MODULE, RX, FM, 433MHZ

ER400RS

Manufacturer Part NumberER400RS
DescriptionMODULE, RX, FM, 433MHZ
ManufacturerEASY RADIO
ER400RS datasheet
 


Specifications of ER400RS

External Depth4mmExternal Length / Height14mm
External Width37mmFrequency433MHz
Operating Temperature Max65°COperating Temperature Min-20°C
Rf Sensitivity-105dBmRange250m
1
Page 1
2
Page 2
3
Page 3
4
Page 4
5
Page 5
6
Page 6
7
Page 7
8
Page 8
9
Page 9
10
Page 10
11
12
13
14
15
Page 1/15

Download datasheet (119Kb)Embed
Next
LPRS Data Sheet
Easy -Radio ER400TS Transmitter, ER400RS Receiver & ER400TRS Transceiver
RS & TRS
The Easy-Radio ER400TS Transmitter, ER400RS Receiver and ER400TRS transceiver incorporate ‘Easy-
Radio’ technology to provide high performance, simple to use radio devices that can transfer data over a
range of up to 250 metres Line Of Sight (LOS). Furthermore ‘Easy-Radio’ technology allows frequency, data
rate and power output to be optimised for customer specific applications. The embedded software reduces
design and development time significantly.
The modules operate on the Pan-European 433 to 434MHz frequency band from a 3.6V supply and are
housed in space saving Single-In-Line (SIL) packages.
This data sheet describes the electrical and physical characteristics of the device. Operation of the Easy
Radio software and Timing Specifications are described later in this document. Further information is
available in the ‘Easy-Radio Demonstration Kit & Programming Software’ guide, which should be read in
conjunction with this data sheet.
Features
Crystal controlled synthesiser for frequency accuracy
High sensitivity receiver – typically -105dBm @ 38.4 Kbps
10mW Transmit Power
Low operating Voltage - 3.6 Volts – Single Lithium Cell
Low power consumption:
Receiver – 13mA
Transmitter – 23mA
User programmable:
Frequency of operation
Data Rate
Output Power
Description
The Easy-Radio ER400TS Transmitter, ER400RS Receiver and ER400TRS Transceiver utilise modern high
performance FM (FSK) transmitter and receiver ICs combined with a ‘flash’ programmable microprocessor
and an internal voltage regulator. They are suited for general-purpose remote control and data telemetry
applications within the European 433MHz ISM band.
The receiver is provided with a Received Signal Strength Indicator (RSSI ) output that can be optionally used
to measure received signal levels.
The modules connect to any 50-Ohm antenna such as a whip, helical or PCB loop.
Easy -Radio ER400TS, ER400RS & ER400TRS 1-1.doc
TS
Applications
Handheld Terminals
Environmental Sense & Control
Vehicle to Base Station Data Transfer
Remote Data Acquisition
Electronic Point of Sale equipment
Copyright LPRS 2003. March2004
Page 1 of 15

ER400RS Summary of contents

  • Page 1

    ... Output Power Description The Easy-Radio ER400TS Transmitter, ER400RS Receiver and ER400TRS Transceiver utilise modern high performance FM (FSK) transmitter and receiver ICs combined with a ‘flash’ programmable microprocessor and an internal voltage regulator. They are suited for general-purpose remote control and data telemetry applications within the European 433MHz ISM band ...

  • Page 2

    ... LPRS Data Sheet Easy -Radio ER400TS Transmitter, ER400RS Receiver & ER400TRS Transceiver ER400TS Transmitter Pin Description Pin Name Description Gnd RF ground. Connect to antenna ground (coaxial cable screen braid) and local ground plane. Internally connected to Pin Out 50 Ohm RF output. Connect to suitable antenna ...

  • Page 3

    ... Ohm antenna such as a whip, helical or PCB loop. Figure 3 Easy-Radio Receiver Block Diagram The ER400RS will receive and decode any Easy-Radio transmission within range and on the same frequency and deliver clean data to the host system for further processing. The Serial Data Output operates at programmable standard Baud Rates (default/typical 19,200Baud). ...

  • Page 4

    ... RS232 signal lines. See Application Circuit (Figure 11) for typical connection to an RS232 port via MAX232 interface IC. 3. Outputs will drive logic operating at 5 Volts handshaking mode, pin (7) of the ER400RS module should be connected directly to GND for data to be delivered. Application & Operation ER400TS & RS Figure 5 shows a typical system block diagram comprising hosts (user’ ...

  • Page 5

    ... LPRS Data Sheet Easy -Radio ER400TS Transmitter, ER400RS Receiver & ER400TRS Transceiver A. Host (A) sends serial data to the Easy-Radio Transmitter (A). The data must be continuously streamed at the selected baud rate and it fills an internal transmit buffer until either 128 bytes have been received or a gap of two bytes is detected. ...

  • Page 6

    ... LPRS Data Sheet Easy -Radio ER400TS Transmitter, ER400RS Receiver & ER400TRS Transceiver ER400TRS Transceiver Description The Easy-Radio 400 Transceiver is a complete sub-system that combines a high performance very low power RF transceiver, a microcontroller and a voltage regulator (Figure 7). . Figure 7 Easy-Radio Transceiver Block Diagram The Serial Data Input and Serial Data Output operate at the standard 19,200 Baud and the two handshake lines provide optional flow control to and from the host ...

  • Page 7

    ... LPRS Data Sheet Easy -Radio ER400TS Transmitter, ER400RS Receiver & ER400TRS Transceiver Pin Description Pin Name Description No 1 Antenna 50 Ohm RF input/output. Connect to suitable antenna Ground RF ground. Connect to antenna ground (coaxial cable screen braid) and local ground plane. Internally connected to other Ground pins. ...

  • Page 8

    ... LPRS Data Sheet Easy -Radio ER400TS Transmitter, ER400RS Receiver & ER400TRS Transceiver The host should check before sending data that the ‘Busy’ line is not high, as this would indicate that the transceiver is either transmitting or receiving data over the radio link. It should also pull the ‘Host Ready’ line low and check that no data appears on the Serial Data Output line. Detailed operation of interfacing, handshaking (including timing) is described in the ‘ ...

  • Page 9

    ... LPRS Data Sheet Easy -Radio ER400TS Transmitter, ER400RS Receiver & ER400TRS Transceiver Absolute Maximum Ratings ER400TS, ER400RS and ER400TRS Operating Temperature Range Storage Temperature Range Vcc All Other Pins (N.B.) Antenna Performance Data: ER400TS Transmitter Supply +5.0 Volt ± 5%, Temperature 20° C ...

  • Page 10

    ... LPRS Data Sheet Easy -Radio ER400TS Transmitter, ER400RS Receiver & ER400TRS Transceiver Performance Data: ER400RS Receiver Supply +5.0 Volt ± 5%, Temperature 20° Parameters Pin Supply Voltage (Vcc) Receive supply current Quiescent supply current Interface Levels Data Output Logic 1 Data Output Logic 0 ...

  • Page 11

    ... LPRS Data Sheet Easy -Radio ER400TS Transmitter, ER400RS Receiver & ER400TRS Transceiver Performance Data: ER400TRS transceiver Supply +5.0 Volt ± 5%, Temperature 20° Parameters Pin Supply Voltage (Vcc) Transmit supply current Receive supply current Quiescent supply current Interface Levels Data Output Logic 1 ...

  • Page 12

    ... LPRS Data Sheet Easy -Radio ER400TS Transmitter, ER400RS Receiver & ER400TRS Transceiver Easy -Radio Configuration Command Set The programming software sends ‘text messages’ to the modules and this action can be performed by the terminal software or User’s own PIC using the following list of commands: ...

  • Page 13

    ... Article I. 100n Host Ready Tied Low Compatibility The ER400TS, ER400RS & ER400TRS use crystal controlled synthesisers to accurately define transmit and receive frequencies incorporating RS232 protocols, and so should not be used in connection with Non-Easy Radio RF modules. Encoding/Decoding Easy-Radio technology allows the transport of simple encoder/decoder code formats or more sophisticated schemes. Please contact sales/applications for further technical advice. Easy -Radio ER400TS, ER400RS & ...

  • Page 14

    ... LPRS Data Sheet Easy -Radio ER400TS Transmitter, ER400RS Receiver & ER400TRS Transceiver PCB Layout The Ground (0 Volt) pins of the receiver should be connected to a substantial ground plane (large area of PCB copper) connected to 0 Volt suggested that a double sided PCB be used with one layer being the ground plane ...

  • Page 15

    ... LPRS Data Sheet Easy -Radio ER400TS Transmitter, ER400RS Receiver & ER400TRS Transceiver Product Order Codes Name Easy-Radio 400 Transmitter Easy-Radio 400 Receiver Easy-Radio 400 Transceiver Please contact the sales office for availability and other variants of the standard p roduct. The software interface can be customised to specific requirements for high volume applications. ...