CMC251 – Tektronix Frequency Counters
1.3GHz (Max. Freq.)

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

Specifications
Max. Freq.
1.3GHz

Freq. Resolution [Digits]
n/a

Measurements
Frequency, Period, Count totalization, Event, Pulse width, Voltage, Freq. range

More Details
Multifunction Counter