Download Decimal arithmetic encoding V0.96 by Cowlishaw M. PDF

By Cowlishaw M.

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Calculation of a Q factor in a tuned radio frequency receiver is following: Where R is resonance, L is inductance, and C is capacitance. Tag Packaging The following types of RFID tag packaging are the most common: • Label (or smart label) A type of tag that is a flat, thin, flexible form using usually paper or very thin plastic. This type of packaging is used in RFID printers and applicators. • Ticket A flat, thin, flexible tag that is printed on paper without adhesive. • Card A flat, thin tag embedded in tough plastic for long life.

For a small price you can buy a basic power analyzer at any major retail department store. This tool determines that the power circuit is wired properly and grounded. Usually, this device has a series of three to four LEDs on it that, when plugged in, light up to indicate various conditions in the wiring. These conditions can include • Ground fault • Reverse neutral/hot • Reverse neutral/ground If more serious problems are suspected, a qualified electrician should be called in. He or she will bring a more advanced power analyzer that detects conditions such as • RMS voltage quality (sags, swells, flicker) • Impulsive voltage quality (transient voltage) • Harmonic voltage quality (harmonic voltage, harmonic current, harmonic power, inter-harmonic voltage, inter-harmonic current, harmonic phase angle, total harmonic voltage distortion, total inter-harmonic current distortion) Normally, this level of investigation is not required.

Interrogation Zone Considerations Special considerations should be addressed when setting up an RFID system with multiple interrogators that have overlapping interrogation zones. You can deal with these types of situations in several ways, such as using dense interrogator mode, interrogator synchronization, arbitration, and anticollision protocols. Some of these features are only available with Generation 2 devices. Dense Interrogator Mode Dense interrogator mode, also called dense reader mode, provides each interrogator the capability to operate at a slightly different frequency, which helps reduce the radio interference between interrogators.

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