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on waveforms. The 6R1A (and the 567 in general) is oriented toward sampling measurements. | on waveforms. The 6R1A (and the 567 in general) is oriented toward sampling measurements. | ||
The 6R1A is a counter and a comparator. To digitize analog voltages, the counter and comparator | The 6R1A is a counter and a comparator. To digitize analog voltages, the counter and comparator | ||
are used as a ramp-compare ADC. Card Q (Voltmeter) contains a | are used as a ramp-compare ADC. Card Q (Voltmeter) contains a 1MHz crystal oscillator. | ||
The counters (Card A) are made of flip-flops made of 2N1754 Germanium PNP transistors. | The counters (Card A) are made of flip-flops made of 2N1754 Germanium PNP transistors. | ||