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XDI200 Manual Version 0.1
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©2017 Electromotive, Inc.
10.2 On-Board Data logging
On Board Datalogging, OBD does not require that a laptop be present to record data.
Instead, the OBD function is engaged by a switch to +5 or +12 volts on a GPI channel. Using the
Data Log Status Light line (pin [56]), an OBD status light can be wired to tell the user what mode
of data logging is occurring. Consult
Wiring Sensors and Inputs
to wire the GPi and Data Log
Status Light to configure the data logging. When wired appropriately, the status light will display
the following codes :
Light is Off :
No OBD is occurring.
Light is Flashing :
The OBD function
is active, and data is being recorded.
Light is On :
The OBD memory is full.
When the OBD memory is full, turn the GPI switch off. View the data log file with the
Wintec software by selecting the GPI
channel and double click on “Retrieve Data Log from Unit”.
If you do not wish to view a particular OBD file, simply turn the GPI switch back on, and the
previous file will be erased. This is an important fact : whenever the GPI switch is turned off, the
data will remain in the Tec’s memory, even if the engine is shut off. When the switch is turned
back on, the previous data will ALWAYS be erased.
There is the option to engage the OBD function only above a specified RPM point. When
this is chosen, the OBD will be engaged when that RPM is reached, and will remain on until the
switch is turned off, or the memory is full.
Typically, the RPM activation point is used for drag race applications in the following
scenario : In the software, set the RPM point to be about 200 RPM above the staging RPM. Do
the burnout and stage the car. Turn on the OBD feature. Make the run and turn the OBD off
after crossing the finish line. Download the data to the laptop when you are ready to view it. The
memory will be erased the next time the OBD switch is turned on.
The OBD has a much higher sampling rate then the PCD. The sampling rate can be
defined in the software. Faster sampling rates allow less time to be viewed in a data log file.
Conversely, slower sampling rates allow more time to be viewed in a data log file.
OBD total data logging time is limited by the memory space available in the Tec. When
the data logging is operating at the highest frequency (20 samples-per-second), about 109
seconds of data can be stored in the memory.
11 Rev Limiters
Several different rev limiters are built into the
XDI200
system. These rev limiters can be
engaged in a few different manners, and can be used for a variety of functions.
11.1 Valet Mode Rev Limiter
The Valet Mode rev Limiter is engaged when the Valet Switch is turned on. See
Section
Wiring General Purpose Inputs
for details on wiring the valet switch. Use a standard GPI input
pin, a dash mounted switch and configure the function in Wintec. The Valet Mode Rev Limiter is
activated by either RPM or Vehicle Speed. When the RPM or speed threshold is crossed, the
Valet Mode Rev Limiter will be engaged.
The Valet Mode Rev Limiter can also be used as a staging rev limiter in drag racing
applications.
11.2 Secondary Rev Limiter :
The Secondary Rev Limiter is activated when the MAT line (White 20awg, Pin 47) is
connected to ground. When activated, it will engage the same type of rev limiter as the Primary
