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Datenblatt-Suchmaschine für elektronische Bauteile |
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Datenblatt-Suchmaschine für elektronische Bauteile |
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QFMT1-XXX Datenblatt(PDF) 3 Page - rfsolutions.ltd |
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QFMT1-XXX Datenblatt(HTML) 3 Page - rfsolutions.ltd |
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3 / 5 page  DS301-2 Oct 02 ©2000 REG No 277 4001, England. Page 3 QM Radio Transmitter Module QFMT1-XXX Connection Details Quasar UHF Radio Transmitter 12 345 Figure 1: Transmitter Pin Description: RF GND (pin 1) RF ground pin, internally connected to pin 4 (0V). This pin should ideally be connected to the nearest ground plane (e.g. coax braid, main PCB ground plane etc.) RF OUT (pin2) 50 Ω RF antenna output. To achieve best results the antenna impedance must match that of the module. VCC (pin 3) +Ve supply pin (3.0 to 9.0 volts). The module will generate RF when VCC is present. It is strongly recommended that a 100nF capacitor decouples the supply rail as close as possible to this pin. GND (pin 4) Supply and data ground connection, connected to pin 1. Data IN (pin 5) This input has an impedance of 47K Ω and should ideally be driven by a CMOS logic drive or compatible. The drive circuitry should be supplied with the same supply voltage as the Tx module. General Information The transmitter module implements a unique quasi AM/FM modulation scheme that puts the baseband data signal onto the RF carrier in two different ways. Firstly the carrier is shifted in frequency (typically 20 KHz) which generates the normal FSK spectrum, but simultaneously the RF carrier is also amplified thus yielding the ASK spectrum. Utilising the quasi AM/FM modulation technique with one of the compatible receivers will yield a highly efficient wireless link. Note: Because of the way Quasi Modulation operates the QMR1 and the QFMT1 will not work reliably in close proximity to each other. |
Ähnliche Teilenummer - QFMT1-XXX |
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Ähnliche Beschreibung - QFMT1-XXX |
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