Shenzhen Qianhai Lensen Technology LS-U2000 User manual

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LS-U2000 Radio Modem
2W Data Modem User Manual
Contact: Sunny
Whats APP: 86-13826574847
Skype: [e-mail]
Email: [e-mail]
Web：www.lensen-tech.com
Address: Xixiang, Baoan, Shenzhen, China
Manufacture: Shenzhen Qianhai Lensen Technology Co., Ltd

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1. General Introduction
LS-U2000 radio modem, designed with high efficiency FEC technology, good performance IC
and high speed MCU, is an excellent RF transceiver. Its power output is 2W, transmission
distance reaches 5km LOS. It has the advantage of small size, low power consumption, long
transmission distance, and also, strong anti-interference ability. LS-U2000 adopts transparent
transmission. Users don’t need any program knowledge.
2. Application Field
* AMR (Automatic Meter Reading)
* Wireless alarm and security systems
* Building automation, wireless monitoring, Access Control System;
* Wireless data transmission, automatic data collection system;
* Wireless POS, PDA wireless smart terminal;
* Wireless PTZ remote control, LED display;
* Industry automation, wireless telemetry, SCADA and so on.

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3. Technical specification
PERFORMANCE
Power Output:
2W
RF Line-of-sight Range:
7km@1200bps; 5km@9600bps
RF Effective Rate:
1200/2400/4800/9600/19200bps
Space Channel:
1MHz(Default), (12.5/25KHz customization )
Bandwidth:
<25KHz
Receiver Sensitivity:
-123dBm@1200bps, -118dbm(9600bps)
Data format:
8N1, 8E1, 8O1 (customize)
COMPATIBILITY
LS-UN10, LS-UN100, LS-U1000, LS-U2000, LS-UN5000 series
POWER
Supply Voltage:
5V DC or 12V customize
Transmit Current:
<600mA
Receive Current:
<45mA
Sleep current:
<20uA
GENERAL
Communication Mode:
Half-duplex
Frequency Band:
433MHz or 400MHz, or 450MHz, 470MHz
Frequency modulation
FSK/GFSK
Channel:
8(default),16/32/64(optional)
Interface:
TTL, RS232, RS485 (choose one)
PHYSICAL PROPERTIES
Size:
80mm×45mm×20mm
(excluding antenna base and data pin)
Weight:
300g
Antenna Base:
50Ω, SMA
Operating Temperature:
Industrial:-40℃~+85℃(TCXO)
Frequency Stability:
±2.5ppm Industrial

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4. How to Use It
1) Install Dimension
2) How to connect LS-U2000 with PC.
PC RF Module

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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

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6. Accessories
1) Antenna
2) Standard unit
a. LS-U2000 RF module 1pc
b. 9-PIN cable 1pc
c. rubber antenna 1pc (A3)
3) Other accessories you may be interested in
a. Power supply D.C.(5V, 3A)
b. RS232 program cable (for module with RS232 interface, use this to connect PC)
c. TTL program cable(for module with TTL interface, use this to connect PC)
d. RS232-RS485 converter (for module with RS485 interface, if you need to program module
on PC, you need a converter)
e. Higher gain antenna (to reach longer distance, you may consider to use high gain antenna)
f. Antenna connector (to extend antenna connector)
g. Arrest (to Prevent Lightning Strikes)
Note:
1.To keep good communication effects, please use power supply D.C. with lower ripple coefficient
whose max current need to be higher than 1.5*module’s max current. (Suggest 5V, 3A)
2. TTL, RS232, RS485 interface, please choose one when you place order.
3. Baud rate: interface rate are programmable by our software.Air rate is fixed; please indicate
when you place order.
4. When Pin8 is at low level, module will enter sleep mode. Under this mode, you cannot transmit
and receive data. When it is at high level or hang on for 150s, module will enter working
mode.(if you don’t need sleep function, please hang on PIN8)