Vernier Spectro Pro - Manual (Page 16)

How To
18 Spectro Pro
In the Absorbance vs. Time mode, Experiment Length and Sampling
Rate can be selected. Click Setup on the toolbar, and select “Setup
Absorbance vs. Time” to access this feature.
In the Data Collection Sampling tab set the time units you want and the
sampling rate, i.e., the number of points collected each second (select
from 2, 1, .5, or .1 samples/second), minute (select from 60, 30, 6, 1, .25
samples/minute), or hour (select from 3600, 1800, 360, 60, 25
samples/hour). Sampling speed is a trade-off; too fast a speed yields
unwieldy data sets, while too slow a collection rate will miss important
experimental details. The maximum sampling speed depends on the
interface used and the number of input channels. Spectro Pro can collect
at most 30,000 points in one input channel.
Set the total time of data collection for Real Time Collect, Repeat and
Selected Events modes in the Data Collection Sampling tab. You can
also set the experiment length by changing the maximum time axis label
to the desired value.
If the column used for the
horizontal axis is not in
ascending or descending order
the graph will not be drawn
correctly when connecting
lines are enabled. This can
easily happen when the column
consists of prompted entries.
Choose Sort Data from the
Data menu, choose the column
by which to sort, click
ascending or descending as
desired, and click OK.
Set sampling speed
(data collection rate)
Set experiment length
Sort data