Mantis 5000 Especificaciones descargar pdf (Pagina 30)

11. Alternately adjust mirrors M4 and M5 to centre the reference beam on both the

reference beam entrance and the reference ports such that the beam is not clipped by the

cente mount sample holder. The reference beam is now aligned.

12. Return to Step 7 of Installation

Error checks and diagnostic scans

The following section describes the procedures for a series of diagnostic scans or error

checking. The scans should be performed as part of the installation procedure and

routinely as part of a preventive maintenance program. The successful performance of the

diagnostic scans validates the operation of the accessory. The accessory optics should be

aligned and the electronics calibrated before proceeding with the diagnostic scans.

Hot Tip

It may be useful to construct a method file for each of these scan procedures. The

scan results should be retained for future use. If problems develop with the

accessory in the future, the diagnostic scans can be repeated with copies sent to

Varian for analysis. All diagnostic scans are set up and executed from the WinUV

Scan application.

In the normal spectrophotometer configuration, the front beam serves as the sample beam

and the rear beam is the reference beam. The DRA units all use the reverse beam

configuration, where the rear beam is the sample beam and the front beam path serves as

the reference beam. When a DRA is installed in the spectrophotometer, beam reversal is

applied automatically during system initialization. Therefore, the Beam mode—Double

checkbox should be selected.

Note

Parameters activated by a radio button that are not specifically mentioned in the

following procedure should be set to ’Off’ (e.g., the Signal-to-noise mode radio

button). These parameters will not affect the procedure.

1. Click the Windows Start button, then Programs, then Cary WinUV, and then Scan.

2. Click the Setup button.

3. From the Setup menu, set the following parameters to carry out the error checking.

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Mantis 5000 Especificaciones Pagina 30