ShenzhenKYLCommunicationEquipmentCo.,Ltd
can also share power supply with other equipments. If available, a
voltage-stabilizing chip with 3.6V voltage is more recommended as the power
supplier than Switch power. But if only switch power supply available, the jam
caused by switch pulse should be avoided. In addition, a reliable grounding must be
used if there are other devices in the system. 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-500L transceivers provide 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
Level
Connection
with terminal
Ground
Remarks
1
2
3
4
GND
Grounding of power supply
Power supply DC
Vcc
5V
RxD/TTL
TxD/TTL
Serial data input to the transceiver
TTL
TxD
RxD
Transmitted data out of theTTL
transceiver
Signal
5
6
7
8
SGND
A (TXD)
B (RXD)
SLEEP
A of RS-485(TxD of RS-232)
B of RS-485(RxD of RS-232)
A(RxD)
B(TxD)
Sleep control (input)
Reset signal(input)
TTL
TTL
Sleep signal
High
sleep
level
9
RESET
Negative
pulse reset
3. The connection schematic diagram between computer and our RF module
4
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sales02@rf-data.com
www.rf-data.com
KYL [ SHENZHEN KYL COMMUNICATION EQUIPMENT CO,LTD. ]
