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| Magnetrons |  |
CPI has Four Classes of Frequency Agile Magnetrons
Dither Magnetrons (D)
Output rf frequency varies periodically with a constant excursion, constant rate and a fixed-center frequency.
Tunable/Dither Magnetrons (T/D)
Output rf frequency varies periodically with a constant excursion and constant rate.The center frequency may be slowly tuned by hand or by external servomotor drive to any point within the tunable band.
Accutune(tm) Magnetrons (A)
Output rf frequency variations are determined by the waveshape of an externally generated, low level, voltage signal. With appropriate selection of a tuning waveshape, the Accutune magnetron combines the features of dither and tunable/dither magnetrons.
Accusweep(tm) Magnetrons (As)
Our best and most versatile tuning system. The output rf tuning rate and waveshape are infinitely variable within the design limits of each device. Customer inputs are typically any waveform from random to square wave and a + 5 volt command.
All CPI frequency-agile magnetrons provide a reference voltage output which is an accurate analog of the instantaneous rf output frequency. This signal greatly simplifies automatic frequency control of the system local oscillator frequency. The analog voltage is produced either by a self-generating, permanent magnet device requiring no external drive, or by a precision resolve or LVDT (Linear Voltage Displacement Transducer) acting in conjunction with one of CPI's solid-state frequency readout modules.
The Accutune and Accusweep magnetrons operate with a servo loop, feedback control, tuner drive and thereby utilize CPI's solid-state servo amplifier together with the frequency readout module.
