SENSTAR OmniTrax - OC2;SC2 Decoupler Installation (Method 2 - Adjoining Trenches)

Installing cable fittings
OmniTrax Product Guide Page 135
4. Over the 2 m (6.5 ft.) cable length at the crossover point, increase the burial depth of one of
the sensor cables 2.5 cm (1 in.) to 25.5 cm (10 in.). Cover the sensor cable with 5 cm (2 in.) of
soil to raise the second sensor cable’s burial depth to 20 cm (8 in.). This will create a
separation of 5 cm (2 in.) between the two sensor cables at the crossover point.
5. Cut one of the sensor cables at the decoupler location and install a connector and decoupler
on the cut end of the cable (see OC2/SC2 decoupler installation procedure
on page 133).
6. Cut the adjoining cable to match and install a connector on the cut end.
7. Connect the second cable to the decoupler on the first cable.
8. Complete the decoupler installation on the first cable set, and then repeat this procedure on
the second cable set ensuring that the two decouplers line up side by side.
9. Test the connections (see Cable tests
on page 146).
10. Seal the four connections with heatshrink.
11. Partially backfill the trench/excavation to hold the cables in place.
OC2/SC2 decoupler installation (method 2 - adjoining trenches)
OmniTrax decouplers connect two contiguous sensor cable sets (TXA to TXB and RXA to RXB).
To install decouplers using method 2 the trenches for the cables from one processor meet the
trenches from the second processor.
1. Join the trenches from two contiguous sensor cable sets.
2. Cut the sensor cables to meet end to end.
3. Install connectors on each sensor cable.
4. Install decouplers to connect the sensor cables so that the TXA cable from one processor
meets the TXB cable from the second processor, and the RXA cable joins the RXB cable.
Figure 113: Preparing cables for decouplers
2. Pull one cable tight along the bottom of the trench and then cut it at the decoupler’s specified installation location.
3. Install a connector and a decoupler on the end of the cut cable.
4. Pull the second cable straight along the bottom of the trench and then cut the second cable at the decoupler’s midpoint.
5. Install a connector on the second cable, slide a large piece of heatshrink over the cable, and connect the second
cable to the decoupler.
6. When completed, the cable should have a slight lazy S pattern, which provides strain relief and maintenance access.
1. Lay the two cables side by side in the trench.