Data Sheet

Proteus VSM
213
When the graph tab is in the foreground the menu's and icons change to show things we can do
with the graph. In particular, notice the new graph toolbar at the top of the application
The zoom commands can be found here and probably the most useful of these is the 'zoom to
area' icon. Click on this icon and then drag around a small area to localise the display. If you
repeat this you will soon be able to zoom in on a single I2C sequence.
Alternatively, you can hold the SHIFT button down and drag a box with the mouse
to zoom into the area inside the box.
Those familiar with the I2C protocol can then verify the raw data on the graph against the
sequencing we saw earlier on the protocol analyser.
Finally, you can take measurements with the graph as follows:
Left clicking the mouse on the graph window will place a (green) cursor on the graph.
Left dragging the mouse will allows you to position the cursor
Holding the CTRL key down and left clicking will place a (red) cursor.
Left dragging the mouse with the CTRL key down will allow you to position the (red)
cursor.
Data for each cursor and delta between them is shown on the display at the bottom of the
graph window.