DTM certification is a prerequisite for all compatibility requirements regarding FDT technology. The certificate gives user the assurance that the DTM conforms strictly to the FDT standard.

A certificate is issued only when the DTM has successfully passed the tests made with the dtmINSPECTOR. This is a software tool for all types of DTM. It logs both the behaviour of the DTM and any deviations in functionality. The FDT Group issues a certificate only when the DTM has passed the test without error.

A similar certification process has been put in place for frame applications. The frame application may be an independent Windows program, or be integrated into a control or asset management system. It must be installed in this way in the operating system and is subject to the Windows criteria.