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3. Click the Baseline button in the Scan dialog box. Follow the on-screen

prompts to perform a 100%T baseline scan and a 0%T baseline scan.

Hot Tip

When performing the 0%T baseline collect, block the sample beam in the

transmission position with a blanking plate (a large solid object).

4. Once the baseline correction is complete, the Ordinate status display in the top

left corner of the dialog box will show 'Zero baseline' in red text.

5. Use the plastic clamp to hold the sample over the sphere transmission port.

Hot Tip

Use the sample mount ledge for added control over the positioning of your

sample. To use the ledge (see figure 16 ) slide it onto the posts fitted at either

the reflectance or transmission ports.

Figure 16. The sample mount ledge.

6. Click the Start button to perform the scan. The Save As dialog box will appear,

allowing the method to be saved as either a data file or a batch file. If the file

is saved as a batch file, all of the method parameters will be stored with the

scan.

Measurement calibration and corrections

Calibration

The detector calibration functions store separate sets of correction factors for the

instrument detectors and for the DRA detectors, so both require calibrations. The

instrument will recognize when an internal DRA has been connected to the instrument

and will restore any previous calibrations stored for the internal DRA.

Calibrations are performed using the Validate application, under the Calibration

menu.

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Mantis 5000 Specifiche Pagina 40