> For the complete documentation index, see [llms.txt](https://help.boomerang3.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.boomerang3.com/boomerang-3-domain-administrator-manual/admin/calibration/calibration-view.md). # Calibration view 1. To open the calibration view, go to Admin – Calibration. 2. Select the system group, division and group.

The parameters presented in the view are described in the table below.

Parameter	Description
Name	MP name shown under its group and object.
Manual upload time	The time when a certificate was uploaded manually.
Last Calibrated	The last time when a new MP adjustment value was saved.
Next Calibration	The time when the current calibration certificate will expire. If it already expired, then there is red exclamation sign before this timestamp.
PDF	If the MP has a certificate, then there is “View certificate” icon in this column. Click the icon to View certificate. Click the Approve icon to Approve certificate. The icon is not displayed if the certificate is already approved.
History	If the MP has a certificate, then there is “History” icon in this column. Click the icon to view the calibration history.
Upload	Click the “Upload” icon to upload a third-party certificate.

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