Parameter Name

Parameter Name

Parameters can be fault codes, inputs to, or specific outputs from, a vehicle control module.

The number of parameters selectable is limited to 32.

If the number of parameters available for customization exceeds the display area, the arrow buttons will be present, allowing display area scrolling.

The parameters declared to DataLogger are initially presented in alphabetical order.

Record Enabled

Record enabled is used to select which signals are to be recorded.

To select a signal for recording, touch the rectangle next to the signal name.

The record button will then be displayed.

Note: Additional rectangles may appear in other columns beside a selected signal name, indicating that the signal units may be changed or that the signal may be used as a trigger.

It should be noted that the more parameters you select to record the slower the PDU’s sample rate will be for each parameter e.g. The PDU may be able to monitor six parameters sampling each parameter twice a second. If the number of parameters is increased to twelve then the PDU would only be able to sample each parameter once per second, thus reducing its ability to capture fast faults; therefore it is recommended that the number of parameters is kept to a minimum.

Display Order

Parameters may be displayed on the waveform / bargraph screen in any order.

To set the parameter display order, press the required rectangle to create a numbered list.

Note: It is not necessary to display all of the parameters required to be recorded.

This has particular benefits if a parameter is to be used as a trigger but is not required to be displayed.

Trigger Action

For a detailed description of trigger action, refer to the Trigger Customisation description on the following page.

S.I. Units

Certain parameters can be measured / displayed in a number of different units eg temperature in °C or °F. If a rectangle appears around the displayed units in the ‘S.I.’ column then the units are selectable. Each time the rectangle is pressed, the selectable units scroll one step through the available options.

Other Features

To make parameter customization easier two icons have been introduced on to the bottom of the screen, these are:

This icon simply puts all of the signals selected for recording in alphabetical order irrespective of the language.

This icon will put all of the signals selected for recording at the top of the parameter list in numerical order.

After the parameter customization process is completed, return to the DataLogger main menu.

Default Customisation

To cancel all customisations, press the Customisation Reset icon. This will reset the customisation on all parameters to the default setting.

Trigger Customisation

DataLogger operates using a ‘rolling memory’.

When the Record icon is selected on the waveform display, PDU will start to record data, it will then continue to record data until its memory is full.

At this point it will continue recording by overriding the oldest data. This process will continue indefinitely or until the trigger is activated.

When the trigger is activated it performs a number of functions.

1. The first function is to place a zero time point within the stored data, this enables the trigger point to be easily accessible in later stages.
2. The second function is to set a timer, ensuring that the PDU will only continue recording for the time selected in ‘test-duration’.