1. Operating the DL1

1.1 Description of the plug/connections/lights etc on the DL1

Front
	Start/Stop Logging Button	Press once to start logging, again to stop logging.
	Status Light	This light flashes to indicate that the DL1s processor is operating normally
	GPS Lock Light	This light flashes when the internal GPS system is locked on. It flashes once slowly then a quick "blink" for each satellite it has locked onto. Details about mounting the GPS antenna are here.
	Power On	This light illuminates when the DL1 is connected to a valid power supply. Advice about connecting a power supply is here.
	Logging	This light illuminates when the DL1 is actually logging data to the compact flash card. When this light is illuminated YOU MUST NOT TURN THE DL1 OFF, OR EJECT THE COMPACT FLASH CARD!
	Compact Flash Slot	This is the slot for the compact flash card. There are more details here.

Rear
	Analg 1 [5v]	Analogue input 1, for use with external sensors maximum input 5v.
	Analg 2 [5v]	Analogue input 2, for use with external sensors maximum input 5v.
	Analg 3 [5v]	Analogue input 3, for use with external sensors maximum input 5v.
	Analg 4 [5v]	Analogue input 4, for use with external sensors maximum input 5v.
	Analg 5 [12v]	Analogue input 5, for use with external sensors maximum input 12v.
	Analg 6 [12v]	Analogue input 6, for use with external sensors maximum input 12v.
	Analg 7 [12v]	Analogue input 7, for use with external sensors maximum input 12v.
	Ground	Ground, recommended for grounding analogue sensors.
	Ground	Ground, recommended for grounding analogue sensors.
	+5v Ref out	+5v output, maximum current output 100mA. This can be used for powering external sensors
	+12v Power	ESSENTIAL! This is the power supply for the DL1, it needs 10v-15v and about 150mA minimum. Details here.
	Power Ground	ESSENTIAL! This is the ground for the power supply to the DL1. Details here.
	RPM [5v]	This is the "low level" rpm input that triggers about 5v - this MUST NOT be connected to the ignition coil. Details here.
	Spark In	This is the "high level" rpm input that connects to an HT lead or the low voltage side of the coil. Details here.
	Spark Ground	This is the ground for the "high level" rpm input that connects to an HT lead or the low voltage side of the coil. Details here.
	Start Logging	Grounding this pin has the same effect as pressing the start/stop logging button on the front of the DL1.
	Lap Beacon	This input can be used with our "yet to be released" lap beacon product for specialist applications.
	Log Status	This pin is switched by the DL1 at the same time as the sample light on the front of the DL1.
	Frequency 1	Frequency input 1, for connection to an external shaft or wheel speed. Triggers at 5v. Details here.
	Frequency 2	Frequency input 2, for connection to an external shaft or wheel speed. Triggers at 5v. Details here.
	Frequency 3	Frequency input 3, for connection to an external shaft or wheel speed. Triggers at 5v. Details here.
	Frequency 4	Frequency input 4, for connection to an external shaft or wheel speed. Triggers at 5v. Details here.
	GPS rf +3.3v	GPS antenna connection (gold SMA type). This feeds 3.3v out to the active GPS antenna and takes in the GPS rf signal.
	Serial Port	This single connector actually connects to 2 serial ports. The first port allows access to the DL1 processor for upgrading the internal firmware and streaming data. The second serial port allows direct access to the GPS module for either updating it's firmware or monitoring it's output directly either for the purposes of checking the GPS functionality or for 3rd party applications e.g. navigation software.

"WARNING": To avoid any possible damage to the car paintwork, please take care when mounting magnetic GPS antennas. In particular make sure that there are no dust or grit under the antenna. In some cases it maybe required to add additional protection to the paintwork prior to mounting the antenna to avoid damage.

1.2 Sampling Data with the DL1

If used, connect a GPS antenna to the rear of the DL1 Connect the DL1 to a valid power supply, after a short pause the power light on the front of the unit will come on and the status light will start flashing rapidly. Insert a freshly formatted compact flash card into the slot, the status light will stop flashing for a second or 2 then start again when the DL1 is ready to log data Press the "Start/Stop Logging" button on the front of the DL1, the "Logging" light will come on indicating that the DL1 is writing data to the compact flash card

To stop data logging:

Press the Start/Stop Logging button on the front of the DL1, the "Logging" light will go out ONCE THE LOGGING LIGHT HAS GONE OUT, eject the Compact flash card from it's slot Power can now be disconnected if required Put the compact flash card in a suitable reader and check a file has been written to it

Advanced operation

You can set the DL1 to automatically start and stop logging based on external inputs or on a timed basis. for more information on how to do this, see the DL1 Configuration software section here.

1.3 Real Time Output

Practically the whole time the DL1 is powered up it is outputting data in real time to it's external serial port, this can be used for a number of applications included a new dashboard product that is being developed, and for checking the logger inputs using the monitor software.

1.4 Important notes about compact flash

click here

1.5 Further Reading

For more information on operating the unit, please click on the following links:

DL1 / Operation