• Skip to main content
  • Skip to search
  • Skip to footer
Cadence Home
  • This search text may be transcribed, used, stored, or accessed by our third-party service providers per our Cookie Policy and Privacy Policy.

  1. Community Forums
  2. Custom IC Design
  3. significant digits in ADE assembler output expressions

Stats

  • Replies 1
  • Subscribers 131
  • Views 44
  • Members are here 0

significant digits in ADE assembler output expressions

an wx
an wx 1 hour ago

hi all, I'm drawing spectrums in ADE Assembler when I encountered a problem. I want to calculate FFT with start/stop time at 1989.955ns/22469.955ns. In Calculator and in "Measurement"-"Spectrum" panel, I can enter the specific start/stop time and draw the spectrum as expected; however, as I send the expression to ADE, the stop time becomes 2.246996E-6, resulting in large spectrum leakage. If I set start and stop time to1989.950ns/22469.950ns so that no truncation occurs, the spectrum is normal. So it seems that the values are automatically rounded to 6 decimal places in ADE assembler output? How can I solve it?

  • Cancel
  • Sign in to reply
  • Andrew Beckett
    Andrew Beckett 46 minutes ago

    You can control the output precision either using Options->Output Formatting or per-output using this column:

    I'm slightly surprised though that if you have expressions used in other expressions as dependencies, then I wouldn't expect the truncation to have occurred (It's really just a display thing). Maybe it's become a fixed number at some point - it's not entirely clear what your setup looks like.

    Andrew

    • Cancel
    • Vote Up 0 Vote Down
    • Sign in to reply
    • Cancel

Community Guidelines

The Cadence Design Communities support Cadence users and technologists interacting to exchange ideas, news, technical information, and best practices to solve problems and get the most from Cadence technology. The community is open to everyone, and to provide the most value, we require participants to follow our Community Guidelines that facilitate a quality exchange of ideas and information. By accessing, contributing, using or downloading any materials from the site, you agree to be bound by the full Community Guidelines.

© 2026 Cadence Design Systems, Inc. All Rights Reserved.

  • Terms of Use
  • Privacy
  • Cookie Policy
  • US Trademarks
  • Do Not Sell or Share My Personal Information