8 ms·

I think they're referring to the fact that it sends the pulse once per second. Could have been worded differently.

• PakG1 12y ago
  "each second" perhaps.
  • ttflee 12y ago
    Yes, it should have been translated as "once per second." Perhaps the "每秒一次"(once per second) was abbreviated to "每秒"(per second) somewhere in the news report.