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Shenzhen KYL Communication Equipment Co., Ltd
KYL-220 High speed Rate RF Transceiver Data Module
Shenzhen KYL Communication Equipment Co., Ltd
Add: 3705-3707, Building C, Huangdu Square (South of Shenzhen Exhibition Center),Yitian Road, Futian District, Shenzhen, Guangdong, China 518048 Tel: 86-755-82943662 Fax: 86-755-83408785 Skype KYL-Sunny Yahoo: KYL_Sunny@yahoo.com MSN: KYL-Sunny@hotmail.com Email: sales02@rf-data.com Web: www.rf-data.com
Fax: +86-755-83408785 sales02@rf-data.com www.rf-data.com
Shenzhen KYL Communication Equipment Co., Ltd
Before using our products, please read the user manual carefully. Any questions, please contact me at the above mentioned methods.
I: About KYL-220
KYL-220 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. Its channel spacing is as low as 25 KHz.
II: Features:
Technical specification of KYL-220 PERFORMANCE Power Output: RF Line-of-sight Range: RF Effective Rate: Space Channel: Bandwidth: Receiver Sensitivity: NETWORKING Networking Topology: COMPATIBILITY KYL-210 POWER Supply Voltage: Transmit Current: Receive Current: Sleep current: GENERAL Communication Mode: Frequency Band: Channel: Interface: PHYSICAL PROPERTIES Size: Weight: 40mmx22mmx6mm (excluding antenna base and data pin) 20g Half-duplex 400-470MHz, 868MHz, 915MHz 8(default),16/32/64(optional) USB 5V DC <25mA <20mA <20uA Point-to-point, point-to-multipoint 10mW 100m 1200/2400/4800/9600/19200/38400/100kbps
1MHz(Default), (12.5/25KHz/other Customization )
<25KHz -118dBm@1200bps (1% BER)
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Antenna Base: Operating Temperature: Frequency Stability: CERTIFICATIONS FCC/RoHS/CE 50, SMA ~+75 (TCXO)
commercial:-35 2.5ppm
III: Application of KYL-220:
* 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; * Data communication in the aspects of railway, oil field, dock and army. * LED display in thruway and public place;
IV: How to use the KYL-220
KYL-220 provide RS-232, RS-485 and UART/TTL level interface ports which can be direct connected with PC, RS485 devices, monolithic processors and other UART components. Please find the schematic diagram below:
1. Power supply The factory setting is +5V (needing 3.3V-3.6V, please notify us when placing the order). Using better ripple factor, KYL-220 transceivers can also share power supply with other equipment. If possible, a voltage-stabilizing chip with 5V voltage is much 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
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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-220 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 I/O 1 2 GND Vcc Grounding of power supply Power supply DC -
Level 3.1~5.5V
Remarks
RS232 TXD 3 TTL TXD
Data Transmission Data Transmission RS485 A Data Receiving Data Receiving RS485 B Signal Ground -
O(output) O(output) IO I(input) I(input) IO -
RS232 TTL RS232 TTL -
RS485 A RS232 RXD 4 TTL RXD RS485 B 5 6 DGND NC
Other power supply need customized Choose one of the three interface ports Choose one of the three interface ports
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-220, 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 5. Installation dimension:
6. The Function-indicator light a. The LED indicator light will turn red for 0.5S once switch on. b. The LED indicator light will turn green continually while receiving data from air. c. The LED indicator light will turn red continually when transmitting data into air after receiving from COM. d. If the module keeps sleep function, LED indicator light is always dark. 7. Supported protocol and Transmit capability KYL-220 standard transceivers offer transparent protocol to support various applications and protocols of users. If you need 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, etc. 8. Sleep function In order to reduce consumption, KYL-220 transceivers support sleep function. In sleep mode, the current consumption is less than 20uA. a. How to use sleep function:
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The Pin8 `SLP' in JP1 is the signal of sleep control. At high power level, transceiver stays in working mode. At 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 move to sleep mode after finishing transmission. From sleep moves to working, it takes the transceiver 1ms after rising edge. To disable the opened sleep function of KYL-220, the SLP (SLEEP) pin should be definitely connected with 0 or ground. b. Attentions about using sleep function: When the sleep function enabled, or any supply glitches, such as switch dithering, fire striking or quick switching on and off, may cause the transceiver switch to 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:
9. The attentions of data transmission a. The delay time (tc) of conversion between transmitting and receiving is less than 1ms. Timing diagram:
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b. The delay time of transceivers between the first bit sent by TxD to the first bit received by RxD. As data processing will be made on user's data by KYL-220 transceiver using FEC (Forward Error Correction) or other correction algorithm, when RxD of a KYL-200L 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 below: RF Date Rate (bps) 1200 2400 4800 Delay Ts(mS) 90 48 30 RF Date Rate (bps) 9600 19200 Delay Ts(mS) 16 10
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 prevent wrong information while using KYL-220 modules. d. Large-number data transmission
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In theory, when the interface data rate is faster than the RF data rate, KYL-220 transceivers can sent unlimited-long data package, but long packages more than 120B are not recommended. The length of each package should be between 60~100B. We also recommend our users to use Automatic Error Request Equipment (ARQ) to prevent wrong information. Reasons: 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 correctly. 10. Antenna configuration: Many appropriative antennas for low power RF modules are selected to meet 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.
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 distance.
For more kinds of antennas please go to our website: http://www.rf-data.com/Products_list_en.asp?classid=163 If you have special requirements on antennas, please specify, we can design and produce for you individually.
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Shenzhen KYL Communication Equipment Co., Ltd
V. Technical specification of KYL-220
* Modulation mode: GFSK/FSK * Working frequency: 400MHz~470MHz, 868MHz, 915MHz; * Power supply: DC 5V (3.1~5V informed when placing the order); * RF power: 10mW; * RF data rate: 1200/2400/4800/9600/1920038400/100Kbps; * Receive current: <20mA (TTL connect); * Receive sensitivity: -112dBm (1200bps); -108dBm (9600bps); * Transmitting current: <40mA; * Sleep current: <20uA; * Interface data format: 8E1/8N1/8O1; * Working temperature: -35~+75 (industrial) * RF Line-of-sight Range: 100m * Size: 40mm*22mm*6mm (without antenna port).
VII. Description of type
KYL-220-96
Manufacture Type Baud Rate 12:1200bps 24:2400bps 48:4800bps 96:9600bps 192:19200bps
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