Haltech F9A - Manual (Page 61)

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Chapter 11
DataLog
11.1 The Datalog Option
This option records the Engine Data information at approximately five times per second while
the engine is running. This datalog is useful for tracking the system's behaviour through
changing rpm. It also facilitates trouble-shooting, as all the ECU's working parameters are
recorded faster than they can be read on the Engine Data Page.
The Datalog Menu is accessed through the Options Menu. (Press
sR
). Then select the
'
key to make a datalog, the IBM software must be running and Online. Or it can be
accessed directly by using
t'
11.1.1 Setting Up the Datalog Page
Before beginning a datalog the data page can only display eight parameters which are
selectable through a simple menu. To access the configuration menu press
&
and follow the
instructions that are presented with the selection menu.
11.1.2 Creating a Datalog
You can choose to record the datalog either in memory or directly to disk. To record to
memory, press
'
in the Datalog sub-menu. This will record engine data in a continuous loop,
up to about three minutes i.e.. when you stop the datalog, it has a record of the previous three
minutes of engine data.
Alternatively, you can datalog directly to disk by pressing
$
. The software will ask you for a
filename to enter. When recording to disk, you are limited only to the free memory left on
disk. The datalog consumes about 11kbytes per minute of running. Thus, on the disk supplied,
there is over 20 minutes of datalog space. The disadvantage in datalogging in this manner is
that there will be small "gaps" in the datalog of a few seconds as blocks of information are
written to disk. If datalogging to hard disk, these gaps become insignificant.
You should save the Maps being used at the time of the Datalog to disk. It is advised to do
this before the Datalog is taken. Saving the Maps makes sure that all the engine information
(including the Identification and the setups) are saved to disk. If the Datalog is view offline at
a latter date, the Maps will need to be loaded so that the programming software knows the
setup of the ECU and can calibrate the data properly.
To stop the datalog press . If you are performing a datalog to memory, the screen will
instantly jump back to the Datalog sub-menu. If you have been recording to disk, there will be
a moment's pause as the file is closed.