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States
Off:
Not powered, no data
collection.
Asleep:
Low power. Waiting for
command.
Awake:
Full power. Ready to
collect.
LED Indicators
Blue LED – Bluetooth
None:
Off, not active.
On Solid:
On, not linked.
2 Hz Blink:
On, successfully linked.
Red LED – Sonde State
None:
Sonde is
Off
or
Asleep
with logging disabled.
0.1 Hz Blink:
Sonde is
Asleep
with
logging enabled.
1 Hz Blink:
Sonde is
Awake
.
On:
Sonde is
Awake
with faults.
Sonde States and
LED Descriptions
States
An EXO sonde is always in one of three operational states:
Off, Awake,
and
Asleep
. These states determine the
sonde’s current power usage and logging potential. When
Off
, the sonde is not powered and cannot collect
data (no batteries installed, no topside power). Users can apply power to the sonde internally, using batteries,
or externally with an EXO field cable attached from the topside port to an EXO Handheld, DCP or other
approved power source. Once power is applied to a sonde, it is either
Awake
or
Asleep
.
When in an
Asleep
state, the sonde remains in a very low
power setting and waits for a user command or its next
scheduled logging interval. An
Awake
sonde is fully powered
and ready to collect data. Once awakened, a sonde remains
Awake
for five minutes after its last communication via
Bluetooth or 30 seconds after its last communication via
the topside port. The sonde also automatically awakens 15
seconds before its next scheduled logging interval.
LED Indicators
Each sonde has two LED indicators that show the sonde’s
status. The blue LED indicates the Bluetooth’s wireless
connection status. The red LED indicates the sonde’s current
state.
The Bluetooth light (blue) is activated by a magnet swipe at
the magnetic activation area. When the blue LED is off, the
Bluetooth is disabled. When the light is on continuously, the
Bluetooth is enabled, but no link has been established. When
the blue LED blinks at 2 Hz, the sonde’s Bluetooth is on, and
has established a link.
When the red sonde state LED is off, the sonde is either
Off
or
Asleep
and not logging. When it blinks at 0.1 Hz (once
every 10 seconds), the sonde is
Asleep
and logging is enabled.
When the red light blinks at 1 Hz, the sonde is
Awake
and
has no faults. If the red light is lit continuously, the sonde is
Awake
and has detected faults, such as problems with the
system that need to be fixed prior to use.
Modes
Within the
Awake
state, the sonde has three modes, which
are activated via Kor software. When “Inactive (Off),” the
sonde does not log any data. In “Real-Time” mode, the
sonde continuously collects data at a user-specified interval
(default is 2 Hz). “Sample/Hold” mode allows users to easily
synchronize data between the sonde’s data logger and an
external data collection platform.
2.4
