The Switched Crystal Calibrator is a compact and fully built crystal calibrator or marker generator that provides 1 MHz, 100 KHz, 50 KHz, or 25 KHz marks through switch-selected outputs.
It is based on a high-accuracy 1 MHz crystal oscillator with a 5 ppm accuracy rate that provides three output frequencies as square waves.
Additionally, the calibrator features a variable output potentiom…