BRL Test, Inc.

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CMC251 - Tektronix Frequency Counters


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  • Model: CMC251
  • Manufactured by: Tektronix
  • Max. Freq.: 1.3GHz
  • Freq. Resolution [Digits]: n/a
  • Measurements: Frequency, Period, Count totalization, Event, Pulse width, Voltage, Freq. range
  • Extra Specifications: Multifunction Counter

The CMC251 1.3 GHz Multifunction Counter measures the frequency of sine, square and triangle waves from 1 Hz to 1.3 GHz. The CMC251 also provides period, totalize and pulse width measurements. The counter has two input channels. Channel A is a standard 1 MΩ input for frequency measurements up to 100 MHz. Channel B is a 50 Ω terminated input for use in high-frequency systems. This counter is of interest to radio amateurs because of its ability to measure high-frequency systems. The temperature-compensated, crystal-controlled time base is stable to ±1 part per million per year

  • 1 Hz to 100 MHz (CH 1), 80 MHz to 1.3 GHz (CH 2)
  •  ±1 ppm Time Base
  • Period Average, Period, Frequency, Totalize Self-test
  •  Display Hold
  • Remote Start/Stop
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