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PLT Datasheet(PDF) 4 Page - Radiometrix Ltd |
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PLT Datasheet(HTML) 4 Page - Radiometrix Ltd |
4 / 12 page Radiometrix Ltd PLT/PLR Data Sheet page 4 Figure 3: PLT footprint (top view) Pin description – PLT Pin Name Function 1a Vcc 3.1 – 15V power supply (@ 10mW) 4.1 – 15V power supply (@ 100mW) 2a 0V Ground 3a TXE Transmit Enable (active low) 4a TXD (link to 4b) 1b CMD Command mode select input 2b DATA Serial data out/in 3b FLOW Buffer full / busy output 4b Tout (link to 4a) Notes: 1. This pinout is very similar to the LMT radios but the serial data is on pin 2b (not 1b, which is here used as the command mode select input ) 2. Serial programming is by an inverted, CMOS logic level, 9600 baud RS232 datastream applied to the DATA pin (2b). 3. TXE has a 100kΩ pullup to Vcc 4. All pins are on an 0.1" grid 5. In the 'off' state a PIN switch open circuits the RF output pin. There are no 'off' state spuri. 6. 10mW unit will operate (with marginally reduced specifications and lower (6-8mW) output power) from a 3.0V rail. This must be well regulated and without noise or ripple, as in this state the unit's internal regulator no longer operates, and provides no supply rejection. 7. 100mW versions should not be run continuously from supply voltages > 9v 8. Do not exceed 3v logic levels on any input (4v for 100mW PLT units) Application circuit VCC (1a) GND (2a) (3a) TXD (4a) TXE T ransmit enable (active low) 3.1- 15V Antenna 2 3 TXD Vc c SGD 4 6 7 8 9 5 PLT2 (0-3V) Figure 4 : Typical RS232 interface for programming and data input |
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