6
A B
ANTENNA/CATV CONNECTIONS
For subscribers to basic CATV service
For basic cable service not requiring a Converter/Descrambler
box, connect the CATV 75 ohm coaxial cable directly to the
antenna jack on the back of the television.
For subscribers to scrambled CATV service
If you subscribe to a CATV service which requires the use of a
Converter/Descrambler box, connect the incoming cable to
the Converter/Descrambler box and connect the output of the
box to the antenna jack on the back of the television. Follow
the connections shown left. Set the television to the output of
the Converter/Descrambler box (usually channel 3 or 4) and
use the Converter/Descrambler box to select channels.
For subscribers to unscrambled basic CATV service with
scrambled premium channels
If you subscribe to a cable service in which basic CATV
channels are unscrambled and premium channels require the
use of a Converter/Descrambler box, you may wish to use a
two-set signal splitter (sometimes called a “two-set coupler”)
and an A/B switch box from the cable installer or an
electronics supply store. Follow the connections shown left.
With the switch in the “B” position, you can directly tune any
nonscrambled channels on your TV. With the switch in the “A”
position, tune your TV to the output of the Converter/
Descrambler box (usually channel 3 or 4) and use the box to
tune scrambled channels.
300-75 ohm
matching transformer
(not supplied)
Combiner
(not supplied)
300-75 ohm
matching transformer
(not supplied)
VHF antenna
Incoming CATV
Single 75 ohm cable
Combination VHF/UHF antenna
300 ohm twin-lead wire
Splitter
Take off the splitter
Single 75 ohm cable
300 ohm twin-lead wire
300 ohm twin-lead wire
UHF antenna
Combination VHF/UHF antenna (single 75 ohm cable or 300
ohm twin-lead wire)
Connect the 75 ohm cable from a combination VHF/UHF
antenna to the antenna jack. If your combination antenna has a
300 ohm twin-lead wire, use the 300-75 ohm matching
transformer (not supplied).
Combination VHF/UHF antenna (separate VHF and UHF 300
ohm twin-leads)
Connect the UHF twin-lead wire to a combiner (not supplied).
Connect the VHF twin-lead to the 300-75 ohm matching
transformer (not supplied). Attach the transformer to the
combiner. Attach the combiner to the antenna Jack.
Separate VHF/UHF antennas
Connect the 75 ohm cable from the VHF antenna and the UHF
antenna twin-lead to a combiner (not supplied). Attach the
combiner to the antenna jack.
NOTE:
If your VHF antenna has a twin-lead wire, use the 300-
75 ohm matching transformer (not supplied), then connect the
transformer to the combiner.
Converter/Descrambler
Converter/Descrambler
Splitter
A/B switch
This television has an extended tuning range and can tune
most CATV channels without using a CATV company supplied
converter box. Some CATV companies offer “premium pay
channels” in which the signal is scrambled. Descrambling
these signals for normal viewing requires the use of a descrambler
device which is generally provided by the CATV company.
J3S90621A_E
8/06/2005, 2:21 AM
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