TransCore AR2200, User Manual

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AR2200 RF Module User Guide
2-6
The primary manufactured frequency for the RF module is 912 MHz. For multiple RF
modules at one site, TransCore recommends using separate frequencies. TransCore
can provide units operating at multiple frequencies in the authorized band.
Preamplifier Line Driver Output
The preamplifier provides balanced low-impedance analog signal lines capable of
driving up to 1,000 ft (305 m) of cable. The preamplifier output incorporates
electrostatic discharge protection.
Note: Cable lengths over 500 ft (152.4 m) should be used with discretion; longer cables
are more susceptible to receiving electrical noise. For more information on cables and
cable lengths, refer to Chapter 6 of the AI1200 System Guide, "System Configuration."
Connections
The RF module is connected to the reader through cable attached to a 21-terminal
plug. The 21-terminal plug mates with a 21-terminal jack on the RF module interface
board. The plug, removable for servicing, uses captive-screw compression terminals.
The antenna coaxial cable connects to the RF module through an N-type connector on
the side of the RF subassembly.
Circuit Protection
The RF module interface board filters DC power received from the reader and protects
output circuitry from damage caused by transients on the cable between the reader and
RF module.
International Safety Standards
The RF module complies with United States and international RF safety standards as
specified by ANSI C95.1, IEC Pub 215 and 657, and NRPB.
1. The authorized frequency bands in the United States are 902–904 and 909.75–921.75
MHz. Contact TransCore if your application requires a different operating frequency.
Table 2-1 AR2200 RF Module Options and Operating Frequency Bands
RF Module Option Operating Frequency Band (MHz)
-01 865.0 to 869.5
-02 869.501 to 892.0
-03 892.001 to 908.5
-04 908.501 to 917.0
-05 917.001 to 930.0