Measurement Device test
The Measurement Device test verifies whether the spectrophotometer measures the same values for the same colors in a color bar when the measurement is repeated. The test compares the color measurements read from two separate measurements of the same page.
If the Measurement Device test fails, the accuracy of all other tests is not reliable. You might consider servicing or replacing the spectrophotometer or adjusting the preference settings for this test. You can also check the spectrophotometer using a diagnostic tool available from efi.com.