©
2001 RadioShack Corporation.
All Rights Reserved.
RadioShack and RadioShack.com are trademarks used by RadioShack Corporation.
15-1244
OWNER’S MANUAL — Please read before using this equipment.
A
Video RF Modulator with Selectable 3/4 Output
INTRODUCTION
Your RadioShack Video RF Modulator is designed to convert the
separate audio and video signals (from a video camera, computer,
portable VCR, or satellite receiver, for example) into VHF TV signals
that you can view on a TV set that has no A/V (Audio/Video) inputs.
The FCC Wants You to Know
This device complies with Part 15 of the
FCC Rules. Operation is
subject to the following two conditions: (1) This device may not cause
harmful interference, and (2) this device must accept any interference
received, including interference that may cause undesired operation.
Your modulator might cause TV or radio interference even when it is
operating properly. To determine whether your modulator is causing
the interference, turn it off. If the interference goes away, your
modulator is causing it.
Try to eliminate the interference by:
• moving your RF Modulator away from the receiver
• connecting your RF Modulator to an outlet that is on a different
electrical circuit from the receiver
• contacting your local RadioShack store for help
If you cannot eliminate the interference, the FCC requires that you
stop using your RF Modulator. Changes or modifications not
expressly approved by RadioShack could void the user’s FCC
authorization to operate this equipment.
REQUIRED PARTS
The following items (not supplied) are required to connect your RF
Modulator to a video input source and your TV.
• one audio/video shielded cable with three phono connectors at
each end (RadioShack Cat. No. 15-1507), if the video source’s
audio output is stereo; or one audio/video shielded cable with
two phono connectors at each end (Cat. No. 15-1504) if the
video source’s audio output is monaural
• two 75-ohm coaxial cables with F-type connectors
• a 75-ohm-to-300-ohm matching transformer, if your TV does not
have a VHF 75-ohm F-connector
Note: The audio signal will be modulated to mono, whether the video
source is stereo or monaural.
Note to the CATV System Installer: This reminder is provided to
call the CATV system installer's attention to article 820-22 of the NEC
that provides guidelines for proper grounding and, in particular,
specifies that the cable ground shall be connected to the grounding
system of the building, as close to the point of cable entry as practical.
CONNECTIONS
Figures 1–3 on page 2 illustrate typical configurations for video
sources conversion.
•
If your video source is stereo, plug the connectors on one end
of a stereo A/V cable into the video and audio input jacks on the
RF Modulator. Plug the connectors on the cable’s other end into
the video and audio output jacks on the video source, using the
color coding on the connectors as a guide.
•
If your video source is monaural, plug the connectors on one
end of an A/V cable into the video and audio input jacks on the
RF Modulator (using either the
AUDIO R
or
L
jack). Plug the
cable’s other ends into the video and audio jacks on the video
source.
Connect 75-ohm coaxial cables to the RF Modulator following these
guidelines:
•
If your TV is already connected to another VHF input source
(such as cable, an antenna, or a VCR, for example),
disconnect the VHF input source’s 75-ohm cable from the
TV’s 75-ohm VHF/UHF terminal, and reconnect it to the RF
Modulator’s
ANT IN
terminal. Then connect a 75-ohm coaxial
cable between the
TO TV
terminal on the RF Modulator and
the 75-ohm VHF/UHF terminal on your TV.
•
If your TV is not already connected to another VHF source,
connect a 75-ohm coaxial cable between the
TO TV
terminal
on the RF Modulator and the 75-ohm VHF/UHF terminal on
your TV.
Note: If your TV has only 300-ohm VHF screw terminals, use a
75-ohm-to-300-ohm matching transformer to complete the
connection.
When your connections are complete, plug the RF Modulator’s
power cord into a standard AC outlet.
WARNING:
To reduce the risk of fire or shock hazard, do not
expose this product to rain or moisture.
CAUTION
RISK OF ELECTRIC SHOCK. DO NOT
OPEN.
CAUTION:
T
O REDUCE THE RISK OF ELECTRIC
SHOCK, DO NOT REMOVE COVER OR BACK. NO USER-
SERVICEABLE PARTS INSIDE. REFER SERVICING TO
QUALIFIED PERSONNEL.
This symbol is intended to alert you to the pres-
ence of uninsulated dangerous voltage within the
product’s enclosure that might be of sufficient
magnitude to constitute a risk of electric shock.
Do not open the product’s case.
This symbol is intended to inform you that impor-
tant operating and maintenance instructions are
included in the literature accompanying this
product.
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