Sharp 25N S180 - Manual (Page 6)

6
Antennas
• The antenna requirements for good color television reception are more important than those for
black & white television reception. For this reason, a good quality outdoor antenna is strongly
recommended.
The following is a brief explanation of the type of connections that are provided with the various
antenna systems:
OUTDOOR ANTENNA CONNECTION
• Use one of the following two diagrams if you connect an outdoor antenna.
A: Using a VHF/UHF combination outdoor antenna.
B: Using separate VHF and/or UHF outdoor antenna.
• Connect an outdoor antenna cable lead-in to the COAXIAL CABLE CONNECTOR on the rear of the
TV set.
CABLE TV (CATV) CONNECTION
• A 75 ohm coaxial cable connector is built into the set for easy hookup. When connecting the 75 ohm
coaxial cable to the set, screw the 75 ohm cable to the COAXIAL CABLE CONNECTOR.
• Some cable TV companies offer “premium pay channels”. Since the signals of these premium pay
channels are scrambled, a cable TV converter/descrambler is generally provided to the subscriber
by the cable TV company. This converter/descrambler is necessary for normal viewing of the scrambled
channels. (Set your TV on channel 3 or 4. Typically one of these channels is used. If this is unknown,
consult your cable TV company.) For more specific instructions on installing cable TV, consult your
cable TV company. One possible method of utilizing the converter/descrambler provided by your
cable TV company is explained below.
Please note: RF switch equipped with position A/B (not provided) is required.
“A” position on the RF switch (not supplied) : You can view all unscrambled channels using the TV’s
channel keys.
“B” position on the RF switch (not supplied) : You can view the scrambled channels via the converter/
descrambler using the converter’s channel keys.
Cable TV Line
Cable TV converter/
descrambler
(not supplied)
Two-set
signal
splitter
(not
supplied)
RF switch (not supplied)
OUT IN
A. Combination VHF/UHF B. Separate VHF/UHF
NOTE:
Antenna Connections
• Consult your SHARP Dealer or Service
Center for the type of splitter, RF switch
or combiner that might be required.
1. A 75 ohm system is generally a round cable with F-type connector
that can easily be attached to a terminal without tools (not
supplied). The F-type connector should be finger tightened
only.
2. A 300 ohm system is a flat “twin-lead” cable that can be attached
to a 75 ohm terminal through a 300-75 ohm ADAPTOR (not
supplied).
F-type connector
75-ohm coaxial cable (round)
300-ohm twin-lead cable (flat)
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