How Do I - Connect An RPM Input To The DL1 CLUB?
Identify where an RPM signal can be taken from on the vehicle then identify the type of RPM signal. There are two types of RPM signal:
* High Level RPM signal - An ideal source would be the negative side of an ignition coil.
* Low Level RPM signal - An ideal source would be the switched negative side of a fuel injector.
Configure the DL1 CLUB to accept the selected RPM signal type. The data logger can be setup to accept a high or low level RPM signal. It is very important to configure the unit before connecting an RPM signal.
If the DL1 CLUB is configured to receive a low level RPM signal but instead receives a high level RPM signal, this could damage the data loggers circuit board. To configure the RPM input & log it on the DL1 CLUB:
1) Open the DL1 CLUB configuration assistant, connect the data logger to the laptop & power up the unit.
2) Read back the configuration from the DL1 CLUB before modifying the configuration in any way.
3) Open to the RPM Inputs section & select the RPM signal type you want the data logger to accept i.e. low or high level.
Note - It is best to leave the Pulses per revolution setting in the RPM Inputs section as 1 to start with. If the RPM displayed in the data is incorrect, doubling the pulses per revolution from 1 to 2 has the effect of halving the RPM value in the data. Halving the pulses per revolution from 1 to 0.5 has the effect of doubling the RPM value in the data.
4) Open the Flash Card Storage section of the configuration assistant & ensure that RPM is set to log at 100Hz.
5) Send the updated configuration to the DL1 CLUB & save the new configuration file. To save the configuration file, go to File > Save Configuration.
Connect the selected RPM signal to the DL1 CLUB. If the selected RPM source uses a high level RPM signal, 2 connections must to be made to the data logger:
1) Connect the high level RPM signal from the vehicle to rH on the data logger, this is the high level RPM input.
2) Connect a GND from the vehicle i.e. chassis GND to rG on the data logger, this is the high level RPM GND connection.
If the selected RPM source uses a low level RPM signal, only 1 connection is required:
1) Connect the low level RPM signal from the vehicle to rL on the data logger, this is the low level RPM input.