Mantis 5000 Especificaciones descargar pdf (Pagina 29)

• Check that that DRA is correctly locked down onto the instrument sample

compartment floor.

• If the DRA is correctly installed, and misalignment persists, contact your local

Varian service representative.

Place a piece of translucent paper in the sample beam path in front of M2. Turn the

adjustment screws of mirror M1 until the beam is centred on M2.

7. Place the translucent paper in the sample beam path in front of M3. Adjust M2 until

the beam is centreed on M3. Use the hex ball screw driver to loosen the locking nut on

M2. Use the flat blade screw driver to adjust M2 until the beam is centreed on M3.

8. Remove the cover to the accessory.

8. Make adjustments to mirror M3 using the translucent paper and one of the following

steps.

a. For reflectance measurements, slide the piece of translucent paper into the reflectance

port just behind the port opening. Examine the location of the sample beam relative to the

port. Check that the beam is centred, and falls completely within the port surface area. If

necessary, turn the adjustment screws of mirror M3 until the beam is centred on the

opening at the sample reflectance port. Hold the piece of translucent paper at the

transmission port just in front of the port opening. The beam should not overfill the

reflectance or clip the transmission port. The sample beam is now aligned.

b. For transmission measurements, hold the piece of translucent paper at the transmission

port just in front of the port opening. Turn the adjustment screws of mirror M3 until the

sample beam is centred on the transmission port. In this configuration, the sample beam

may overfill the reflectance port, but it should be tightly focused at the transmission port.

The sample beam is now aligned.

c. For centre mount use, load the translucent paper into one of the centre mount sample

holders and load the entire assembly into the sphere. Block the reference beam with a

plate and remove the reference port plug. View the centre mount holder through the

reference port. Turn the adjustment screws of mirror M3 until the beam is centred on the

sample area but does not clip the edges of the transmission port. When finished remove

the blocking plate.

9. Place the paper in the beam path in front of M5. Turn the adjustment screws of mirror

M4 until the reference beam is centred on M5.

10. Turn the adjustment screws of mirror M5 until the beam is centred on the reference

port. If using a centre mount sample holder, the reference beam should pass directly in

front of the centre mount device.

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Mantis 5000 Especificaciones Pagina 29