Preparation of trenches
Page 120 OmniTrax Product Guide
Laying the sensor cables
For OmniTrax sensor cables, the first 20 m (66 ft.) of cable on the reel is lead-in cable. The
beginning of the detecting section is marked by red bands. Dispense the cable into the slot(s) or
trench(es). Ensure that the two red bands on the sensor cables line up side-by-side at the
designated start point, and there is enough lead-in cable to create a 2 m (6.5 ft.) service loop at the
processor location.
Required equipment
• OmniTrax sensor cable sets (SC1, SC2, OC2)
• wooden or metal shaft (for dispensing cable)
Dispensing sensor cable
1. Put a stick (e.g., a shovel handle) through the hole in the cable reel. With one person on each
end of the stick, lift the cable reel and walk along the trench or slot. The cable will dispense as
you walk.
2. Inspect the cable for damage, as it is dispensed.
3. Position and secure the ferrite beads on the lead-in cable (see Installing ferrite beads
on page
121).
Note If you are shortening the lead-in cable, OmniTrax requires a minimum of
6 m (20 ft.) of lead-in cable. As a precaution, Senstar recommends
retaining at least 10 m of lead-in cable.
Note If there is a coil or loop in the cable after it has been dispensed, roll the
coil out to the end of the cable. DO NOT attempt to straighten it by
twisting or pulling the sensor cable.
Note DO NOT bury a cable that has a damaged outer jacket. See Repairing
sensor cables on page 154 for repair information.
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