User's Manual

Reader RD21
Specifications A-3
Additional
Features
• RF antenna diversity.
• RF input signal level measurement. This information is attached to every received message.
• Programmable carrier threshold. Only input RF signals above this threshold are processed.
• Real time clock: a time stamp (Month/Day/Hour/Minute) can be added to every received
message.
• Reads data with or without error checking and encryption in hexadecimal or ASCII format.
• Received messages can be filtrated by time, RF signal level, system code, and data content.
• Stores over 50 kbytes of received messages in an internal buffer.
• Interfaces with a PC through the RS-232 or RS-485 interface. The RS-485 can be configured
for half-duplex (2 wires) or full-duplex (4 wires).
• Controls up to 15 Exciters EX21 through a dedicated RS-485 interface.
• Reader’s firmware can be upgraded using the serial interface.
Power Supply 12Vac ±10%, 50/60 Hz, or 14.8 to 18.2 Vdc.
Power
Consumption
Maximum 0.4 A ( Typical 0.3 A).
Environmental
Operation
Temperature
- 20°C to +55°C.
Storage
Temperature
- 40°C to +70°C.
Relative
Humidity
Maximum 95%, non-condensing at +40°C.
Mechanical • Dimensions (without UHF antennas)
Length: 250 ± 5 mm
Width: 210 ± 5 mm
Height: 100 ± 5 mm
• Weight: max 4 kg
Approvals Approved under I-ETS 300-220, I-ETS 300-330, RS-210 and FCC Part 15.