21
CLEARING THE GRAPHS
Displaying graphs on your screen is usually done by clicking on the individual channel buttons. In due time the
screen becomes loaded up with a lot of graph lines. Often when this happens you may want to clear all of the graph lines off
of the screen and start fresh. This can be done without the need to individually click on each of the channel buttons again.
Step 1: Click on the Clear All Graphs
icon on the toolbar. Clicking on this icon will erase all of the graph line
currently being displayed, but will not close out the file.
Step 2:
You are now free to
open up
any
new selection of graph lines
by clicking on their channel buttons.
If you have multiple files open at one time, such as when overlaying graphs, you can clear the graph lines on all of
the files at one time by double clicking on the Clear All Graphs icon. Once again, this will remove the graph lines on all of the
files, but will not close the files.
AVERAGING
A unique feature of the DataLink software is it’s ability to provide you with analytical tools. One of those tool is the
Averaging program. With this tool you can define a segment of your run and the software will display the average of all
samples taken on each channel during that period of time. For example, you might want to know what the average
longitudinal G-force (acceleration) was during the time the car was in first gear, or the average exhaust gas temperature of
each cylinder while in high gear, or the average engine RPM over the full course of the run. In addition to providing the
average, this tool will also show you the minimum and maximum values that were recorded during the specified time
segment, plus the numeric value at the present location of the screen cursor.
Step 1: Open a run file
.
Step 2:
Click on the channel button to
display the graph line
for the function you want to average, for example
the Engine RPM channel.
Step 3: Set your screen cursor
to the location that you want as the starting point of the averaging time frame.
Step 4:
On your keyboard
select the Start Bracket key
. This key has the
[
symbol on it. When you strike this key
a dotted vertical line is placed on the screen where your cursor is located.
Step 5: Move the screen cursor
to the location on the screen where you want to
end the averaging
time frame.
Step 6:
On your keyboard
select the End Bracket key
. This key has the
]
symbol on it. Another dotted line will
appear at the cursor location when you strike this key.
Step 7:
You now have the ability to
read the averaging
of any channel displayed on the screen. Directly above
the upper right hand corner of the screen is a large channel button. This is known as the Active Channel button.
To it’s right are four windows. These windows will display in order:
Window 1 (8563): The numeric value of the active channel at the cursor’s present location.
Window 2 (8775): The average of all samples recorded between the opening and closing brackets on the screen.
Window 3 (7072): The minimum value recorded within the bracketed area.
Window 4 (9605): The maximum value recorded within the bracketed area.
Step 8:
If you have other channels illuminated on your screen in addition to the active channel, you can display
the same averaging information for those channels by simply double clicking on the active channel button. It will
scroll through each of the illuminated channels.
Note that as you click on the active channel button to scroll
through the channels that the scale value at the left edge of the graph will change to display the scale for
whichever channel is being displayed. Remember, the graph line must be displayed on the screen for the active
channel button to recognize it.
