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* [[Media:GR 1153-A Digital Frequency Meter Needs OCR 1965.pdf|General Radio 1153-A Digital Frequency Meter Manual 1965 (Needs OCR)]] | * [[Media:GR 1153-A Digital Frequency Meter Needs OCR 1965.pdf|General Radio 1153-A Digital Frequency Meter Manual 1965 (Needs OCR)]] | ||
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The '''General Radio 1153-A Digital Frequency Meter''' | The '''General Radio 1153-A Digital Frequency Meter''', a general-purpose frequency meter and event counter, was available in Catalog S 1965 only. | ||
The display consists of five "Numerik" incandescent readouts (see [[IND-0300]] and [[IND-1801]] for details). | |||
It is interesting to note that if a lamp fails, the counter will stop at that digit because the lamp is part of the counting circuit. | It is interesting to note that if a lamp fails, the counter will stop at that digit because the lamp is part of the counting circuit. | ||