Haltech IQ3 Data Logger Dash - Manual (Page 87)

IQ3 Data Logger Dash Installation Manual
87
I cannot set Start Finish with the dash?
After the Set SF message is brought up on the display, attempt to set the start finish point
within less than 1 minute. Best results are obtained by setting within 30 seconds.
I lose satellites when I start to accelerate on the track?
This is typically related to ignition interference. If the GPS data works at idle and driving slowly
but is lost when the car accelerates, review the routing of the antenna cable. Typically, when
the engine accelerates and the GPS antenna cable is routed near ignition components, the GPS
data can be knocked offline by the electrical interference. Reroute the cable to insure no
interference.
My data appears incorrect after downloading?
Insure the data logger is given time to complete the writing process to the memory card, before
turning power off to the logger. This can affect data.
Vnet Sensor Channels “Flat Line” during portions of the run
If a Vnet channel is subjected to excessive electrical interference, the channel will shut down
for a period of time, then re-set and start logging again. Insure none of the Vnet modules or
cables are against or in the immediate area of ignition system components.
Vnet Sensor Channels disappear from Channel Button area
Insure no part of the Vnet system was disconnected while the data logger was powered on.
If this occurs, it will be necessary to connect the user PC to the data logger and “Read” the
system. If the system fails to see the modules, the channels are assumed to not exist and data
will not be gathered.
Graphed data drops to the bottom of the graph, during a run.
Check battery voltage. Low battery voltage can affect all channels. If the data logger is not
receiving at least 10 Volts, all data will be affected.
Excessive noise on graphed channels
Again, electronic interference can create spikes in graphed data. Refer to the above.