User Manual

MTI RFID Reader Operation Manual PAGE: 8
43-RFID0900-E1-MANUAL
DATE: 18-04-2006
台揚科技股份有限公司
MICROELECTRONICS TECHNOLOGY INC.
ISO 9001 Certified
The RU-813 is factory calibrated for operation with the following type of antenna
and cable:
Item Specification
Operating Frequency 902-928MHz
Impedance 50Ohm
VSWR <1.3
Polarization Circular
Gain 6dBi
Front to back ratio 20dB
Axial ratio 3dB
Connector SMA Female
Dimension 140 x140 x30mm
The RU-813 is factory configured to operate with one Tx/Rx antenna connected
to Port Tx1/Rx1. However, the reader can operate with up to four Tx/Rx
antennas. If additional antennas are to be installed, use RF Command Suite to
select the number of antennas in figure 2.
Antenna RF Ports
One Tx /Rx Select Port : Tx 1 , Rx 1
Two Tx /RX Select Port : Tx 1 , Rx 1, Tx 2 , Rx 2
Three Tx /Rx Select Port : Tx 1 , Rx 1, Tx 2 , Rx 2, Tx 3 ,Rx 3
Four Tx/ Rx Select Port : Tx 1 , Rx 1, Tx 2 , Rx 2, Tx 3 ,Rx 3 ,Tx 4 , Rx 4
Figure 2 Antenna Port Selection Table
It is highly recommended that the antenna mounting be adjustable in order to
obtain the best performance from the system. However, the antennas must be
installed on a solid surface or frame to prevent damage or later misalignment.
Perform the following to install the antennas.
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