Adeunis RF ARF44 Manual de usuario
Ref. 08-07-V5-lmn p. 1
A
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
A
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
Register description............................................................................12
Transceiver state machine ..................................................................13
Specifications..................................................................................14
ANNEX 1 : Firmware and document................................................15
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A
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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A
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
A
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
A
RF44
User Guide
Signal description
Pin
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
A
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
A
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
0
-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
A
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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