Determining The Signal-To-Noise Ratio - PerkinElmer Spectrum RX I Getting Started Manual

46 . Spectrum RX I Getting Started Guide

Determining the Signal-to-Noise Ratio

Although the Spectrum RX I will automatically perform a signal-to-noise ratio
during installation, the following section describes how to perform a manual
signal-to-noise ratio.
1. Make sure that the sample slide is empty, the Jacquinot stop (J-stop) is
removed and the lever for the alignment light is in the off position
(Figure 18).
Jacquinot Stop
Figure 18 Preparing the Sample Slide
shift
2. Press
This ensures that all the instrument parameters are set consistently.
scan
3. Press
The Spectrum RX I collects 16 background scans. Wait until the scan
status box reports READY before continuing.
scan
4. Press
The Spectrum RX I collects a single scan - the 100% line - and ratioes it
against the 16 background scans. The scan is stored in region X. Wait for
the scan to be completed before continuing.
restore setup
Backg
16
X
1
Alignment light off
.
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