Hexin Technology HXJZ-873 User Manual
HXJZ-873 Low Power Wireless Module
User’s Manual
HXJZ-873 Mini Power Wireless Module User’s Manual
About HXJZ-873
HXJZ-873, the Low power wireless module, is used as the wireless data transmission in short distance.
With the small size, weight and power consumption and good stability and reliability, it has the function
of bi-directional data sign transmission, test and control.
It is used for Wireless meter reading, such as water meter, electric meter and gas meter, parking meter,
intellective card, electronic weighing apparatus, meter for checking on work attendance, queue wireless meter,
building control, shipping company control, alarm system, intelligent equipment, Automatic data
collecting system; Industrial remote control and remote test building automation, safety and
security, powerhouse equipment wireless monitor, entrance control system, etc. It provide the USB power
interface to be convenient
for the mini computer and PC users if necessary.
HXJZ-873 Feature
1.Ultra low power transmission
Transmission power :500mW, high receiving sensitivity: -123dbm , size: 58mm*38mm*10 mm.
2. Low power consumption
Receiving current<45mA，transmission current<360mA，sleeping current < 1mA.
3. Saving power model
HXJZ-873 have three saving power models: awaken from Hardware, awaken from COM Port, awaken from
air
(the user need to ask for it before place an order).
4.IO attemper function
HXJZ-873 have 2 on-off input ports, 2 on-off output ports.
5. ISM frequency band, not requiring on application of f requency point
Carrier frequency of 433MHz，also capable of 868/915MHz.
6. High anti-interference and low BER (Bit error Rate)
Based on the GFSK modulation mode, it adopts the efficient communication protocol. The actual bit error
rate of 10-5 ~ 10-6 can be achieved when channel bit error rate is 10-2.
7. Long transmission distance
Within the range of visibility, the reliable transmission distance is (BER=103/1200bps)>3000m, (BER=10-3/9600bps)>2000m when the antenna height is greater than 3m (BER=103/9600bps).
8. Transparent data transmission
Transparent data interface is offered to suit any standard or nonstandard user protocol.
Any false data generated in the air can be filtrated automatically (What has been
received is exactly what has been transmitted). The charge time for receiving and sending <10ms.
9. Multi-channel and speed
The standard HXJZ-873 configuration provides 16 channels. to meet the multiple communication combination
mode of the users. It has baud rate to be chosen such as 1200bps、2400bps、4800bps、9600bps、19200bps、
38400bps. The wireless transmission rate is direct ratio with baud rate of interface to meet user’s equipment
requirement.
HXJZ-873 Mini Power Wireless Module User’s Manual
10. High speed wireless communication and large data buffer
When the speed rate in the air is quicker than interface’s, allowing to transmit unlimited length data at one
time, when the speed rate is slower or equal the interface’s, allowing the transmission of 255 Bytes long data
frames at one time for more flexible programming by users.
11. Intelligent data control and the user doesn’t need to prepare excessive programs
Even for semi duplex communication, the user doesn’t need to prepare excessive
programs, only receiving/transmitting the data from the interface. HXJZ-873 will automatically
complete the other operations, such as transmission/receiving conversion in the air, control, etc.
12. High reliability, small and light
Single chip radio- frequency integrated circuit and single chip MCU are used for
lessened peripheral circuits, high reliability, and low failure rate.
13. Watchdog monitor
Watchdog monitors the inner function, so that change the traditional product structure and
improve the product reliability.
Application of HXJZ-873
1.Appearance figure
Antenna socket
TX/RX indicator light
Red: TX , Green :RX
HXJZ-873 figure
User interface
2.HXJZ-873 interface definition
1) User’s interface
HXJZ-873 have one interface of TTL/RS232/RS485, user can choose one .
HXJZ-873 standard interface: when the antenna upward , the plastic socket gap
upward ，from left to right,1-9 pin in turn，as below figure:
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