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Texas Instruments (TI) reserves the right to make changes to its products or services or to discontinue any product or service at any time without notice. TI provides customer assistance in various technical areas, but does not have full access to data concerning the use and applications of customer’s products. This manual describes the TIRIS Antenna Tuning Indicator (ATI), it provides the information that you will need in order to use the ATI to help tune your antenna and reader system to resonance. It is generally targeted at systems integrators or value added resellers. This document describes how to use the TIRIS Antenna Tuning Indicator (ATI) RI-ACC-ATI2 to tune antennas connected to a TIRIS Radio Frequency Module (RFM) RI-RFM-007B or RI-RFM-104B to resonance. The ATI is connected directly to the RF Module via the ATI connector on the RF Module (see Figure 1). It does not need a separate power supply. It can be connected to the RF Module even if the module is already connected to the Control board. The antenna is tuned by adjusting the resonance frequency of the antenna resonator circuit to 134.2 kHz. This can be done by changing the inductance of a tuning coil on the Radio Frequency Module (RI-RFM-007B or RI-RFM-104B), or by adjusting the capacitance of the resonance circuit on the RFM. Screwing the ferrite core of the coil in increases the inductance and screwing the core out decreases it.
Tags : radio frequency module, rf module, time without notice, resonance frequency, tuning coil, 007b, systems integrators, texas instruments ti, value added resellers, ferrite core, inductance, technical areas, capacitance, access to data, customer assistance
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