INTRODUCTION The MoTeC data interpreter has been developed to allow users to make the most of the data acquisition facility supplied with MoTeC Engine Management Systems (ECU). The MoTeC Interpreter provides a collection of powerful tools that allows you to view the data in graphical formats to identify trends, establish high and low readings, view diagnostics, compare the effectiveness of different configurations and so on. MENU SCREENS This lists the menu options available to the user. To select an option press the up or down arrow keys to select the required file then press enter. To switch between colour and mono displays press F9. To exit the program press the 'Alt-X' keys together. SELECT FILE A list of files will be displayed based upon the current "File Type" selection. To load the file you wish to view press the up/down arrow or page up/down to highlight your selection then press enter. FILE UTILITY FUNCTIONS F1 Edit (Edit the file details) Press 1 to edit the User Name. Press 2 to edit the Car. Press 3 to edit the Engine Name. Press 4 to edit the Venue. Press 5 to edit the Comment F2 File Type (Define the "File Type" to be displayed) A menu will appear listing the cars and circuits for the log files in the current directory. Files that have no file details will appear as unknown in both the car and venue columns. To alter the current car or track selection arrow up/down or left/right to highlight your selection, then press enter. This facility is very useful if you are only interested in analysing data pertaining to a certain vehicle and/or circuit. F3 Copy (To copy a file) The file currently highlighted will be copied. You will be asked for a name for the new file and this must contain a maximum of eight letters or numbers and use no other characters. You can copy a file to another name or copy to or from a floppy disk for archival/transfer purposes. The list of available floppy disk drives is shown. F4 Delete (To delete a file) You will be asked twice whether you wish to delete the file currently highlighted. F5 Path (To change the file path) If you wish to interpret files located in another directory or drive press this key then type in the drive and directory details e.g. B: or C:\MOTEC\M8. To select a file arrow down to it and press enter. To exit the 'Select File' screen press Esc. GET LOG DATA UNLOAD ECU Unloads the log data present in the ECU's memory. As the process continues a status screen shows the percentage currently downloaded. At the completion of the download the log file is named using a time/date naming convention (96081203.LD was created on August 12, 1996 and was the fourth download for the day as the order starts at 00) the user details are inserted into the log file and the file is loaded as the one currently under review. If there was a problem with the download a window will pop up giving the nature of the problem. CLEAR ECU Clears the ECU's internal log memory. ANALYSE DATA MIXTURE MAPS - ENGINE OR CYLINDER Select "Mixture Maps" from the main menu. Mixture maps are a graphical representation of the oxygen content of the exhaust gas as measured by MoTeC's wideband Lambda. A lambda measurement of 1.00 is referred to as stoichiometric or the theoretical optimum air/fuel ratio of approximately 14.7:1 (roughly 14.7 kg of air is required to completely combust 1kg of petrol or gasoline). In the real world figures of about 90% of stoichiometric are required for maximum performance and up to 110% for optimum economy. i.e. 0.90 to 1.10 Lambda. The vertical axis shows the Lambda measurement and the horizontal axis shows engine rpm. The single points on the graph are the individual Lambda readings, whilst the lines are the average of all readings for that engine speed. M8 ECU's have the facility to log two Lambda sensors, whilst M4's and M48's handle one only, therefore on M8 log files you can, by using the 'Alt-F4' combination keypress, switch between combined and individual Lambda graphs. The throttle position (or MAP if turbocharged) to be displayed is selected by pressing the corresponding Function Key (F4 for fourth throttle/MAP site, etc). After your selections are made press enter and the "Mixture Map" will redraw itself. To exit the 'Engine Map' screen press Esc. RPM MAP This function provides a 3D histogram of engine rpm from the current file. The graph is based on Throttle Position or Manifold Pressure as appropriate. This is extremely useful in determining where the engine is spending most of its time and therefore identifying where the development effort should be targeted, as well as identifying maximum revs and the duration of time spent there. To exit the 'RPM Map' screen press Esc. GRAPH This function provides up to four graphs with up to two parameters per graph for the entire session or any part thereof. Additionally the complete set of logged values are displayed for the point of time corresponding with the current graph position. This function is useful in determining trends, peaks, troughs, anomalies and the relationships between a number of variables over a period of time. Lap Divisions If a lap marker has been used (A digital or switched input has been configured as a Lap Beacon) the graph will be shown in alternating blue/white vertical bands denoting each lap. By default the fastest lap will be the one displayed at startup. Left/right arrows The current cursor position is shown by a vertical line with cross hairs at the current parameter values. To move the cursor press the left/right arrow keys, to move quickly use the "Ctrl-left/right" arrow key. The values displayed in the right hand column relate to the current cursor position. Up/down arrows Provides a zoom in/zoom out facility which effectively halves/doubles the total time displayed F1 Commands Provides a list of commands available (as listed below) F2 Expand Expand the graph to show all data for the parameters selected. F3 From/to Manually select the start and finish points for the graph to draw. When pressed a window will appear prompting you to input the start time. Enter this, in seconds, then press enter and repeat for the finish time. The graph will redraw itself for the time span specified. F5 Select Select the parameters to graph. A representation of the graph will appear, press the up/down arrow to indicate the graph required then press enter to select which parameter to be viewed, the foreground and background colors, the size of the graph display and the name you wish to give it. To delete a graph press the delete key. F7 User Defined Graph Up to twenty user defined graphs are available. This function allows you to switch to any of them and then using the F5 key redefine them as you require. F8 Laps Allows you to switch between different laps. (Only if Lap Beacon was used). F9 Diagnostic Errors & Status Flags Toggle diagnostic errors on/off. If diagnostic errors or status flags are present in the logged data file then any occurrence will be shown by a bar at the top of the graph. By moving the cursor any position where errors are shown the name of the error/status will be displayed at the right of the screen. F10 Time or Distance Based Graph 'X' Axis (Pro Logging Only) Toggles the graph displayed from Time to Distance on the graph 'X' axis. Requires the use of a wheel speed sensor. To exit the 'Graph' screen press Esc. TEXT & EXPORT Shows data in a text format, with the ability to select various parameters. By pressing the F7 key data is exported to a comma delimited text file suitable for use by spreadsheet programs. STATISTICS Shows a range of information relating to the current log file. DIAGNOSTICS Shows a summary of Diagnostic Errors, giving the name, number of occurrences and total time. STATUS FLAGS Shows a summary of Status Flags, giving the name, number of occurrences and total time. TELEMETRY Telemetry allows the user to view the current engine operating parameters in either a dashboard or text format. The connection to the ECU can be via the MoTeC Interface Cable or via radio modems. Extremely useful in long distance racing or rallies where the team can monitor many parameters at a level of detail not possible by the driver alone. VIEW ECU DATA The ECU 'map' in use at the time the data was downloaded is saved as a part of the log file. This can be accessed by this function for review or comparison with other files. Should you wish to reload this map back into the ECU choose the 'Save To New File' option when exiting this function. The file so named will then be available to be reloaded by the EMP program. USER DEFAULTS Allows the user to enter the drivers name, vehicle, venue and engine details so that these will be entered into the log file at the time of downloading. These can be edited after downloading in the File Menu. GENERAL For any further information on this software contact your MoTeC dealer who will be pleased to assist you.