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The main
proposal with this demo is to give You a brief feeling how to read in data
"on line" from a, in this case, an inbuilt source generator. You can
switch channels on and off, make a time zooming to take a closer look at the
curves. With the pan functions, (in time and value direction), is it easy to
find the most interesting part of the curves.
Normally
values are entered into the program through some form of communication,
(network, serial port, etc).
To test the
function of this demo, start the compiled program 'TGTrend_Demo2.exe'. The signal are
there instantly.
The demo program consist of 6 different parts.
The main
part of course is the Graph on the left side. On this demo You find a group box
just under the menu. There You find a selector to set up how many channels You
will use in the program. This can be changed when running. How many channels is
depending how muck memory You have free in the computer, etc.
On the
right side of the Graph You find a group box for the Channel setup, and setup
for the corresponding Signal generator. Those group boxes can be hidden by
selecting from the menu.
Under the
Graph You find a group box containing scrollbars for setting the duration time
and for adjusting the end time in the graph. You can also select the updating
time and select if You want to have the updating "online".
Notice!
If You deselect the "Auto Update"- checkbox, values are still stored
into the graph, and can later on be shown. This happens, for example, when You
select "Auto Update".
When You select a channel, in the radio group,
You also get the corresponding values for the channel and also for the
RSG(Random Signal Generator). In the RSG Group box You set the wave form,
amplitude, time base, etc.
If You
have questions or suggestion regarding the TGTrend component or the demo
program, send them by email to gpsoft@ueab.net.