TXL2 ETC2 [List of Unclassifed Manufacturers], TXL2 Datasheet
TXL2
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TXL2 Summary of contents
Page 1
... Synchronisation and framing words in the packet prevent the receiver outputting garbage in the absence of wanted RF signal or presence of interference. For multiple radio systems a TXL2/RXL2 can be set unique addresses. As well as having unique addresses, the TXL2/RXL2 allow operation on one of 5 pre-set frequencies in the 433MHz band ...
Page 2
... Radiometrix Ltd TXL2/RXL2 Data Sheet page 2 ...
Page 3
... The TXL2 provides transmit side of a simplex link, but provided no two devices attempt to transmit at one time, no further restrictions on data transmission need be made, as all transmit timing, valid data identification and datastream buffering is conducted by the unit. There is no 'transmit enable' pin. ...
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... Radiometrix Ltd TXL2/RXL2 Data Sheet page 4 ...
Page 5
... This unit is compatible with the TXL2 transmitter and the TDL2A transceiver simple addressing structure is included in the datastream. Units may be programmed onto one of eight addresses (all units are supplied set to default addr=0) and one of five RF channels (supplied default is channel=0, 433 ...
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... C to +70 C (Storage - +70 ° ° ° Compliant with ETSI EN 300 220-3 and EN 301 489-3 0.1" pitch SIL pins TXL2 RXL2 10dBm (10mW) ±1dB <4ms 16kbps bi-phase FSK +/-25KHz <-37dBm <-45dBm -107dBm for 1% BER ...
Page 7
... In idle (or 'preamble') state, a sequence of the longer cycles is sent (resembling an 8KHz tone). A packet comprises the Synchronising (or address) part, followed by the Data part, made up of twelve Groups (of four half cycles duration). Each Group encodes 2 data bits, so one byte is encoded by 4 Groups. Radiometrix Ltd Figure 6: transmitted and received data TXL2/RXL2 Data Sheet page 7 ...
Page 8
... It can be clearly seen that unlike raw radio modules, RXL2 does not output any noise when there is not any transmission. Data fed into the TXD input of a TXL2 transmitter appears at the RXD output of a RXL2 receiver within radio range in the original form it was fed. ...
Page 9
... BUSY pin (in RXL2) can be connected to one of the port pins which can generate an interrupt on low-to- high transition (e.g. RB0/INT pin in the PIC). This can be used to enter a receive sub-routine to download data received from remote TXL2. Therefore, the host does not need to wait in a loop for a packet. ...
Page 10
... PCB tracks/earth plane. The space around the antenna is as important as the antenna itself. A. Helical antenna C3 B. Loop antenna 16.4cm C. Whip antenna Ordering information The TXL2/RXL2 modems are manufactured in the following variants as standard: Part Number Frequency band TXL2-433-9 433.925 - 434.565 MHz RXL2-433-9 433.925 - 434.565 MHz TXL2-433-4 433 ...
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Copyright notice This product data sheet is the original work and copyrighted property of Radiometrix Ltd. Reproduction in whole or in part must give clear acknowledgement to the copyright owner. Limitation of liability The information furnished by Radiometrix Ltd is ...