[Frecuencia]:425~450.5MHz
[Energía]:17dBm
[Distancia]:1.0km
[Interfaz]:RS232/RS485
[peso]:130±5g
[Introducción]:E90-DTU es un transceptor de datos inalámbrico con la función de procesamiento de datos digitales, modulación y demodulación digital, FEC, decisión suave equilibrada, etc. Proporciona una interfaz RS232/RS485 transparente, diferente con el transceptor FM analógico más el transceptor digital analógico MODEM.
Pin No. | Name | Function | Description |
---|---|---|---|
1 | DB-9 femal socket | RS-232 interface | Standard RS-232 interface |
2 | 3.81 connecting terminal | RS-485, power interface | Standard RS-485 and screwing interface |
3 | PWR-LED | Power indicator | Red when powered-on |
4 | TXD-LED | Transmitting indicator | Yellow, it flashes when transmitting data |
5 | RXD-LED | Receiving indicator | Yellow, it flashes when receiving data |
6 | DC power interface | Power interface | Straight hole, outer diameter: 5.5mm, inner diameter: 2.5mm |
7 | DIP switch | DIP switch | Working mode control |
8 | Antenna interface | SMA-K | External thread hole.L: 10mm. 50Ω resistance. |