User's Manual

MPR-1710 - 8 - 6/19/2008
3 INSTALLATION & OPERATION GUIDELINES
For ease of explanation, MPR reader in this section refers to an RFID device that
consists of MPR-1710 and a high performance circular polarized antenna inside a
splash proof, UV stabilized housing case. The module should be installed on a heat
sink. Example of a heat sink could be an aluminum plate of size 8”x8”x0.1” exposed to
convection air flow. The screws at the bottom of module shall be used for mounting the
module on the heat sink.
3.1 GENERAL WIRING REQUIREMENTS
All the MPR reader wiring should be continuously shielded. AWID recommends using
#24 AWG up to #22 AWG, longer distances and higher current consumption on the
power supply line will require larger gauge wires.
TABLE 3.4-1: Data Line’s Wiring Requirement
WIRE SIZE #22 AWG (0.6 mm Dia.) #24 AWG (0.5 mm Dia.)
RS-232 50 ft (15 meters) 50 ft (15 meters)
3.2 WIRING DIAGRAMS
See section 2.2 for pin assignment for the RS-232 connector of MPR-1710.
The MPR RS-232 interface is a short distance serial interface, a full command set for
the standard serial interface is not necessary, therefore only transmit, receive and
ground wires are used. Sense input is an enable input, which is traditionally used to
activate the RF energy of the reader and to start the read functions.