User's Manual

Rev 30-2015 Page 6
Deployment:
LEDs Function:
Power / Ethernet port:
This port has two main functions:
- configure the WTU-518 and harvest datas by connecting the Ethernet cable supplied by Sercel
- Power the WTU-518 when there is no internal battery, by plugging an external battery, or charge the
internal battery by an external battery or a stabilized power supply. This power input works between 11 and
16.8Vdc.
Two kinds of batteries can be plugged on this port:
 Lead-acid battery
 Lithium-ion battery
Use only the power/Ethernet cable, supplied with the WTU-518, to connect it to the battery or other
tools.
Input geophone port:
- Power ON/Power OFF of the WTU-518 by connecting/ disconnecting the geophones, analog or digital.
- Automatic recognition of geophones’ types (analog or digital).
IMPORTANT
Whenever any connector is unused, put its connector protective cap in place.
Two LEDs flashing in
red

acquisition not started or issue
after TTFF timeout
Two LEDs flashing
every 1s in green

Harvest and acquisition is
running.
GPS is locked or unlocked.
Two LEDs flashing
every 4s in green

Acquisition is running.
GPS is locked.
CAUTION