KYL KYL-300L-12

Shenzhen KYL Communication Equipment Co., Ltd
KYL-300L Low Power Wireless
Transceiver Data Module
Shenzhen KYL Communication Equipment Co., Ltd
Add: 3705-3707, Building C, Huangdu Square, Yitian Road, Futian District,
Shenzhen, Guangdong, China 518048
Tel: 86-755-83410815;
Email: [email protected]; [email protected]
Fax: 86-755-83408785
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Shenzhen KYL Communication Equipment Co., Ltd
I. About KYL-300L ....................................................................3
II. Features of KYL-300L ..........................................................3
III. Applications of KYL-300L.................................................. 4
IV. How to use KYL-300L..........................................................4
V. Networking Application of KYL-300L............................... 14
VI. Technical specification of KYL-300L................................ 14
VII. Description of type.............................................................. 15
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Before using our products, please read the user manual carefully. Any questions, feel
free to contact us at the above mentioned methods.
I: About KYL-300L
KYL-300L is a kind of low power wireless transceiver data module. With small size,
low power consumption as well as good stability and reliability, it is widely used as
wireless data transceiver in long-ranges, narrowband low power UHF wireless data
transmitters and receivers with channel spacing as low as 25 KHz.
II: Features of KYL-300L:
1. Low power transmission: 500mW (default), 600mW~1W (optional).
2. Carrier frequency: 433MHz (default), 400-470MHz, 868MHz, 915MHz
3. High anti- interference and Low BER (Bit Error Rate)
Based on GFSK modulation, high-efficiency forward error correction channel
encoding technology is used to ensure the data’s resistance against both transient
interference and random interference. The actual BER can be achieved to 10-5~ 10-6
when channel BER is 10-2.
4. Long Transmission Distance
Within the visible range, when the height of antenna is higher than 2m and the BER
is 10-3, the reliable transmission distance is 3000m @1200bps and
[email protected] respectively.
5. Transparent data transmission
Transparent data interface used in transceivers is to satisfy many standard and
nonstandard user protocols. Any false data generated in air can be filtrated
automatically (What has been received is exactly what has been transmitted).
6. Multi-channels
KYL-300L provides 8 channels, expandable for 16, 32 channels according to
requirements of users.
7. 2 ports with three connection methods
KYL-300L transceivers provide 2 ports with three connections, a UART interface
of TTL level, a non-standard RS-232 port and a non-standard RS-485 port. USB
interface port is also available. It can get the power for the PC directly
8. Big data buffer area
With optional interface baud rates: 1200/4800/9600/19200bps and 8N1/8E1/8O1
data format (decide by user), the transceiver can transmit unlimited data frames
with flexible user program.
Note: the RF data rate is only settled down before delivery; please specify our sales
your requirements when placing your orders.
9. Intelligent data control system and no other extra programs required
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Even for half duplex communication, no other excessive programs are required.
All RF system data transmission/reception and other On-the-Fly conversion and
control are performed by KYL-300L transceivers automatically.
10. Lower power consumption & nice sleep function
With +5V power, the receiving current is less than 25mA, the transmitting current
is less than 300mA, and the sleeping current is less than 20uA.
11. High reliability, small size and excellent performance
By using monolithic radio-frequency integrated circuit and single-chip MCU, the
transceivers have less peripheral circuits, high reliability, and low failure rate.
12. Various options for configurable antennas.
13. Watchdog monitor inside
Watchdog monitors the inner operation, so it can change the traditional product
structure and also improve the reliability of our modules.
14. With beautiful metal shell.
III: Application of KYL-300L:
KYL-300L the lower power wireless transceiver data module is suitable for:
KYL-200L is suitable for:
* Automatic Meter Reading (AMR);
* Wireless alarm and security systems;
* Building automation, security systems, wireless monitor, remote control and
access control system;
* Wireless data transmission, automatic data collection system;
* Radio modem can be used for Sports training & competition;
* Wireless dishes ordering;
* Wireless POS, PDA wireless smart terminal;
* RF module can be used for electronic bus station and intelligent traffics;
* RF transmitter, Wireless electronic display screen and Queuing machine;
* Wireless telemetry; charging for parking, parking lot;
* Wireless modem automobile inspection and four-wheel orientation;
* Wireless sensor, Industrial wireless remote control and air conditioning remote
* Data communication in the aspects of railway, oil field, dock and army.
* LED display in thruway and public place;
* Point to multi-point wireless network, wireless on-the-spot bus and automatic
data collection system
IV: How to use the KYL-300L
KYL-300L provide RS-232, RS-485 and UART/TTL level interface port for
direct connection with PC, RS485 devices, monolithic processors and other
UART components kinds of applications. The schematic diagram is shown below:
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1. Power supply
The factory setting is +5V (needing 7.5V-12V, please notify us when placing the
order). Using better ripple factor, KYL-300L transceivers can also share power
supply with other equipment. If possible, a voltage-stabilizing chip with 5V voltage
is much more recommended than Switch power supply. But if only switch power
supply is available, the jam caused by switch pulse should be avoided. In addition,
the reliable grounding must be used if there is other device in the system equipment.
In case of failing to connect with the ground, it can form its own grounding but
must be absolutely separated from the municipal electric supply.
2. Connection Definition with terminal
KYL-300L transceivers supply one 9-pin connector (JP1), their definitions and
connection methods with terminals are shown in Table 1.
Table 1: JP1 Pin Definitions and connection methods
Pin No. Signal Name Function
with terminal
Grounding of power supply
Power supply DC
Serial data input to the transceiver
the TTL
A of RS-485(TxD of RS-232)
B of RS-485(RxD of RS-232)
Sleep control (input)
Reset signal(input)
Sleep signal
pulse reset
3. The connection schematic diagram between computer and our RF module
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4. Setting of channel, interface, and data format
Before using KYL-300L, the user needs to make simple configuration to
determine the channel, interface mode and data format based on his own needs.
You can view or change the module's interface baud rate, channel and address
code, parameter setting or reading as per the testing software KYLCOM in the PC
(in products box). And the configuration is as follows:
i. Channel configuration:
Channel No.
Channel No.
Note: the frequency points corresponding to each channel can be adjusted
based on the user’s needs.
ii. The schematic diagram of setting the parameter as follows:
a. Connect the PC and module with RS232 data cable.
b. Open the “KYLCOM” PC software, then select “English” as follows:
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ⅲ. Click “open port” then will open a small window as the following picture, clients
will write the parameters in this column.
ⅳ. Click “read paras”.
“Read correct” show your connection between KYL module and PC is correct.
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If you want to change some technical parameter, you need do as follows.
ⅴ. User can change the parameter such as channel and interface rate and Parity mode
according to actual demand through the button of the left window. After writing the
parameters in the left catalogue, click the “write para”, then will show “write
correct”. So you have finished the process for changing technical parameter.
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Note: The RF data rate(Air Rate) can not be set by user, it is confirmed when
placing orders and set before delivery. So please confirm the RF data rate
when placing the order.
5. Installation dimension:
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6. The Function-indicator light
a. The LED indicator light will glitter red for 0.5S once after switched on.
b. The LED indicator light will glitter green continually while receiving data from
c. The LED indicator light will glitter red continuously when transmitting data into
air after receiving from COM.
d. If the module enables the sleep function, LED indicator light is always dark.
7. Supported protocol and Transmit capability
KYL-300L standard transceivers offer transparent protocol to support various
applications and protocols of users. If the user needs to decrease his cost or ease the
workload of terminal CPU, we can add other specific functions based on the
transparent protocol, such as addressing, data acquisition, command interpretation,
8. Sleep function instruction:
Due to reducing more consumption, KYL-300L transceivers support Sleep function.
In sleep mode, the current consumption is less than 20uA.
a. How to use the Sleep function:
The Pin8 ‘SLP’ in JP1 is the signal of sleep control. In high power level,
transceiver stays in working mode. In low power level (<0.5V), transceiver stays
in sleep mode. The SLP signal can convert transceiver from working to sleep
mode in 1ms after falling edge. If the Sleep signal arrives when the transceiver is
transmitting data, the module will enter sleep mode after finishing transmission.
From sleep mode to working, it takes the transceiver 1ms after rising edge.
To disable the opened sleep function of KYL-300L, the SLP (SLEEP) pin should
be definitely connected with 0 or ground.
b. Attentions about use of sleep function:
When the sleep function enabled, any supply glitches, such as switch dithering,
fire striking or quick switching on and off, could cause the transceiver to be
switched to the wrong sleep mode.
After switching on, users can avoid this error by making a compulsive
restoration once after the CPU delays 100ms.
Sleep Timing Diagram:
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8. The attentions of data transmission
a. The delay time (tc) of conversion between transmitting and receiving is less than
Timing diagram:
b. The delay time of transceivers between the first bit sent by TxD to the first
bit received by RxD.
Due to a data processing will be made on user’s data by KYL-300L transceiver
using FEC (Forward Error Correction) or other correction algorithm, when RxD
of a KYL-300L transceiver ‘A’ receives the data, then transmits it, the other one
transceiver ‘B’ will have a delay (ts) to receive and transmit by TxD. Different
RF data rate causes different delay time. Please see the specific delay time
RF Date Rate Delay
RF Date Rate Delay
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Timing diagram:
c. Error dealing procedure:
To enhance the reliability and stability of user’s systems, a verify bit or a Cyclic
Redundancy Check (CRC) mode is highly recommended to resent the wrong
information while using KYL-300L modules.
d. Large-number data transmission
In theory, when the interface data rate is faster than the RF data rate, KYL-300L
transceivers can sent unlimited-long data package, but any long packages more
than 120B are not recommended. The length of each package should be between
60~100B. We also recommend user to resent the wrong information using
Automatic Error Request Equipment (ARQ).
The analyzing as below:
What if the actual transmission BER (Bit Error Rate) is 10-4, 1 packet with 1KB
data, which is about 10-thousand bits, is sent, theoretically, at least 1 bit will be
received wrongly, then the 1KB information will never be received correctly.
But if we package the data into 10 packets with 100B for each, when all 10
packets are sent, there will be only 1 packet wrong according to this probability.
After that, resend this wrong packet using ARQ mode. So by resending one more
packet and the efficiency rate is reduced 10%, all data will be absolutely received
10. Antenna configuration:
Many appropriative antennas for low power RF modules are selected for meeting
different user antenna configurations. Please ask our Sales office for further
information about the antenna’s dimension and performance.
a. Helical SMA antennas
KYL-ANT-433-10-SMA: 100mm helical SMA antennas with high gain and low
cost, reach a long distance.
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KYL-ANT-433-3-SMA: 28mm SMA helical antenna with magnetic core, small size,
beautiful appearance (like the mobile phone antenna)
KYL-ANT-433-10-ZSMA: 100mm SMA helical antenna with folding joint, easy for
adjusting the direction and fixing.
b. Magnetic vehicle antenna
KYL-ANT-O433S-300H1.5-SMA: include magnetic antenna base, suitable for
equipment with metal shell, easy for fixing, effective to enhance the transmission
If the user has special demands on antennas, we can design and produce for them
V. Networking Application of KYL-300L
The communication channel of KYL-300L 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
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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-300L 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-300L
* Modulation mode: GFSK/FSK
* Working frequency: 400MHz~470MHz, 868MHz, 915MHz;
* Power supply: DC 5V (7.5V~12V informed 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 port: RS232/RS485/TTL/USB
* Interface data format: 8E1/8N1/8O1;
* Working humidity: 10%~90% relative humidity without condensation;
* Working temperature: -35~+75( industrial)
* RF Line-of-sight Range: 2000m([email protected]);
3000m([email protected]);
* Size: 80mm*45mm*19mm (without antenna port).
VII. Description of type
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Baud Rate