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C3418M-B (11/06) 5
4. Connect wiring to the circuit board inside the back box. When finished, close the door to the back box and turn on the
power. The green LED will light.
NOTES:
• Aux 1: Maximum 2 A at low voltage (<40 V)
Aux 2: Maximum 30 mA at 32 VDC
• If you are using both unshielded twisted pair (UTP) wiring and a translator board, install the UTP wiring before
installing the translator board.
• If you are installing an environmental back box in a railway application, attach a ground wire from the circuit
board power connector to a structural ground using at least 18-gauge wire.
5. Attach the back box leash to the lower dome.
WARNING: An electrical short in the back box may occur if the metal BNC connector is not completely covered by
the protective boot.