1153-A

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.

Specifications

• Frequency Range: DC to 10 MHz
• Calibration Accuracy: ±1 count ± time-base stability
• Sensitivity: 0.1 V_p-p (30 mV_RMS) at 100 kΩ and 50 pF; 1.0 V_p-p (0.3 V_RMS) at 1 MΩ and 20 pF

Links

• Experimenter September 1965 describing Type 1153-A
• Experimenter August 1964 describing the Numerik Display

Photos

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  Note the spare lamps

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  Note the spare lamps

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