ETK-V1.1 - User’s Guide
26
ETAS
Hardware Description
4.11
Status LEDs
There are three LEDs displaying the operating status of the ETK-V1.1 (Fig. 4-15
on page 26).
Fig. 4-15
Status LEDs
LED
State
Meaning
Red
On
ETK-V1.1 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-
V1.1)
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 development
system copies new data into RAM.
Flashing ETK-V1.1 is in RAM adapter mode.
Measurement and calibration are not possible (in all "ETK
usage as" modes except "ETK mode initialized")
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