Jizhuo Technology EZ50B User manual

Jizhuo
Technology
SHENZHEN JIZHUO TECHNOLOGY CO., LTD
EZ50B Wireless Serial Radio Modem
User’s Manual
DVER 2.0
SHENZHEN JIZHUO TECHNOLOGY CO., LTD
TEL:[phone]-805 Mobile:86+13692285161
FAX: [phone] Website：http://www. jizhuo.com
Email:[email protected]
MSN:[email protected]
Address: NO.813,212BLD,Tairan Tech Park, Futian District Shenzhen China
Post Code：518040

JiZhuo
Technology EZ50B Wireless Serial Radio Modem
SHENZHEN JIZHUO TECHNOLOGY CO., LTD TEL：[phone] 83308451
Tech:0755-61319411 61319410 WEB: http://www.jizhuo.com
- 1-
EZ50B Wireless Serial Radio Modem
EZ50B data transmission module is
highly integrated micro-power half-duplex
wireless data transmission module, which use
"TI" high-performance RF chips and
high-speed microcontroller. Module provides
eight channels, and is equipped with
professional set-up software for the user to
change parameters, the module is transparent
transmission mode, no user-written set and
transmission procedures; you can transmit
data of any size. Module is small, the use of
voltage is wide, easy to use’s
Applications：Features
：
※Water, electricity, gas, heating
automatic meter reading system
※Fre
q
uenc
y
: 915MHz
※Wireless smart terminal PDA
※Wireless Queue System
※Wireless alarm and security system
※Smart Card
※Medical and electronic instrumentation
automation control
※Intelligent teaching equipment
※Intelligent home automation and
lighting control
※Wireless electronic scale
※Distance:1200m(1200Bps)
※Modulation:GFSK
※Transparent transmission
※Built-in watchdog to ensure
long-term reliable operation
※UART/TTL、RS232、RS485 Interface
※Convenient and flexible
※
A
lmost 512 b
y
tes data buffe
r
※Suitable for built-in installation

JiZhuo
Technology EZ50B Wireless Serial Radio Modem
SHENZHEN JIZHUO TECHNOLOGY CO., LTD TEL：[phone] 83308451
Tech:0755-61319411 61319410 WEB: http://www.jizhuo.com
- 2-
EZ50B wireless module, the use of ISM frequency band, without application frequency;
can be set to 8 communication channels, transmitting with high power , high receiver
sensitivity-121dbm, size 110mm * 85mm * 25mm (without antenna base) , a large number of
the billing system to use, very convenient for users to embedded wireless systems.
EZ50B the use of transparent transmission, in order to ensure the reliability and
stability of the user's system, plus the transmission checksum or CRC checksum error
detection mode, the error data retransmission. Transceiver module buffer of 512 bytes,
means that users can be in any state 512 bytes of data transfer , when the speed is greater
than the serial port is set to air rate, is theoretically unlimited length can send information
packets, but does not recommend users to send long data packets, the proposed length of
each packet data between 60 ~ 100B, generally not longer than the 120B, and recommended
user program using the ARQ mode, the error data packets retransmission. As follows:
If the actual error rate 10-4, users need to send 1KB about 10000bit information, if the
1KB data as a packet, sent at least theoretically, there will be a data error in the receiver,
then the 1KB data can never be received correctly. If it is divided into 10 packages, each
package 100B, then send 10 packets, the packets according to a probability of only 1 error,
the error in the form of a packet retransmission by ARQ 1, although it took more than 1
packet and the efficiency decreased by about 10%, but it can guarantee all the information is
correctly received.
EZ50B set parameters, the market is no longer used wireless modules used in the
traditional way to change the parameters of the jumper, causing long-term use because it
brings bad, options less dynamic change is not easy, a lot of inconvenience. EZ50B using the
serial port setting parameters easy and quick, easy set refers to the chip embedded in the
user program and operating software in the background. Meanwhile module
1200/2400/4800/9600/19200/38400bps six kinds of rate and 8 frequencies; provide UART /
TTL, RS232, RS485 three kinds of interfaces. Choice for users.

JiZhuo
Technology EZ50B Wireless Serial Radio Modem
SHENZHEN JIZHUO TECHNOLOGY CO., LTD TEL：[phone] 83308451
Tech:0755-61319411 61319410 WEB: http://www.jizhuo.com
- 3-
In the work on, EZ50B There are two ways of working, first for the conventional model,
which module is powered On, is in receive mode; you also can be sending data. The second is
sleep mode, that is, through the power module in a dormant state, it must be user-controlled
mode wake-up pin block, the module can send and receive data.
In the application of EZ50B module, the module uses a wide voltage range, but also
divided into two kinds of voltage, the first for the 5V power supply module, also known as
conventional module, the voltage of DC 4.5V -5.5V. users in the use of power to DC power
supply, the current must be greater than 200mA, but to choose a good power supply ripple.
Module pin definition
EZ50B module J1,J2 interfaces seat, detail as follows:
Item No Pin Specification User Terminal Remark
1 GND User GND User GND
J1 2 +5V User GND+ User GND+
1
N
ull
2 TXD TTL/RS232：
data transmit，
user equipment receiver
3 RXD TTL/RS232：
data receive，
user equipment transmit
4
N
ull
5 GND User Interface user equipment interface
6
N
ull
7
N
ull
J2
8、9
N
ull
Dimensions:

JiZhuo
Technology EZ50B Wireless Serial Radio Modem
SHENZHEN JIZHUO TECHNOLOGY CO., LTD TEL：[phone] 83308451
Tech:0755-61319411 61319410 WEB: http://www.jizhuo.com
- 4-
Appearance :

JiZhuo
Technology EZ50B Wireless Serial Radio Modem
SHENZHEN JIZHUO TECHNOLOGY CO., LTD TEL：[phone] 83308451
Tech:0755-61319411 61319410 WEB: http://www.jizhuo.com
- 5-
Installation Dimensions

JiZhuo
Technology EZ50B Wireless Serial Radio Modem
SHENZHEN JIZHUO TECHNOLOGY CO., LTD TEL：[phone] 83308451
Tech:0755-61319411 61319410 WEB: http://www.jizhuo.com
- 6-
Module with user equipment connection
Note: EZ50B did not have sleep in the state, the module of the SLE feet must be
vacant. In the sleep state when the module must be low, the module can send and receive
data.
Module with PC connection
Note: As EZ50B mode TTL interface module, so the PC must be added to connect the TTL to
RS232 converter, and converter must supply DC 5V of electricity.

JiZhuo
Technology EZ50B Wireless Serial Radio Modem
SHENZHEN JIZHUO TECHNOLOGY CO., LTD TEL：[phone] 83308451
Tech:0755-61319411 61319410 WEB: http://www.jizhuo.com
- 7-
software testing and parameters
A、EZ50B module connected to the PC and plug in the power, select the serial port used.
B、the radio detection, when the check to the station (the software will prompt detection
success), you can read or change a single parameter.
C、change parameters, when you select a parameter you want to set, after set up to read
again, to see the parameters of the module is not what you want.
Note: Two or more modules to communicate, then the frequency of the station modules and
air rate must be same.
Module to communicate with user equipment, the module's serial port parameters and
user settings must be consistent.

JiZhuo
Technology EZ50B Wireless Serial Radio Modem
SHENZHEN JIZHUO TECHNOLOGY CO., LTD TEL：[phone] 83308451
Tech:0755-61319411 61319410 WEB: http://www.jizhuo.com
- 8-
Communication Module
EZ50B wireless module with all the JZ87 series of models to communicate with each
other. Communication as long as you pay attention to the following:
A. select all the modules to the same channel.
B. you have the same communication module of the air rate.
C. the communication module, power supply, interface connection is connected.
Sleeping Mode
EZ50B divided into dormancy release version with no sleep. EZ50B sleep after the current is
10uA. EZ50B hibernation wake-up mode for the hardware. Wake is the fifth through the
interface hardware input pin high to sleep, wake-up input low.
If the user has a sleep function EZ50B, but do not want to use the hibernate feature,
available through J2 pin 9 to ground,then achieve.
Details as followings
Module in the working state to sleep state, it is necessary to SLE pin from low to high, if the
module is idle (no transmit / receive data) MCU to sleep within about 1ms; If you are in the
collection and development data, the data will be processed the frame side to sleep.
Module in sleep state to work state, it is necessary to SLE pin from high to low, MCU is
working on several ms to enter into the state, but in order to send data to the stability of the
user side should be more than 60ms latency available for data transmission.

JiZhuo
Technology EZ50B Wireless Serial Radio Modem
SHENZHEN JIZHUO TECHNOLOGY CO., LTD TEL：[phone] 83308451
Tech:0755-61319411 61319410 WEB: http://www.jizhuo.com
- 9-
Transform on transceiver and receiver
User devices receiving the data sent by the module, and then transferred to the data center
must have sent more than 1ms delay.
From Module A(transmit) to Module B(receive)
When the user is doing data transfer, the data must take into account the delay module,
in order to ensure the reliability of wireless transmission, the company added the module
FEC (forward error), and other encoding rules. Then from A to B module module, in the
middle of the transmission of data with different baud rates for the delay, in the following
table:
Air rate
(bps)
Time ts1
(ms)
Air Rate
(bps)
Time ts1
(ms)
38400 6 4800 39
19200 11 2400 76
9600 20 1200 120

JiZhuo
Technology EZ50B Wireless Serial Radio Modem
SHENZHEN JIZHUO TECHNOLOGY CO., LTD TEL：[phone] 83308451
Tech:0755-61319411 61319410 WEB: http://www.jizhuo.com
- 10-
EZ50B default parameter
Channel: First channel;
Serial port speed: 9600BPS
Serial port verification: Null
Airborne speed: 9600BPS
Technical specification of EZ50B
Technical specification
Modulation：GFSK
Frequency：915MHz
Transmit Power：TBD
Receiver sensitivity：-121dBm
Transmit Current：<75mA （TTL interface）
Receive Current：<30mA
Sleep Current：<10uA
Channel Rate：1200/2400/4800/9600/19200/38400Bit/s customized
Serial Port Rate：1200/2400/4800/9600/19200/38400Bit/s customized
Interface：UART/TTL RS232 RS485
Interface-data-format：8E1/8N1/8O1
Working Power：DC 4.5-5.5V
Working Temperature：-20℃～75℃(could be customized-40℃～85 )℃
Working humidity：10%～90% Relative humidity, no condensing
Size：110mm*85mm*25mm
Communicated Model：EZ50B/JZ872/JZ873/JZ874/JZ875/JZ878

Shipped Antenna (3dBi):

JiZhuo
Technology EZ50B Wireless Serial Radio Modem
SHENZHEN JIZHUO TECHNOLOGY CO., LTD TEL：[phone] 83308451
Tech:0755-61319411 61319410 WEB: http://www.jizhuo.com
- 12-
RF Exposure Information and Statement
This equipment complies with FCC RF radiation exposure limits set forth for an uncontrolled
environment.
This device complies with part 15 of the FCC rules. Operation is subject to the following two
conditions: (1) this device may not cause harmful interference, and (2) this device must accept any
interference received, including interference that may cause undesired operation.
NOTE: The manufacturer is not responsible for any radio or TV interference caused by
unauthorized modifications to this equipment. Such modifications could void the user’s authority
to operate the equipment.
NOTE: This equipment has been tested and found to comply with the limits for a Class B digital
device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable
protection against harmful interference in a residential installation. This equipment generates
uses and can radiate radio frequency energy and, if not installed and used in accordance with the
instructions, may cause harmful interference to radio communications. However, there is no
guarantee that interference will not occur in a particular installation. If this equipment does cause
harmful interference to radio or television reception, which can be determined by turning the
equipment off and on, the user is encouraged to try to correct the interference by one or more of
the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
-Connect the equipment into an outlet on a circuit different from that to which the receiver is
connected.
-Consult the dealer or an experienced radio/TV technician for help