The RF427 is a high-speed 900 MHz serial radio designed for unlicensed operation in Brazil. The RF427 is a frequency-hopping spread-spectrum radio with a configurable transmit-power output of 5 to 250 mW and user-selectable channel masking for improved RF interference immunity. This power-sipping, yet speedy, radio provides a cost-effective way to network data loggers.
The RF427 is part of the RF407 series of radios that includes:
|Type de radio||Frequency Hopping Spread Spectrum (FHSS)|
|Gamme de fréquence||905/920 MHz|
|Transmission Distance||-Note- Transmission distance assumes line-of-sight and appropriate antenna. Line-of-sight obstructions, RF interference, and antenna type will affect transmission distance.|
|Distance de transmission||Up to 1.61 km (1 mi) with omnidirectional antenna; up to 16.09 km (10 mi) with higher-gain directional antennas at ideal conditions|
|Puissance de sortie||5 to 250 mW (user-selectable)|
|Receiver Sensitivity||-101 dBm|
|Channel Capacity||Eight 25-channel hop sequences sharing 43 available channels|
|Vitesse de transmission||200 kbps|
|Link Throughput||105 kbps (maximum)|
|Connecteur d'antenne||Reverse Polarity SMA (RPSMA) jack|
|LEDs||Red TX/PWR and green RX|
|RS-232 Baud Rate||1200 to 115200 bps|
|CS I/O Modes||SDC 7, 8, 10, 11, and ME master|
|Température de fonctionnement||-40° to +70°C|
|Power||9 to 16 Vdc|
|Power Connector||2.5 mm DC power jack|
|Powered Over||CS I/O or barrel plug|
11.1 x 6.9 x 2.7 cm (4.4 x 2.7 x 1.1 in.)
Dimension are from the tip of the antenna connector to the other side of the case, and from the bottom of the case to the top of the DB9 connector jack screw. The width includes the thickness of the screw heads on the screws that hold the case together.
|Brazil (ANATEL)||08335-17-10644 (standards in Resolution No. 506)|
The RF427 is over-the-air compatible with other RF427-based products. The RF427 can only communicate wirelessly with other RF427 radios and other Campbell Scientific products that have the "-RF427" option.
|Data Logger||RS-232||CS I/O|
|Mixed-array data loggers||**|
*Use a 18663 null modem cable.
**It is possible to connect a mixed-array data logger (e.g., CR10, CR10X, CR23X, 21X, CR7) by using an SC932A or SC105 between the data logger's CS I/O port and the RF427's RS-232 port.