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., Ltd
Shenzhen KYL Communication Equipment Co
Co.,
KYL-500L Small Size RF Transceiver
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I: About KYL-500L
KYL-500L, the micro power wireless transceiver data module is designed for
wireless POS terminal. With small size, low power consumption as well as good
stability and reliability, it is also widely used for other embedded systems.
II. Technical parameter
PERFORMANCE
Power Output:
400mW
RF Line-of-sight Range:
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., Ltd
Shenzhen KYL Communication Equipment Co
Co.,
RF Effective Rate:
1200/2400/4800/9600/19200bps
Space Channel:
1MHz(Default),(12.5/25KHz Customization )
Bandwidth:
<25KHz
Receiver Sensitivity:
[email protected] (1% BER)
NETWORKING
Networking Topology:
Point-to-point, point-to-multipoint
COMPATIBILITY
KYL-200 and KYL-300 and KYL-500 series
POWER
Supply Voltage:
5V DC (3.3V-3.6V optional)
Transmit Current:
<350mA
Receive Current:
<25mA
Sleep current:
<1uA
GENERAL
Communication Mode:
Half-duplex
Frequency Band:
400-470MHz
Channel:
8(default),16/32/64(optional)
Interface:
TTL/UART
PHYSICAL PROPERTIES
49mm×23mm×10mm
Size:
(excluding antenna base and data pin)
Weight:
20g
Antenna Base:
50Ω,
Operating Temperature:
Industrial:-40℃~+80℃(TCXO)
Frequency Stability:
±2.5ppm Industrial
SMA
III. Applications of KYL-500L
Wireless Dish-ordering system;
Automatic Meter Reading (AMR)
Wireless POS terminal,
Wireless PDA
Wireless alarm and security systems
Wireless data transmission, automatic data collection system;
www.rf-data.com
[email protected]
[email protected]
., Ltd
Shenzhen KYL Communication Equipment Co
Co.,
IV. How to Use KYL-500L
KYL-500L is a TTL interface data transceiver. Here is its diagram.
1. Power supply
The factory setting is DC 5V.
2. Pin definition
Pin
Signal name
Function
level
1
GND
Ground of power supply
2
VCC
Remarks
No.
Power supply DC
5V
3
4
GND
5
TEST
Factory testing
6
-
For future development
TTL
7
SLP
Sleep control(TTL level)
TTL
8
RXD
Data receiving
TTL
9
TXD
Data transmitting
TTL
Low level valid
3. Setting of channel, interface, and data format
You can use KYLCOM.exe software to read or set the parameter, such as frequency,
channel on your computer.
4. Default frequency for each channel
Ch. No
Frequency
CH. No..
Frequency
Ch. No.
Frequency
Ch. No.
Frequency
1
429.0325MHZ
2
430.0325MHZ
3
431.0325MHZ
4
432.0325MHZ
5
433.0325MHZ
6
434.0325MHZ
7
435.0325MHZ
8
436.0325MHZ
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[email protected]
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., Ltd
Shenzhen KYL Communication Equipment Co
Co.,
5. Installation dimension (mm):
6. The Function-indicator light
a. The LED indicator turns red for 0.5S once power on.
b. The LED indicator turns green continually while receiving data.
c. The LED indicator turns red continuously when transmitting data.
d. If the module enters to sleep mode, LED indicator light is always dark.
7. Sleep function instruction:
In order to save power, KYL-500L transceivers support Sleep function. In sleep
mode, the current consumption is less than 1uA.
a. How to use the Sleep function:
The Pin7 ‘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 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-500L, the SLP (SLEEP) pin should
be definitely connected with 0 or ground.
b. Attentions about the use of sleep function:
When the sleep function enabled, any supply glitches, such as switch dithering,
fire striking or quick switching on and off may cause the transceiver moving to
wrong sleep mode.
Users can avoid this error by making a compulsive restoration once the CPU
delays 100ms after switching on
Sleep Timing Diagram:
www.rf-data.com
[email protected]
[email protected]
., Ltd
Shenzhen KYL Communication Equipment Co
Co.,
8. Attentions about data transmission
a. The delay time of conversion between transmitting and receiving is less than
1ms.
Timing diagram:
b. The delay time of transceivers between the first bit sent by TxD to the first
bit received by RxD is as follows
follows..
RF Date Rate
(bps)
1200
Delay
Ts(mS)
90
RF Date Rate
(bps)
9600
Delay
Ts(mS)
16
2400
48
19200
10
4800
30
Timing diagram:
www.rf-data.com
[email protected]
[email protected]
., Ltd
Shenzhen KYL Communication Equipment Co
Co.,
9. Antenna configuration:
We usually use A2 antenna for this module, if you have other requirements, please
specify before placing the order! Thanks!
Shenzhen KYL Communication Equipment Co., Ltd
4th Floor, Building 3, No. 335#, West Zhuguang Road, Xili, Nanshan District,
Shenzhen, Chinas
Fax: 86-755-83408785
Tel: 86-755-86643962
www.rf-data.com
[email protected]
[email protected]