Open the file that you are interested in:

Modify -> Maths Channels

Select the file that is open by left clicking on its name

(the open file has a dot next to its name, and this dot and the name flash in bold)

Creating a Maths Channel example maximum speed

- Click on the Insert button

- Give the channel a name (eg Max_Speed)

- Enter the unit of measurement (eg km/h)

- Enter the zero and full scale (eg 0 & 250)

- Select the sampling rate (eg 10)

- Tick the speed box (if applicable)

- Enter the formula for the channel Eg. max(speed1name,speed2name)

- Click on the Test channel button to make sure that it will work

- If this is successful the message “Ok, the formule has been correctly interpreted” will appear in the box left of the button

- If it is unsuccessful an error message will appear

Hint: to make sure that you spell the channel names correctly double click on the channel name you wish to use in the identifier list

- To add more channels repeat the process

- To finish click on the OK button

Saving the Maths Channels

To save all the maths channels you have created previously, so that you can use them for other data, follow the instructions below

Back in the math window

- Click on the Export Set button

- Click on the Save in box to select the path

(recommend the default as shown, however you can save onto floppy disk if you have multiple PC's)

- Give the file a sensible name

- Click on the Save button

Creating Maths Channels For All Files

So far the set of maths channels you have created will only work in the file that you created them with

However, most of the time you will want these channels active every time you open/download any file

To do this you need to have saved the set of maths channels previously

If you have done this, go back to the maths channels window

If not follow the instructions previously

Make sure you are in the general window

Click on the Import set button

A warning message will appear but ignore it and click Yes

Select the file you are interested in

Click on the Open button

All the channels you previously created should appear in the window below

Tick the box next to Automatically insert into files

Tick the box next to Overwrite channels with the same name

Please note that this will only work with logger channels with the exact same names (Speed1 is a different channel to speed1 and Speed 1)