Main content

Home

Menu

View
Wiki Version:
We propose a capability to record level histogram of digitized signals for the sake of accurate amplitude calibration. Current ALMA correlators apply Van Vleck correction based on autocorrelation amplitude under assumption that quantization voltages in the digitizers are equally spaced. The real ALMA digitizers have 3-4% non-uniformity in 8 quantization voltage levels (CSV-2311). The non-uniformity can cause a systematic error of 9.6% at worst case or 2.1% optimized case in autocorrelation amplitude. By recording histogram of quantized level, we can estimate the quantization thresholds and then apply better accurate Van Vleck correction. The level histogram is also useful for digital power measurement instead of autocorrelation.
OSF does not support the use of Internet Explorer. For optimal performance, please switch to another browser.
Accept
This website relies on cookies to help provide a better user experience. By clicking Accept or continuing to use the site, you agree. For more information, see our Privacy Policy and information on cookie use.
Accept
×

Start managing your projects on the OSF today.

Free and easy to use, the Open Science Framework supports the entire research lifecycle: planning, execution, reporting, archiving, and discovery.

Copyright © 2011-2024 Center for Open Science | Terms of Use | Privacy Policy | Status | API
TOP Guidelines | Reproducibility Project: Psychology | Reproducibility Project: Cancer Biology