User's Manual

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.
3.1.2 Baseband unit:
→The unit receive data & command from PC via RS-232 interface,or send data &
results to PC ;
→The unit transmit control signals of tags to RF unit;
→The unit accept tag signals from RF unit, modulate signals and checkout;
→The unit can modify or query configure information of interrogator under the
control of PC command ;
3.1.3 Power unit:
→converts incoming alternating current (AC) to direct current (DC),out DC power
supply for the integrated equipment.
3.1.4 Data interface unit:
→Standard connector to connect the COM port ,network and power interface with
the rear panel of the integrated equipment ;
3.1.5 Case unit:
→The interrorgator case is made of molded-in ABS/PC. And the anti-static coating
was sprayed over the inner surface of the case;
3.2 Fundamental working principle
The complete RFID system is consist of XCRF-804 interrogator, antenna, tags,
and pc.
The baseband send the command to RF unit under the control of PC.RF unit
send signals to tags according to the tag type. When the tag is activated, it sends out
its number as well as other information .
The tags' response signals was amplified and shaped by the received-data