1192-B

The General Radio 1192-B Counter was introduced in Catalog 1973 and remained available through Catalog 1978.

The Type 1192-B is an electronic digital counter with an upper limit of 50 MHz, designed to measure frequency, period, frequency ratio, or time interval, or count events. The 1192-B is an updated version of the 1192 with its maximum frequency increased from 32 MHz to 50 MHz.

The instrument has two inputs − the A or main input is located on the front panel, the B input on the rear of the instrument. The A input features a three-step attenuator and a variable trigger control with maximum frequency of 50 MHz. The B input is used for ratio measurements, or the insertion of an external time base. This input has fixed trigger level and attenuation, and a 10 MHz frequency limit. Also located on the rear panel are start and stop inputs that complement the front panel start/stop push buttons for event counting. A front panel "test" push button is available for testing the logic, it does not check calibration. The time base calibration is accessible through a hole in the bottom of the case.

The counter was available in 5, 6, or 7 digit models. An optional accessory card buffered the display and made data outputs available at the rear panel.

The Type 1157-B 500 MHz Scaler was available to raise the counter frequency to 500 MHz. An optional cabinet housing both the 1157-B scaler and an 1192 counter was available as Type 1192-Z.

Specifications

• Frequency Measurements: DC to 50 MHz
• Period Resolution: 0.1 μs
• Time Interval Resolution: 0.1 μs
• Impedance: 50 Ω // 27 pF channel A; 10 kΩ // 20 pF channel B

Links

• Experimenter July 1969 describing Type 1192
• Burroughs B-5859 Nixie Tube Data 1968

Photos

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  100 kHz Test

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  Time-Base Calibration Adjustment

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  1192-Z