DECODE PRM4 Manuale d'uso - Pagina 19

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6 Technical specifications

Frequency range

Channel range and number

Transmit power

Modulation

Deviation

Occupied bandwidth

Frequency control

Frequency stability

Tx – Rx transition time

Error detection

Radio signaling rate

Receiver sensitivity

Channel occupation time

Range

Antenna connector

Antenna impedance

Serial interface

Serial connector DB9 DCE

Settings

Addressing scheme

Network configuration

Power supply

Power consumption

LED indications

Temperature range

Protection

Dimensions

Weight

Mounting

Radio modem PRM4 868MHz /User's manual V1.6 / 24.05.2011

ISM 868MHz, according to EN 300 220

25kHz, 80 channels

+13dBm, 20mW

2FSK with Gaussian filtration

±4kHz

25kHz

synthesizer

±2 ppm, -10ºC to +60ºC

≤1ms

CRC16

9600bps

better than -115dBm for 10 -3 BER

less than 1%

up to 2km with rod antenna, 16km with high gain

antenna

SMA female

50Ω

8 data, None parity, 1 stop bit

1200, 2400, 4800, 9600, 19200, 38400, 57600,

115200

RS-232: Tx, Rx, RTS, CTS, DTR, DSR, DCD, RI,

GND

RS-422: Tx+, Tx-, Rx+, Rx-, GND (2W/4W

selectable)

RS-485: Tx+, Tx-, Rx+, Rx-, GND (2W/4W

selectable)

Termination 120 Ohm for RS-422 and RS-485

selectable

through AT command set

65536 network addresses, 256 source addresses

Point-to-point, point-to-multipoint

8-32Vdc, 2W or battery option 3.3-12Vdc

<50mA

power supply, receive, transmit, error in channel

-20°C to +75°C, 0 to 95% RH (non condensing)

IP50

86 x 57 x 26 mm

110g

desktop or optional mounting for 35mm DIN rail