Technology of Q 2500 colour TV set
Technology of Q 2500 colour TV set
Technology of Q 2500 colour TV set
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<strong>Technology</strong> <strong>of</strong> Q <strong>2500</strong> <strong>colour</strong> <strong>TV</strong> <strong>set</strong>range device the various functions are supportedby an LCD display.An 84 C 122 Philips microprocessor is used inthe remote control for the Q <strong>2500</strong> chassis(Control 10 for Loewe Systems and Control150 for Loewe.). This is an 8 bit standalonemicrocontroller, especially designed for use ininfrared remote controls. It has very little externalwiring and is able to control the transmitterdiode directly via an amplifying transistor.The modulator is incorporated into the IC.The processor is equipped with Loewe specifics<strong>of</strong>tware, which is mask programmed. Tooperate the Q <strong>2500</strong> chassis, commands areissued as RC 5 code, level 0.The operating commands are formed on thetransmitter keyboard by linking a Y input (Y4Y7) with an X input (X10 X17).Internal circuit 84C1229UB7ROM1k x 8ROM32 byteOscillator8X1114,3MHzosz f / 30HardwareModulator6WDTI 101PCA84C122ATOutputDriver21RSIGT15BatterycheckTO/IN<strong>TV</strong>SS20322322101114151918171612412134Y01 Y03 Y05 Y07 X11 X13 X15 X17Y00 Y02 Y04 Y06 X10 X12 X14 X16TO/INTDocument Q <strong>2500</strong> 63 © Loewe ProCollege
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