User's Manual

V750 RFID READER/WRITER, ANTENNA 2006-06, REV.C
OPERATION MANUAL
17 of 110
©OMRON CORPORATION 2006
1.2 Authorized Antennas
The antenna authorized by the FCC for use with the V750 Reader is described below.
IMPORTANT: No other antennas may be used with the V750 Reader without violating FCC regulations. It is
the responsibility of the user to comply with this requirement.
1.2.1 Antennas
Mono-static Circular Antenna (Options) Mono-static Liner Antenna (Options)
Model: V740-HS01CA Model: V740-HS01LA
Polarization: Circular Polarization: Liner
Gain: 6dBi max. Gain: 6dBi max.
Connector: N-Female Connector: N-Female
Cable length: 0.3m (0.98’) Cable length: 0.3m (0.98’)
1.2.2 Antenna Cables
The only cables authorized by the FCC for use with the V750 Reader are listed below:
Short cable
(Options)
Long cable
(Options)
Model: V740-A01-3.0M Model: V740-A01-10M
Length: 3.0m (9.8') Length: 10m (32.8')
Insertion Loss: 1.5 dB min. Insertion Loss: 1.5 dB min.
Cable Type: 3D-2V Cable Type: 5D-SFA
Connector: Reverse TNC to Type N Connector: Reverse TNC to Type N
Cable Diameter:5.5mm (0.22’’) Cable Diameter:7.6mm (0.30’’)
1.2.3 Setting the Reader RF Power
During initial installation, the reader must be properly configured to use the correct RF power to comply with
FCC regulations. DO NOT increase the power beyond the recommended power setting as calculated below.
The maximum RF power is determined from antenna gain and antenna cable loss using the formula:
Pmax = 36 dBm - Antenna Gain + Cable Loss
For example, if the antenna has a maximum gain of 6 dBi, and the cable has a minimum loss of 1.5 dB, the
maximum RF power that may be set is (36 - 6 + 1.5) = 31.5 dBm.
The Reader RF Power is set through the
Settings Page as described on Page18.
Note that in no case may the power be set higher than 32.0 dBm.
Recommended Power Settings
Antenna Type Short Cable/Long Cable
V740-HS01CA
V740-HS01LA
31.5 dBm