Next, you need to set the calculation table for the sensor. It is especially needed for analogue sensors. Not all sensors send ready-made values that can be put into a report and understood by the end user. If the possibility to transform parameters is not provided with a device itself, this transformation is adjusted with the help of the Calculation Table or the Calculation Table Wizard.

gTrack system provides a possibility to differentiate sensor values by color. For this purpose in sensor properties it is possible to create intervals of values and choose their colors. There is also a possibility to accompany received digital values with text.

By default any sensor values (from -∞ to +∞) are displayed in black. Click the  button next to the scale to set the interval, select a color for it, and enter text. Note that values are set for each interval individually. Here are some peculiarities of setting intervals and choosing their color that could be useful:

• No value in the first field corresponds to -∞, in the second — to +∞;
  
• If you add an interval that intersects with an existing one and goes beyond its boundaries, the added interval will overwrite the existing interval;
  
• If you add an interval that intersects with an existing one and does not exceed its boundaries, the added interval will be inserted inside the existing one. In addition, both the intervals to which the existing one was divided will receive its text and color;
  
• You can select a color from a color picker or indicate its text value (in HEX) in the corresponding field.
  

Upon completion, all the set intervals of a chosen color along with their text info are shown on the scale. Each interval of the scale, its color, and text can be edited. To do so, click the corresponding interval on the scale and set the necessary parameters. To delete all the set intervals from the scale, click the Deletebutton to the right of it.

To enter intervals, select colors and specify text values, an alternative interface is also provided - in the form of a table. To switch to the table view, click the corresponding icon to the right of the scale. Click the same button to switch back to the scale. Note that the scale is automatically switched to the table view if more than 10 intervals were created.

  If a sensor sends values smaller than ones indicated in the first interval, such values are considered to be a part of the first interval.

Created intervals can be used in several cases:

• to visualize sensor state in the corresponding column of the Monitoring panel;
  
• to display multicolor tracks of unit movements;
  
• to show unit on the map according to the sensor state (if it is chosen to replace usual icons with the motion state signs);
  
• to quickly find the necessary information on sensors either in the unit tooltip or in the extended unit information;
  
• to visualize sensor state in the Nearest Units tool.
  

In the first three cases, on the Advanced tab of the Unit Properties of the unit, you must also specify a sensor for each case individually.

Additional sensor properties are the parameters that are peculiar to sensors of a strictly defined type:

The possibility of indicating filtration level is applicable to the following sensors: temperature sensor, engine revs sensor, voltage sensor, accelerometer, custom sensor, weight sensor. This option allows to apply smoothing algorithm to the sensor values. It is necessary to indicate the level of such smoothing (from 0 to 255) in the corresponding field. The filtration level is indicated individually for the sensors of such type.  The filtration level is only taken into account in reports (in tables and in charts while drawing smoothed lines).

For example, a custom digital sensor is used and 1 hour timeout has been indicated. The following data comes from the digital sensor: 1 (22:00), 1 (22:10), 1 (07:50), and 1 (08:00). If the timeout property had not been indicated, we would have one continuous interval (from 22:00 to 08:00). But using 1 hour timeout we receive the following situation: there is less than 1 hour between the 1st and 2nd message, so we have the first interval (from 22:00 to 22:10); between the 2nd and 3rd messages more than 1 hour passes, so this data is considered to be an invalid time period (from 22:10 to 07:50); and there is less than hour between the 3rd and 4th message, so we receive the second interval (from 07:50 to 08:00).

This option is designed for the motor operation sensors and is used for calculating fuel consumption mathematically.  If the ignition is off, the consumption is considered to be 0 l/h.