JZ878 RF Data Radio User`s Manual
Contents
1. Shenzhen Jizhuo technology CO LTD China TEL 86 755 83304518 http www jizhuo com 72. 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 lt 45mA TX current lt 1 5A Shenzhen Jizhuo technology CO LTD China TEL 86 755 83304518 http www jizhuo com 2 J Z878 RF Data Radio User s Manual J Z878 JZ878 consists of transmitter receiver base band Modem CPU RS 232 as follows Interface 10 JZ878 interface 1 Install orifice Install and fixation JZ878 2 User interface DB9 male Plug 3 Power Plug 2nd pin right pin is anode the left pin is cathode 40 Antenna interface N type TNC tie in female core screw thread outside impedance is 50Q O 50 TX RX indicator light Red light blink when TX Green light blink when RX 6 Power indicator light Green blink Shenzhen Jizhuo technology CO LTD China TEL 86 755 83304518 http www jizhuo com 3 J Z878 RF Data Radio User s Manual 2 JZ878 Interface define Li 6 T R 9 Data interface Power integerface 1 User interface J Z878 have one interface of TT L R S232 R S485 user can choose one Item no PIN Description User terminal Remarks 1 Null 2 TXD A Serial data transmitting end RXD A RS 485 3 RXD B Serial data receiving end TXD B RS 485 5 GND Ground DGND AGND 4 6 7 8 9 Null Itemno PIN Description Level Connected
3. J Z878 RF Data Radio User s Manual SHEN J IZHUO TECHNOLOGY CO LTD TTEL 86 755 83304518 805 Mobile 86 13632762381 FAX 86 755 83302824 Website http www jizhuo com Email doris jizhuo com MSN shenzhen jizhuoQ hotmail com Address NO 813 212BLD Tairan Tech Park Futian District Shenzhen China Post Code 518040 J Z878 RF Data Radio User s Manual Before using the product please carefully read the user s manual Any question in technical you can contact us Tel 86 755 81353151 83563518 About J Z878 JZ878 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 J Z878 Feature 1 Power and receiving sensitivity Transmission power 5W 10W high receiving sensitivity 123dbm 2 Low consumption RX current lt 45mA TX current 1 5A 3 Modulation mode and Frequency Modulation m
4. User terminal Remarks to the terminal 1 GND Ground 2 uv 12V DC 9 15V DC Standard 12V Remarks To avoid to connect the interface reverse and can not communicate please check and assure the voltage of 3 and 4 pin is existing by using multimeter If there is one pin that has the voltage another has not voltage which means the interface is connected reverse please change the connection wires between pin 3 and 4 20 Power supply JZ878 power supply is 9 15V DC Representative value is 12V DCT the current greater than 3A It can also share power supply with other equipment however the high quality power supply with desirable ripple factor should be selected In addition the reliable grounding must be used if there is other device in the system equipment In case of failure to connect with the earth it can form its own grounding but it must be absolutely separated from the Shenzhen Jizhuo technology CO LTD China TEL 86 755 83304518 http www jizhuo com 4 J Z878 RF Data Radio User s Manual municipal electric supply J Z878 parameters setting JZ878 have one interface of TTL RS232 RS485 You must specify the interface when you order J 2878 main parameters COM baud rate and verify RF baud rate Channel and frequency You can change these parameters by our RF Module 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 r
5. ate JOne frame Can transmit 255 bytes You can set the rate according your request Two JZ878 communications must have conditions as follows 1 Their channels i e Frequency is same 2 Their RF rates is same 3 RF Module Com baud rate and verify is agree with its equipment or PC that it connects with rChannel and Frequency Channel all Read 1 Write 2 Frequency430 2000MHZ rRF Baud Rate 1 Baud Rate 9600 Read 3 Write 4 COM Parameters Baud Rate 9600 Read 5 Write Verify NONE 1 Parameters default value Channel 1 Interface speed rate 9600BPS Interface verify None Speed rate in air 9600BPS Shenzhen Jizhuo technology CO LTD China TEL 86 755 83304518 http www jizhuo com 5 J Z878 RF Data Radio User s Manual 2 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 Technical specification of J Z878 Modulation mode GFSK Working frequency 430 470MHZ Transmission power 5W 10W Receiving sensitivity 123dBm Transmitting current 1 5A Receiving current 45mA Channel speed rate 1200 2400 4800 9600 19200 38400Bit s User can choose one I
6. hen Jizhuo technology CO LTD China TEL 86 755 83304518 http www jizhuo com 1 JZ878 RF Data Radio User s Manual 9 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 JZ878 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 M ain Parameters l Integration Parameters Frequency range 433MHZ Channel interval 25 KHz Frequency stabilization 2 5PPM Modulation mode GFSK RF Baud Rate 1200 2400 4800 9600 19200 38400bps Channel amount 16 Antenna impedance 509 Temperature 20 85 C 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 lt 5 0KHz 3 TX parameters RF Power 5W 10W Neighbor channel Power 65dB Change time for receiving and sending 10ms 4
7. nterface speed rate 1200 2400 4800 9600 19200 38400Bit s User can choose one Change time for receiving and sending 10ms Interface data format 8E1 8N1 801 Power supply 9 15V DC Working temperature 20 C 65 C Working humidity 10 90 relative humidity without condensation Dimension 109mm 79mm 30mm not include antenna and Data interface Attachable Communication with Model JZ871 JZ872 JZ873 JZ878 Shenzhen Jizhuo technology CO LTD China TEL 86 755 83304518 http www jizhuo com 6 Z878 RF Data Radio User s Manual M odel and name T TTL interface 2 232 interface 4 485 interface LLL 878A low rate 1200 4800bps 878B High rate 1200 38400bps Company Logo Trouble and solve ways NO Trouble Trouble causes and solve ways a Power Line 12V badness touch No shine of 1 b Power 12V is bad Indicator light c Power line 12V meet in reverse or diode of polarity protect is bad Radio is badness touch with PC terminal No transmit or No 2 b Radio with TTL RS232 RS485 not match terminal receive c RX frequency and TX frequency is not same a antenna not match or touch bad 3 Bit error rate High b RF baud rate is not right c Power supply ripple is too great Indicator light a Electromagnetism disturb in circumstance twinkling b Same frequency disturb in the circumstance
8. ode 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 10 can be achieved when channel bit error rate is 10 5 Long transmission distance when the antenna is higher than 8m Within the range of visibility the reliable transmission distance is O BER 10 3 1200bps gt 20KM BER 10 3 9600bps gt 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 lt 10ms 7 Multi channel and speed The standard JZ878 configuration provides 16 channels to meet the multiple communication combination modes 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 Shenz
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