Owner manual

4 Operation Model 2020
4-22
Teledyne Analytical Instruments
4.6.3 Precautions
The Model 2020 allows a great deal of flexibility in choosing ranges
for automatic range switching. However, there are some pitfalls that are to
be avoided.
Ranges that work well together are:
• Ranges that have the same lower limits but upper limits that
differ by approximately an order of magnitude
• Ranges whose upper limits coincide with the lower limits of the
next higher range
• Ranges where there is a gap between the upper limit of the
range and the lower limit of the next higher range.
Range schemes that are to be avoided include:
• Ranges that overlap
• Ranges whose limits are entirely within the span of an adjoining
range.
Figure 4-2 illustrates these schemes graphically.
Figure 4-2: Examples of Autoranging Schemes
4.7 The Analyze Function
Normally, all of the functions automatically switch back to the Ana-
lyze function when they have completed their assigned operations. Pressing