Preparing your receiver – Optimus STAV-3780 User Manual

Page 13

Preparing Your Receiver

For the best radio reception, use an outdoor antenna. Follow these
steps to connect an outdoor FM antenna to the receiver using 75

Ω

coax-

ial cable.

Note: If your antenna has 300

Ω

twin-lead cable, consult your local

RadioShack store for the correct adapter.

1. Disconnect the supplied FM antenna from the receiver’s

FM UNBAL

Ω

terminal.

2. With a stripping tool, remove about 1

inches of the outdoor

antenna cable’s outer insulation to expose the cable’s shielding.

3. Fold back the shielding from the inner insulation.

4. Remove about 1 inch of the inner insulation from around the cen-

ter wire.

5. Pull the shielding to one side. Connect the center wire to the

receiver’s

FM UNBAL 75

Ω

terminal. Twist the shielding to secure any

loose wire strands, and connect it to the

FM UNBAL 75

Ω

terminal.

Note: Grounding is not necessary for reception, but we recommend it
for better FM reception and to avoid damage from lightning when you
use an outdoor FM antenna. Use a separate piece of thick polyvinyl
insulated wire to connect the terminal to the building’s power service
grounding electrode system.

Warning: Never connect a wire to a gas pipe for grounding since sparks
might ignite the gas.

Warning: To prevent injury, read and fol-
low all cautions and warnings that ac-
company the outdoor antenna.

Caution: The cable’s shielding should
only touch the terminal.

Inner Insulation

Outer Insulation

Shielding

Center Wire

ANTENNA

LOOP
ANTENNA

UNBAL

Ω

Shielding

Center
Wire

Outdoor FM Antenna