# Distance ping2 0.3 m - 2 m

**URL:** <https://discuss.bluerobotics.com/t/distance-ping2-0-3-m-2-m/20152>\
**Category:** Ping Viewer\
**Tags:** ping\
**Created:** [April 20, 2025, 6:16pm UTC](https://discuss.bluerobotics.com/t/distance-ping2-0-3-m-2-m/20152 "2025-04-20T18:16:16Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![firda](https://avatars.discourse-cdn.com/v4/letter/f/bcef8e/32.png) [@firda](https://discuss.bluerobotics.com/u/firda)\
**Post date:** [April 20, 2025, 6:16pm UTC](https://discuss.bluerobotics.com/t/distance-ping2-0-3-m-2-m/20152/1 "2025-04-20T18:16:16Z")

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Hi, here I have tried using ping2 for horizontal distance testing with artificial pond media. I tested with a distance of 0.3 m to 2 m. And the results only at a distance of 0.3 m gave results that did not match (although the confidence level reached 90-100%). And in testing 0.4 m to 2 m gave an average error value of 0.49%. Why at a distance of 0.3 m the results did not match?, isn’t the minimum specification for that distance…

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**Author:** ![tony-white](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.bluerobotics.com/tony-white/32/13297_2.png) [@tony-white](https://discuss.bluerobotics.com/u/tony-white)\
**Post date:** [April 21, 2025, 4:02pm UTC](https://discuss.bluerobotics.com/t/distance-ping2-0-3-m-2-m/20152/2 "2025-04-21T16:02:32Z")

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Hi @firda -  
Typically the minimum range for the Ping single beam sonar can only be achieved in (large) open bodies of water. Testing in a tank leads to many reflections that can impact both the measurement error and the minimum range…