Electronic Waveforms

The following images are waveforms taken from a B&K 1460 Oscilloscope

Above, a square wave. This signal was generated by a multivibrator circuit inside the scope for calibration.

Above, AGC (automatic gain control) keying pulse, generated by a B&K 1076 TV Analyst. These are often called saw-tooth waves. To me, they look like the teeth in a recoil clock escapement. The frequency of this signal is 15,750 Hz.


Above, vertical output drive signal. This is the signal that is fed to the vertical output tube. The frequency is 60 Hz. This signal was also produced by the B&K1076.

Above, the horizontal output drive signal. This signal is fed to the grid of the horizontal output tube in a television receiver. Note that the wave form has a point at the top, and a rounded trough at the bottom. The frequency of this signal is 15,750 Hz.

Above, waveform of a TV sync signal. This signal accompanies the video signal that is delivered to a TV receiver. The above shows a positive sync signal.

Above, an example of a negative sync signal. These signals were generated by the B&K 1076 for injecting directly into a receiver's sync separator circuit. The above photos show the 60 Hz part of the signal.

Above, the positive sync signal has been stretched out enough to see the 15,750 Hz horizontal part of the signal.

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