Hexin Technology HXJZ-878 User Manual
HXJZ-878 RF Data Radio
User’s Manual
HXJZ-878 RF Data Radio User’s Manual
About HXJZ-878
HXJZ-878, the Middle power wireless Radio, is used as the wireless data
transmission 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.
HXJZ-878 Feature
1. Power and receiving sensitivity
transmission power :5W, high receiving sensitivity: -123dbm.
2.
Low consumption
RX current: < 45mA, TX current:1.5A.
3. Modulation mode and Frequency
Modulation mode: GFSK, Frequency: 433MHz.
4.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~ 10-6can be achieved when channel bit error rate is 10-2.
5. Long transmission distance
when the antenna is higher than 8m ,Within the range of visibility, the reliable transmission distance is
（BER=10-3/1200bps）>20KM,（BER=10-3/9600bps）>10KM .
6. 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.
7. Multi-channel and speed
The standard HXJZ-878 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.
8. 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.
9. Intelligent data control and the user doesn’t need to prepare excessive programs
HXJZ-878 RF Data Radio User’s Manual
Even for semi duplex communication, the user doesn’t need to prepare excessive
programs, only
receiving/transmitting the data from the interface. HXJZ-878 will automatically complete the
other operations, such as transmission/receiving conversion in the air, control, etc.
10. 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.
11. Watchdog monitor
Watchdog monitors the inner function, so that change the traditional product structure and improve the
product reliability.
Main Parameters
1. Integration Parameters
Frequency range: 433MHZ
Channel interval: 25KHz
Frequency stabilization: +2.5PPM
Modulation mode: GFSK
RF Baud Rate: 1200/2400/4800/9600/19200/38400bps
Channel amount: 16
Antenna impedance: 50
Temperature: -20～85C
Working humidity : 10%～90% relative humidity without condensation
Weight: 200g
Size: 109mm*79mm*30mm (not include antenna and Data interface)
2. RX parameters:
Receive sensitivity: -123dbm
Next channel Power: ≥ 65dB
Modulate frequency: ≤ ±5.0KHz
3. TX parameters
RF Power： 5W
Neighbour channel Power： ≥ 65dB
Change time for receiving and sending：<10ms
4. RS-232/RS485 interface
Baud rate： 1200/2400/4800/9600/19200/38400bps
Data format：8N1
5. Power supply
9-15V DC, Standard: 12V
6. Power consumption
RX current：≤ 45mA
TX current：≤ 1.5A
Loading...