RF44

User Guide

Overview

The A

RF44

4 radio transceiver converts data from a serial link into a radio

frame to be sent to a similar piece of equipment. The communication is half-

duplex.

The operating parameters of these radio transceivers can be fully updated

through AT commands via the serial link.

Interface

Mechanical specification

The transceiver is available under SMD format without printed antenna.

Figure 1: mécanique version SMD sans antenne imprimée

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Ref. 08-07-V5-lmn p. 5

RF44

User Guide

Signal description

number

Pin name

I/O direction

Description

Power and reset

1, 17, 18 GND Digital GND (connected with

radio GND)

2 VCC Power supply

3 /Reset Reset

RF interface

20 GND RF Radio GND (connected with

digital GND)

22 RF in/out RF Antenna IN/OUT

24 GND RF Masse radio (connected with

digital GND)

Serial interface

14 RxD I Serial input.

16 TxD O Serial output

Powerdown

4 Power-down I Powerdown mode management

(leave unconnected if not used)

Not used

5, 6, 7, 8, 9, 10,

11, 12, 13, 15 Reserved O

Directions are noted from module point of view.

Radio Communication

Available Channels

This module modem has 14 channels over the 863-870 MHz Band that can

be selected using AT commands.

The channels are selected according to the following table:

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Ref. 08-07-V5-lmn p. 6

RF44

User Guide

Channel

S200

Frequency

(MHz)

13 863,25

12 863,75

11 864,25

10 864,75

9 865,25

8 865,75

7 866,25

6 866,75

5 867,25

4 867,75

3 868,25

2 868,75

1 869,525

0 869,75

Channel selection

The S200 register allows choosing the desired channel.

Antenna requirements

This module is not available with printed antenna. An external one has to be

added to achieve correct communication between the products. Several

possibilities:

The best technical/economical compromise is a ¼ wave (8.6 cm length)

antenna soldered on the “mother board”. The link between the RFin_out pin

of the module and the antenna should be a 50Ωline. The larger the ground

plane around the antenna, the more efficient and "isotropic" it will be.

If necessary, this antenna can be distant thanks to a coaxial cable connected

to the “mother board”; the line must be a 50Ωline.

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Ref. 08-07-V5-lmn p. 7

RF44

User Guide

RSSI Reading

The RSSI (Received Strength Signal Indicator) gives an indication for the

received power level.

It could be accessed with AT commands.

-120

-100

-80

-60

-40

-20

-120 -100 -80 -60 -40 -20 0

Input Power (dBm)

RSSI Readout (dBm)

The RSSI level is only an indication. Use this level with care due to the

dispersion between components.

The schema above could be modified from one to another product. The

operating temperature could also have an impact on these dispersions.

The RSSI level could also indicate the potential presence of jammer in the

used channel.

The RSSI is a necessary but not sufficient condition to obtain a

correct reception.

Transceiver operating mode

Two operating modes are available :

Command mode (usage of AT commands)

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Ref. 08-07-V5-lmn p. 8

RF44

User Guide

Transceiver or normal mode (serial data are transmitted on radio link)

At power up the transceiver is in transceiver mode: it is able to send / receive

data to / from the radio link according to its current parameter configuration.

Serial data rate

This module is only available with one data rate: 19200bps, 8 data bits, 1

stop bit, no parity, no flow control.

Command mode

The command mode is used to read and update the modem configuration

registers using AT command.

NOTE

The AT command can be locked using ATPWD command.

In command mode, the radio is inhibited (reception and transmission),

excepted when using test command.

Entering command mode :

issues on the serial link a +++ sequence. The

sequence of 3 consecutive + characters is accepted only if no character have

been seen before and after the +++ sequence. Register (S214) defines the

silence duration. The ‘O’ char is returned if the +++ sequence has been

accepted.

Tips 1 :

if you are using a terminal (such as Hyperterm), you have to send

the +++ sequence using a text file (first create a text file containing only the

+++ characters, and then use in Hyperterm the command “Send text file” in

the “Transfer menu”)

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