Cable splices
Page 142 OmniTrax Product Guide
The following figures illustrate OmniTrax cable splice techniques. Figure 124: shows an OC2/SC2
cable splice and Figure 125:
shows an SC1 cable splice.
Cable splice procedure
1. Cut out the section of cable being replaced (prepare for the splice).
2. Install male TNC connectors on the sensor cables on both sides of the splice. For an SC1
cable splice, strip 17 cm (6.5 in.) of the outer jacket and cut back one cable 6 cm (2.5 in.)
before installing the connectors.
3. If required, cut the replacement section of cable, ensuring that it is at least 1 m (3.3 ft.) longer
than the removed section.
For SC1 cable, repeat the strip and offset dimensions from step 2 on both ends of the
replacement cable (cut the replacement cable so it matches the offset of the sensor cable).
4. For a non-detecting cable bypass, slide 20 ferrite beads onto the replacement section of cable
(10 at each end).
5. Install connectors on one end of the replacement cable.
6. Slide the heatshrink over the sensor cable on both sides of the splice.
7. Connect the 2 male TNCs (sensor cable and replacement cable) through a female coupler.
8. Run the replacement cable to the other side of the splice, using a lazy-S pattern to provide
strain relief.
9. Carefully cut the end of the replacement section of cable so it meets the connectors on the
other section of sensor cable.
10. Install a connector(s) on the cut end of the replacement cable.
11. Connect the 2 male TNCs (sensor cable and replacement cable) through a female coupler.
12. Test the sensor cables.
Note A cable splice or bypass does not require decouplers. A cable splice
requires 2 male TNCs and a female coupler.
Figure 124: OC2/SC2 cable splice
Figure 125: SC1 cable splice
heatshrink
30 cm (12 in.)
female coupler
male TNC connectors
SC1 sensor cable
female coupler
male connector
5 cm (2 in.) heatshrink
46 cm (18 in.) heatshrink
male connector
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