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About hxjz-875, Hxjz-875 feature – Hexin Technology HXJZ-875 2km-10km Low Power RS-232/RS-485/TTL to RF Wireless Module User Manual

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HXJZ-875

Low Power

Wireless

Module

User’s Manual

About HXJZ-875

HXJZ-875, 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 can provide the USB power interface to be convenient for the mini computer and PC users if necessary.

HXJZ-875 Feature

1.Ultra low power transmission

Transmission power: 2W/1W, it can set according to the user’s request.

High receiving sensitivity: -123dbm.

2. Low power consumption

Transmission current<1.5A, receiving current<50mA, sleeping current < 1mA.

3. ISM frequency band, not requiring on application of frequency point

Carrier frequency of 402---470MHz, the default is 428~436MHZ.

4.Working frequency

The working frequency is -40℃~+85℃,the stability can be ±5PPM.

5. Interface

It can supply three kinds of interface: RS-TTL, RS-232, RS-485.

6. Power saving model:

It can supply one sleeping model: awaken from hardware.

7. 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.

8. Long transmission distance

Within the range of visibility, the reliable transmission distance can be 2km to 10km, when the antenna is

higher than 3km.

9. 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.

10. Multi-channel and speed

The standard HXJZ-875 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.

11. High speed wireless communication and large data buffer