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661: Difference between revisions
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but otherwise it is just a low-speed X-Y indicator. | but otherwise it is just a low-speed X-Y indicator. | ||
The total CRT accelerating voltage is 3kV and the vertical and horizontal amplifiers are | The total CRT accelerating voltage is 3kV and the vertical and horizontal amplifiers are | ||
relatively mild differential amplifiers made of [[6DJ8]] tubes. | relatively mild differential amplifiers made of [[6DJ8]] tubes. The vertical amplifier | ||
has a feedback loop around it that determines the gain. | |||
The amplitude/time calibrator is a Colpitts oscillator that uses a [[7119]] | |||
tube. | |||
The sophistication of the 661 is all in the plug-ins. | The sophistication of the 661 is all in the plug-ins. | ||
The signal from the calibration generator is available on the front panel and | The signal from the calibration generator is available on the front panel and | ||