Hexin Technology HXJZ-875 2km-10km Low Power RS-232/RS-485/TTL to RF Wireless Module - Manual (Page 5)

HXJZ-875 Low Power Wireless Module User’s Manual
its own grounding, but it must be absolutely separated from the municipal electric supply.
3) Saving power model
HXJZ-875 have three Saving power models: awaken from Hardware.
Awaken from Hardware:
When HXJZ-875 sleeping in this saving power model, the current is under 1mA.
Sleeping status: when you input low level at NO. 1 pin, it can sleep, don’t transmit or receive data.
Normal work status: when you input High level at NO. 1 pin, it turn into Normal work
status, and can transmit and receive data in 10ms.
HXJZ-875 parameters setting
HXJZ-875 have one interface of TTL、RS232、RS485, You must specify the interface when place an
order.
HXJZ-875 main parameters:
COM baud rate and verify, RF baud rate, Channel and frequency.
You can change these parameters by our software. When RF baud rate is faster than COM baud rate，One
frame Can transmit limitless data. When RF baud rate is not faster than COM baud rate ，One frame
Can transmit 255 bytes most. You can set the rate according your need.
The general Power supply is 5V DC.
Two HXJZ-875 communicate must have condition as follow:
1.Their channels (i.e. frequency) are the same.
2.Their RF rates are the same.
3.RF Module Com baud rate and verify is agree with its equipment or PC that it connects with.
Parameters default value:
Channel： 5
Interface speed rate：9600BPS
Interface verify：none
Speed rate in air：9600BPS
Channel and frequency list
Channel Frequency Channel Frequency
1 430.2000MHZ 9 458.5250MHZ
2 431.4288MHZ 10 459.1250MHZ
3 431.7360MHZ 11 459.5250MHZ
4 430.5072MHZ 12 460.1250MHZ
5 434.6940MHZ 13 460.5250MHZ
6 434.2332MHZ 14 461.1250MHZ
7 433.1580MHZ 15 461.5250MHZ
8 433.9260MHZ 16 462.1250MHZ