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2
Streaming Experiments
Most often, you will simply plug up to four Fourier
®
sensors into the front of the
StreamSmart 400, connect the StreamSmart 400 to the HP 39/40gs serial port,
and turn the switch on the right side to the
ON
position. When you start the
StreamSmart Aplet on the HP 39/40gs, you will find that you are immediately
collecting data from all of the sensors!
In streaming experiments, data is collected in real-time, with data literally “flowing”
across the screen in up to four separate streams. A streaming experiment is
illustrated conceptually in Figure 2-1 below. Each section of this chapter on
streaming experiments corresponds to one of the bubbles in the flow chart in the
figure.
Figure 2-1 Streaming experiment
As data streams across the screen, you can modify how you view the stream(s).
You can speed the streams up or slow them down simultaneously, as all four
streams share the same horizontal time axis. In addition, you can move each
stream up or down separately and zoom in or out on each stream vertically. Each
stream has its own vertical axis. Zooming and panning each stream separately in
the vertical dimension allows you to get just the right view on your experimental
data. You can also stop and restart the stream(s), and choose a discreet section of
the stream(s) to examine more closely. The speed at which you can collect data
and the flexibility you have in viewing the data are features unique to streaming
experiments performed with the HP MCL.
Table 2-1 describes what you see on screen and summarizes what you can do at
each step in a streaming experiment. Use this table for quick reference. The
following sections elaborate on the steps shown in the bubbles of the flow chart in
Figure 2-1. Refer to these sections for more detailed information on viewing,
selecting, and exporting data.
