ETAS
Hardware Description
ETK-T2.2 User Guide
27
4.14
Status LEDs
There are three LEDs displaying the operating status of the ETK-T2.2 (Fig.
26).
Fig.
4
-
10
Status LEDs
LED
State
Meaning
Red
On
ETK-T2.2 is supplied with power and active (i.e. the ECU is
switched on or the ETAS calibration and development sys
-
tem is connected and ready to communicate with the ETK-
T2.2)
Green
On
When the power supply voltage drops below 3.5 V, the
data retention of the DPRs is not longer ensured. As soon
as the ETK is switched on again, the content of the ETK-
Flash will be copied into reference and working page RAM.
The green LED stays lit until the calibration and develop
-
ment system copies new data into RAM.
Off
Working page may be different to reference page.
Working page and reference page may be different to the
ETK-Flash.
Yellow On
100
Mbit/s communication to calibration system estab
-
lished
LED green
LED red
LED yellow