About hxjz-878, Hxjz-878 feature – Hexin Technology HXJZ-878 10km-20km Middle Power RS-232/RS-485/TTL to RF Wireless Module User Manual
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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 F requency
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
-6
can 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