※※※CAUTION※※※ changes of modifications not expressly approved by the part responsible for compliance could void the user,s authority to operate the equipment。
XCRF-804 Interrogator User manual
Table of Contents 1 INTRODUCTION ..................................................... 2 2 PERFORMANCE PARAMETER ............................................ 5 2.1 GENERAL FEATURES ...................................................5 2.2 KEY FEATURE .......................................................5 2.3 TECHNICAL SPECIFICATION .............................................5 3 DESIGN FUNDAMENTALS .............................................. 6 3.1 DEVICE COMPOSE ................................
1 Introduction Thank you for using XCRF-804 interrogator made in Shenzhen Invengo Information Technology Co. Ltd. The interrogator can offer stability and reliability, while strictly following the EPC C1G2 recommendation..
XCRF-804 interrogator rear panel figure 2－2: figure 2－2 XCRF-804 interrogator rear panel figure 2－2 1－power switch; 2－RS-232 serial port, a physical interface between a computer and interrogator. The pin no, signal name and direction list as below. And the pin number is same as the number showed on DB9 connector. pin signal direction 2 RXD input 3 TXD output 5 Ground ground 3－Network Interface between a computer and interrogator.
XCRF-804 interrogator surface as figure2－3: figure 2－3 XCRF-804interrorgator surface 1－Power/Power Amplifier Indicator, two-colour light(green or red),green light indicates that the interrogator power on.
4－Decode /error, two-colour light(green or red),green lighting indicates that the interrogator read the tag data correctly. Red lighting indicates that the interrogator read tag data error; 5－communicate/connect, two-colour light(green or red),green lighting indicates that the interrogator is transmitting data to PC via Network Interface. Red lighting indicates that the interrogator established a network connection to PC successfullly; 2 Performance Parameter 2.
availability.maximal optional frequency number is 50pcs, frequency interval is 500KHz. ·Maximal reading distance up to 3.5~4.5m (11.48~14.75feet)（EIRP=36dBm,related to tags.） ·Write distance:Distances up to70％ of the read distance under the same condition. ·Multi-tag reading rate:≧60 pcs/second（it’s related to protocol） 3 Design fundamentals 3.1 Device compose As figure 4－1 and 4－2,XCRF-804 interrorgator has 5 parts:RF unit, baseband unit,power unit、data interface unit、case unit.
modulated carrier signals and transmit the signals by selected antenna. →The unit receive the back scatter signal from the RFID tag.After demodulating , amplifying ,comparing the signals ,the unit transmit the signals up to baseband unit. →The unit adjust output power and frequency of the antenna interface under the control of the baseband unit. 3.1.
circuit. Then the signals was send to baseband unit. The baseband will decode the received signal and then sends to PC via the communication interface of the baseband unit. The transmitting part of the RF unit will take the function of carrier generation, carrier modulation, amplification and emission. The receiving part of the RF unit will take the function of demodulation, amplify , compare etc. The FPGA part of baseband will take the code/decode function to tag data.
device; ·Can't read tag data: →Please check if the serial port or the network cable is connect to the interrogator correctly. If the cable is not joint firmly, interrogator can not get command from PC. →If the power amplifier signal lamp is light ,user need to check if the antenna SMA connector is screw down, or if the tag is fault. But if the power amplifier is not light, maybe the FPGA or MCU is fault. User should contact Invengo company to repair the device; 6 Other notice 6.
working . Invengo Information Technology Co. Ltd. Add:3/F,No.T2-B High-Tech Industrial Park South,Shenzhen. Zip Code:518057 Tel:0755-26711633 26711690 Fax:0755-26711693 http://www.yuanwanggu.com.cn http://www.ywgit.cn http://www.invengo.cn http://www.invengo.cc E-mail:sales@yuanwanggu.com.
