User's Manual

Draft
26 RT System 2 v2.0.0 Deployment Guide R00.e
© 2010-2012 Wireless Seismic, Inc. All rights reserved.
3. Backhaul
Backhaul Components
3.2 Backhaul Components
The backhaul components are either remote backhaul components or central
backhaul components. Remote components are the components that are not
physically located next to the recording truck. Central components are physically
located at the recording truck. Both remote and central backhauls are composed of
the following:
 Line Interface Unit (LIU) Kit
 Antenna
 Radio Kit
 Mast Kit
3.2.1 LIU Components
The following table lists the LIU kit components:
3.2.1.1 LIU
The data transmitted by the WRUs is collected by the Line Interface Unit (LIU).
The LIU acts as the interface between the network of WRUs and the backhaul
equipment. The LIU has an Ethernet port that can be connected directly to a
computer, or more commonly, to an armored fiber optic cable or a backhaul radio.
Backhaul radios operate in the 900 MHz or 5.8 GHz bands. A second array of WRUs
can be deployed on the other side of the LIU, symmetrically or asymmetrically
around the LIU. The LIU is shown in the following figure:
Table 3–1 Line Interface Unit Kit (15-0041)
Remote Backhaul Components Central Backhaul Components
Item Reference Item Reference
LIU (10-0016) “LIU” on page
26
LIU (10-0016) “LIU” on page
26
12 V DC Battery or power
supply (not included)
“Battery and
Power Supply”
on page 28
12 V DC Battery or power
supply (not included)
“Battery and
Power Supply”
on page 28
Cable, LIU to Battery (60-
0034)
“Cables” on
page 28
Cable, LIU to Battery (60-
0034)
“Cables” on
page 28
Cable, Ethernet (60-0036, 60-
0037, 60-0038)
“Cables” on
page 28
Cable, Ethernet (60-0036, 60-
0037, 60-0038)
“Cables” on
page 28
Cable, LIU-to-PC (60-0039) “Cables” on
page 28
Cable, LIU-to-PC (60-0039) “Cables” on
page 28