Altimeter Optical Delay Line

RFOptic’s high frequency Altimeter Optical Delay Line (ALT ODL) provides a high-performance solution for testing and calibration of radar altimeter systems.

RFOptic’s ODL unit is a compact solution, which provides superb signal performance and altitude simulation accuracy with an ultra-silent operation.

The ALT ODL can be configured to emulate a single altitude or up to 4,096 altitude steps.

The control and monitoring is done using a front panel, a navigation switch, and a LCD display, or via a USB connection using RFOptic’s configuration tool software. USB API is available for automated testing applications.

The Altimeter ODL offers very high accuracy up to 0.3ns for altitude steps under 6ft and > 0.1% above. The maximum altitude can reach 100,000 feet or 30Km in one enclosure.

Key Features

  • Altitude range 1 to 100,000 feet
  • Display Delay, Round-trip Distance, Range or Altitude
  • Customizable Steps
  • Supports frequencies from DC up to 6 GHz
  • Pulse and CW
  • Delay accuracy of 0.1%
  • Customized solution with short delivery time
  • High Dynamic Range
  • Excellent Phase Noise
  • USB API for automated tests


  • RF and Optical bypass
  • DC Power