Installing cable fittings
Page 134 OmniTrax Product Guide
OC2/SC2 decoupler installation (method 1 - active loops)
Method 1 is the recommended decoupler installation technique, as it provides superior detection at
decouplers while enabling the screening out of the high clutter signal that sometimes occurs near
decoupler locations.
OmniTrax decouplers connect two contiguous sensor cable sets (TXA to TXB and RXA to RXB).
To install decouplers using method 1:
1. Dig the trenches for the A-side cables and B-side cables and join the trenches at the specified
decoupler location.
2. Either dig trenches for the two active cable loops or excavate the area for the active loops to
the specified burial depth (min. excavated area 4 m 10 cm (13.5 ft.) long X 35 cm (14 in.) wide
X 23 cm deep) (25 cm deep at cable crossover points).
3. Form the two sensor cable sets into loops, with the loops crossing each other at the
decouplers’ specified installation locations (TXA and TXB, RXA and RXB).
Figure 111: OC2/SC decoupler installation
Figure 112: Active-loop overlapped decoupler installation
NOT TO SCALE
30 cm (max.) offset
Line up the decouplers side by side. The maximum offset between decouplers is 30 cm (12 in.)
ideal (no offset)
2 m (6.5 ft.)
10 cm to 2 m
4 m
decoupler
TXA
RXA
TXB
RXB
decoupler
2 m
(4 in. to 6.5 ft.)
30 cm (1 ft.) min.
30 cm (1 ft.) min.
vertical cable separation at crossover
5 cm (2 in.) of soil between
TXB
TXA
cables at crossover
20 cm (8 in.) burial depth
25 cm (10 in.) burial depth
side
view
top view
(13 ft.)
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