Shenzhen KYL Communication Equipment Co., Ltd
Fax: +86-755-83408785
www.rf-data.com
10
V. Network Application of KYL-300I
The communication channel of KYL-300I is half duplex, which is most suitable for
the communication mode of point to multi-point. Under this mode, one master
station must be set, and all of the rest are slave stations. A unique address is given
to each station. The coordination of communication is controlled by master station
that uses data frames containing address code to transmit data or command. Slave
station will receive all of the data and command and compare the received address
code with local address code. If they are different, the data will be deserted without
any response. If those address codes are the same, it means the data is sent to the
local. Slave station will make different responses according to the transmitted data
or command and send back the data of response. All these jobs must be performed
by upper protocol, and it is assured that there is only one transmitter-receiver in the
state of transmission in the communication network at any instant moment so as to
avoid the cross-interference.
KYL-300I can also be used for point-to-point communication with easier operation.
For the programming of serial port, all you have to do is to remember that its
communication mode is semi duplex while always observing the time sequence of
come-and-go for receiving and transmitting.
VI. Technical specification of KYL-300I
* Modulation mode: GFSK/FSK
* Working frequency: 400MHz~470MHz;
* Power supply: DC 5V (7.5V~12V is available, specify when placing the order);
* RF power:
≤
500mW, 600mW~1W is available;
* RF data rate: 1200/2400/4800/9600/19200bps (Set before delivery);
* Receive current: <28mA (TTL connect);
* Receive sensitivity: -123dBm (1200bps); -118dBm (9600bps);
* Transmitting current: <350mA;
* Sleep current: <20uA;
* Interface data format: 8E1/8N1/8O1;
* Working temperature: -40
~+
80
(industrial
standard)
* RF Line-of-sight Range: 2km (BER=10-5@9600bps);
3km (BER=10-5@1200bps)
；
* Size: 80mm*45mm*20mm (without antenna port).
