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3) Pin Definition (9 pin)
Pin No.
Signal
Name
Function
Level
Connection
with terminal
Remarks
1
GND
Grounding of power supply
Ground
2
VCC
Power supply DC
+3V ~5.5V
3
RxD/TTL
Data receiving
TTL
TxD
4
TxD/TTL
Data transmitting
TTL
RxD
5
SGND
Signal
6
A (TXD)
A of RS-485 (TxD of RS-232)
A(RxD)
7
B (RXD)
B of RS-485 (RxD of RS-232)
B(TxD)
8
SLEEP
Sleep control
TTL
Sleep signal
Low level
valid
9
TEST
Factory testing
LS-U2000 provide RS232, RS485, TTL or USB interface, please choose one when you place order.
4). The Function of LED indicator
a. The LED indicator flashes red for 0.5S when power supply on.
b. The LED indicator blinking blue when receiving data.
c. The LED indicator blinking Red when transmitting data.
d. The LED indicator keeps dark when the module is in sleep mode.
5). Parameter setting by our software
You can use our software Lensen.exe to read or set the parameter on computer. When you
connect RF module to PC by the testing cable, please remember to connect the DB9 as well as
USB port to computer.
Channel Configuration:
Each channel has its fixed frequency point which is per-written to MCU in factory. The
following is the configuration table for our common module. If you need other frequency
points, please tell our sales when you place order.
Channel No.
Frequency
Channel No.
Frequency
1
429.0325MHz
5
433.0325MHz
2
430.0325MHz
6
434.0325MHz
3
431.0325MHz
7
435.0325MHz
4
432.0325MHz
8
436.0325MHz