2.54 23 20.32 W I R E L E S S Multichannel Transceiver MICROCONTROLLED EMBEDDED 7 CHANNELS Dimensions (mm) 33 13 XTR-7020 A8 30.48 3.5 P.N. 650200998G 10 XTR-7020 A-8 Descrizione Il transceiver multicanale XTR-7020A-8 rappresenta una ulteriore xxxx PIN 1 soluzione semplice ed economica al problema della 0.64 SQUARE ricetrasmissione dati a radiofrequenza. Il microprocessore integrato incapsula i dati entranti in logica TTL RS-232 in Top View pacchetti evitando all utente la necessit di scrivere routine software per la gestione della ricetrasmissione. L XTR-7020A-8 permette, tramite la programmazione di registri interni, la gestione della canalizzazione (7 canali sulla banda a 434MHz), della velocit dei dati seriali (9600-19200-38400- 57600-115200 bps, impostabili tramite pin di input) e della potenza RF irradiata (da -8 a +10 dBm). Le velocit seriali RS232 possono essere settate diversamente tra i due moduli del collegamento radio. La tecnica di invio dei dati store & forward consente una lunghezza massima dei pacchetti a 240 byte. Una sofisticata tecnica di trasmissione dei dati digitali unita al Pin-Out controllo della validit dei pacchetti permette di ottenere un raggio di copertura in aria libera pari a 300 metri. 1) RF GND 13) 485EN Come esempio applicativo, se in un collegamento si utilizzano le 2) Antenna 14) RSTX due seriali a 115200 bps e pacchetti di 64 byte, il tempo di latenza 3) RF GND 15) SP2 risulta di circa 15 msec. 9) GND 16) PWRDN 10) GND 17) Vcc Applicazioni 11) SP1 18) GND 12) RSRX Automazione industriale, Radio modems, Controllo accessi. Description The XTR-7020A-8 multichannel transceiver represent a simple and inespensive additional solution to the problem of wireless data transmission. The integrated microprocessor is accepting data entering from a TTL logic RS-232 line, creating packets, avoiding user to write sofware routines for the transmission management. The XTR-7020A-8 features, using programmable internal registers, channel setting (7 channels in the 868MHz License Free band), choice of serial data rate (9600-19200-38400-57600-115200 bps, chosen via module input pins) and choice of emitted RF power (from -8 to +10 dBm). RS232 serial speeds may be differently setted in the two modules of the radio link. The store and forward technique used to send the data allows 240 bytes of maximum data packet length. A sophisticated transmission technique used on the digital data, plus validation of received data, support a distance, in free air, of 300 meters. For example, if in a radio link the two serial speeds are setted at 115200 bps and packet length is 64 bytes, the latency time is about 15ms. Applications Industrial automation, Radio modems, Access control. AUREL S.p.A. Via Foro dei Tigli, 4 I 47015 Modigliana (FC) Italy Phone : +39-0546.941124 Fax : +39-0546.941660 W I R E L E S S Multichannel Transceiver MICROCONTROLLED EMBEDDED 7 CHANNELS Pin description Pin Description 1,3,9,10,18 GND Ground connection 2 ANT Antenna connection 11,15 SP1,SP2 Serial data rate selection pins. The selection must be done before to turn on the device. Jumper Serial speed S1 S2 S5=0 S5=1 Vcc GND 38400 115200 GND Vcc 19200 57600 Vcc Vcc 9600 9600 GND GND Test Mode: Teast Mode : data pseudonoise packets 12 RSRX TTL RS-232 receiver data output with 1 start bit (0V), 8 data bits and 1 stop bit (3V). The line must be keept at high logic voltage. 13 485EN This signal allows to drive an RS-232/RS-485 interface. It assumes high logic level in presence of data on RSTX line (pin 14). DATA DATA VALID 485EN485EN 14 RSTX TTL RS-232 transmitter data input with 1 start bit (0V), 8 data bits and 1 stop bit (3V). The line must be keept at high logic voltage. 16 PWRDN State of device. In Power Down mode the consumption is less than 10A. PWRDN STATE 0 ON 1 OFF 17 Vcc Positive supply voltage connection (3V). Ta = 25 C Technical Specification Characteristics Min Typ Max Unit Supply voltage 2.7 3.3 3.6 Vdc Supply current (RX mode) 26 mA Supply current (TX mode -8 dBm) 20 mA 31 Supply Current (TX mode 10 dBm) mA Supply current (Stand-by mode) 8 10 A Modulation type FSK dBm Receiver sensitivity (RF speed 115200 bps) -100 RF Power out (Tx) - 8 10 dBm (1) Input Bit rate bps 9600, 19200, 38400, 57600, 115200 m 300 Outdoor range (2) 869.19 MHz RF channels 869.87 (3) Number of channels 7 (1) Input signal has to be made up of 1 start bit, 8 data bit and 1 stop bit, no parity. (2) Default value. (3) At maximum power only the 6 central channels are utilizable. AUREL S.p.A. Via Foro dei Tigli, 4 I 47015 Modigliana (FC) Italy Phone : +39-0546.941124 Fax : +39-0546.941660