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Operation:
The sensor heaters require approximately 45 seconds to warm-up. You must turn the power on to the controller
early enough that the sensors have time to warm-up. While the sensors are warming up they will output a data value
of –0.10. If you get this value during the run this means you need to turn the power on earlier.
The LED on the top of the box is a status indicator. A solid LED indicates that all four sensors are ready. A
flashing LED means one or more sensors are warming up or have a problem depending on how fast the LED is
flashing.
•
Solid LED
Indicates that all four sensors are warmed up and ready.
•
Slow flashing LED (1 flash per second)
Indicates that one or more sensors are warming up or performing a calibration. At least one sensor is not
yet ready. No action is required, the LED should go solid within a minute.
•
Fast flashing LED (5 flashes per second)
Indicates that one or more sensors has an error. The problem must be resolved before the air fuel sensor(s)
can take data. Follow the troubleshooting instructions below.
Free Air Calibration:
A free air calibration is also recommend to correct for changes in atmospheric pressure and sensor wear caused by
leaded fuels and aging. Before starting a free air calibration, the sensor must be removed from the exhaust and
exposed to open air. A free air calibration must be initiated manually by following the instructions below.
1.
Connect your PC to your data logger via the serial interface cable that was provided with your data logger.
2.
Turn the power on to the data logger and the air/fuel sensor controller.
3.
Start the DataLink program on your PC.
4.
Open the data logger configuration file by selecting Open Car Configuration under File from the menu bar.
The following dialog box will appear.
5.
Select the configuration that contains your logger type and serial number. Example: V300_1001
6.
Right click on the channel button of the A/F channel you wish to calibrate.
7.
The VNET Channel Input Parameters dialog box will open. Click on the 'Calibrate' button in the lower right
hand side of the dialog box.
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