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Page 188
Thermo Scientific APEX User’s Guide
2) Press the Go button and navigate to page 3 of the system and tools menu.
System and Tools Page 3
3)
Navigate to the oscilloscope function.
Oscilloscope
4) Press the Go button and the start-up oscilloscope screen appears.
Understanding the Signal Path
When products or contaminants pass through the search head they generate a pair of
signals (known as the X-input signal and the R-input signal). These two signals are then
passed through a series of filters, where the signals are clipped, filtered, and analyzed,
as shown in the signal path diagram at the end of this section. You can use the
oscilloscope function to view the X and R signals (or the combined signal) at any point
along the signal path.
For example, in the start-up oscilloscope screen above, notice that there are two
(analog) signal channels, Channel 1 and Channel 2. (Note, however, that the
oscilloscope function also has two digital channels available for use.) Currently, neither
analog signal channel has been assigned but, in the example below, you will learn how
to assign the X-input signal to Channel 1 and the R-input signal to Channel 2.