2. Tutorial (Measuring Procedure)
PV6253-F4E016 7
2.6. Measuring procedure
(1) Perform warming-up for some 15 minutes after turning on the halogen lamp. Place the
reference (BK7) supplied in the same package on the stage, and bring the reflection spot
into focus while looking into the right-hand eyepiece.
(2) Click the [Background] button.
(3) Click the [Reference] button.
(4) Replace the reference with the sample, and bring the reflection spot into focus.
(5) Click any of the [Measure1] to [Measure10] buttons.
(6) The measurement result will be displayed on the Main Screen.
Note: If, in this condition, the message "Light intensity is too high" appears, click the menu
[Display], check [Light graph], and click the [Monitor] button.
Set (shorten) the sampling time in the sampling setup window of the [System Setup] menu,
so that the maximum value of the measured data comes into the neighborhood of 4000 on the
ordinate scale. Once the appropriate sampling time is set up, click [Display] to check the
reflectance graph, and restore the reflectance graph. Load the reference again on the stage,
and measure it by using the procedure of the [Background] and [Reference] buttons. Then,
replace the reference with the sample, and click any of the [Measure1] to [Measure10]
buttons.
Set the sampling time in such a manner that the quantity of light of the reference or sample,
whichever has a higher reflectance, will fully extend over the dynamic range (neighborhood
of 4000 when raw data is displayed).
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