Thermo Scientific AquaSensors
™
DataStick
™
Ethernet Communications User Guide
13
3.1.4 LED Indicators
There are two bi-color LED indicators visible from the DataStick-end of the Adapter as
shown in Figure 13.
Figure 13: LED indicators on the Adapter. Note that the Heartbeat LED is recessed while the
Link/Activity LED is not.
The Link/Activity LED glows green when there is a link between the Adapter and
another network device, and it glows red when there is network activity.
The Heartbeat LED is recessed within the body of the Adapter. It blinks green at a rate
of 1 Hz while the Adapter is operating normally. It blinks red and green to indicate that
the IP Address, Subnet Mask, and Gateway Address have been restored to default values.
See Section 3.1.5 for more information about restoring the communications settings to
default values.
Link/Activity LED
Heartbeat LED
(recessed)