AiM EVO4 - Manual (Page 8)

Data Recording.
EVO4 is equipped with a 16 MB circular
memory *, capable of recording 8 million
samples.
The test length that can be recorded
depends on the sampling frequency
(i.e. how many channels per second are
recorded).
For example, in case your acquisition has a
global frequency of 500 Hz, which is fairly
common, the system can record almost 4
hours of testing.
If you require larger memory, the external
Memory Module is available: it can manage
a SD Card up to 16 Gygabyte SD and can
provide virtually unlimited recording capa-
bility.
n The LED on the front shows:
n 1 Hz blink : Stand-by status
n Solid state : Data recording in progress
n 3 Hz blink: system configuration
problems
n Flashing in alternating colors: firmware
upgrade in progress
CHAPTER 2
14 15
Start/Stop Recording.
EVO4 starts recording when one of the
following situations persist for more than
three seconds:
n RPMs over 500 rpm threshold
n Speed over 10 km / h
Thanks to a pre-buffers, EVO4 records also
the three seconds before the engine starts.
Data Download.
After activating the Aim software Race Stu-
dio2, the data are transmitted to the PC
using the USB cable supplied with the pro-
duct.
If you have recorded the test on the Me-
mory Module, you can directly insert the
SD card into your PC.
At the end of the data download, you can
delete the data in EVO4 or leave them in
memory, to eventually download them to
another PC.
GENERAL INFORMATION EVO 4
* "Circular buffer" means that once it reaches saturation,
the oldest data are overwritten by the most recent
Status LED