User's Manual

FIELD EQUIPMENT
NUSEIS
Geophysical Technology Inc Field Equipment Page | 25
• The optimal depth for the NRU to be planted, is with the bottom of the bottom clamp level with
the top of the ground. The NRU can be planted down as far as having the top of the top cap
below the surface and a thin layer of sand placed over it, so the unit is not visible.
• As with most seismic sensors, the closer to perfect vertical placement the better. Care should be
taken when planting, not to deviate from vertical.
Figure 14
• If the NRU is in Shutdown or Auto-Deploy state, it should be bumped on prior to placing it in the
ground. Make sure that the bump was successful by watching the LEDs for a single white blink
during the bump, then quickly plant it.
o For an NRU that was not commissioned in AutoDeploy state, once it is bumped on it will
need to be manually deployed next. See the NuSite manual Deploy/Undeploy section.
o For an NRU that is shutdown in a Deploy state, once it is bumped on it will need to have
the line and station numbers assigned either with the NuSite tablet, or in NuScribe after
scan sync or download. See Appendix A Deploying an NRU with NuSite section of the
NuSite manual for Edit Deployment.
o Ensure that the NRU is planted immediately after bumping to avoid having the
geophone tests fail due to the NRU being moved around during the tests.
o A green LED will indicate that all tests have passed, and the NRU is recording.
o A check should be made on the NuSite device being used for deployment, that there are
no errors indicated for the NRU.
• When an NRU goes to the line without being shutdown and is in a low power Auto-Deployed or
Un-deployed state, then either assign line and station, or deploy and assign line and station.
Refer to the NuSite manual Deploy/Undeploy section.
o A check should be made on the NuSite device being used for deployment, that there are
no errors indicated for the NRU.
• When an NRU is in a Deployed state, it is broadcasting status messages. Any NuSite device
within BLE range of the NRU will record that status into its database.
o It is recommended that each NRU be revisited with a NuSite device regularly, after
deployment at a receiver point, to collect updated status. Regularity of the revisits
would be dependent on operational considerations.