Find the Right Colby Instruments Product for You

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Delay (picoseconds)
Phase Shift (degrees)


Our Flagship Product

PDL-100A Series

  • Precision resolution to 0.5 ps per step
  • Maximum delay to 100.0 nsPhase shift 0.18˚ per 1 GHz
  • Signal input bandwidth DC to 18.0 GHz

Need More Delay? Customize it

CPDL-100A

  • Custom total delay to 100+ nsMaximum phase shift to 1.8˚ per 1 GHz
  • Custom resolution to 10 ps per step
  • Signal input bandwidth DC to 18.0 GHz

Dual Channel Differential Signal

PDL-200A Series

  • Maximum delay to 1.25 ns450˚ per 1 GHz signal in-series -or- dual channels up to 625.0 ps delayPhase shift 225˚ per 1 GHz signal each channel
  • Precision resolution to 0.5 ps per step
  • Signal input bandwidth DC to 18.0 GHz

Faster Switching Speeds

PDM Series

  • PIN diode switching technology
  • Resolution to 1 ps per step
  • Maximum delay to 5.120 ns1843.2˚ per 1 GHz signal phase shift
  • Signal input frequency range from 100 MHz to 3.0 GHz