Radio Shack Video RF Modulator Manual de usuario
Cat. No. 15-1283
OWNER’S MANUAL
Please read before using this equipment.
RF MODULATOR
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2
Warning: To prevent fire orshock hazard, do not ex-
pose this RF Modulator to rain or moisture.
This symbol is intended to alert you to the
presence of uninsulated dangerous voltage
within the RF Modulator’s enclosure that might
be ofsufficient magnitude to constitutea risk of
electric shock. Do not open the RF Modulator’s
case.
This symbol is intended to inform you that im-
portant operating and maintenance instruc-
tions are included in the literature
ithiRFMdlt
RISK OF ELECTRIC SHOCK.
DO NOT OPEN.
CAUTION: TO REDUCE THE RISK OF ELECTRIC
SHOCK, DO NOT REMOVE COVER OR BACK.
NO USER-SERVICEABLE PARTS INSIDE. REFER
SERVICING TO QUALIFIED PERSONNEL.
CAUTION !
!
©1995 Tandy Corporation.
All Rights Reserved.
Radio Shack is a registered trademark
used by Tandy Corporation.
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INTRODUCTION
Your Radio Shack RF Modulator is designed to con-
vert the separate audio and video signals (from a vid-
eo camera, computer, portable VCR, satellite
receiver, etc.) into normal VHF TV signals that you
can see on any regular TV set.
THE FCC WANTS YOU TO KNOW
This device complies with Part 15 of FCC Rules. Op-
eration is subject to the following conditions:
• This device may not cause harmful interference.
• This device must accept any interference
received, including interference that may cause
undesired operation.
Your RF Modulator might cause TV or radio interfer-
ence even when it is operating properly. To determine
whether your RF Modulator is causing the interfer-
ence, turn it off. If the interference goes away, your RF
Modulator is causing the interference.
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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 Radio Shack store for help.
If you cannot eliminate the interference,the FCC requires
that you stop using your RF Modulator.
Modifying or tampering with your RF Modulator’s internal
components can cause a malfunction and might invali-
date the RF Modulator’s warranty and void your FCC au-
thorization to operate it. If your RF Modulator is not
performing as it should, take it to your local Radio Shack
store for assistance.
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PARTS REQUIRED
You need the following items, not supplied with your RF
Modulator, to connect it between a video input source
(video camera, satellite receiver, etc.) and your TV.
• Two audio/video (not stereo) shielded cables with
phono connectors
• Two 75-ohm coaxial cables with F-type connectors
• If your TV does not have a VHF 75-ohm F-connec-
tor, you will also need a 75-ohm-to-300-ohm match-
ing transformer
Your local Radio Shack sells a wide selection of each of
these items.
Note to CATV Installer:
This reminderis provided to call the CATV system install-
er’s attention to article 820-40 of the NEC that provides
guidelines for proper grounding and, in particular speci-
fies that the cable ground shall be connected to the build-
ing’s grounding system, as close as practical to the point
where the cable enters the house.
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CONNECTIONS
Follow these steps to connect your RF Modulator.
1. Connect an audio/video cable between the video
output jack on your video source and the RF Modu-
lator’s VIDEO IN jack.
2. Connect another audio/video cable between the
audio output jack on your video source and the RF
Modulator’s AUDIO IN jack.
(illus)
(illus)
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3. Connect the 75-ohm coaxial cables to the RF Modu-
lator following these guidelines:
• If your TV is already connected to another VHF
input source (such as cable TV, VCR, etc.):
a. Disconnect the input source’s 75-ohm cable from
the TV’s 75-ohm VHF input terminal, and recon-
nect it to the RF Modulator’s ANT IN terminal.
b.Then add a 75-ohm coaxial cable connected
between the TO TV terminal on the RF Modula-
tor and 75-ohm VHF input terminal on your TV.
CATV
Ant In To TV 75 Ohm 300 Ohms
VHF
Disconnect
from here
RF Modulator TV
CATV
Ant In To TV 75 Ohm 300 Ohms
VHF
Reconnect
here
Add this
cable
RF Modulator TV
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• If your TV is not already connected to another
VHF source:
a.Connect the input source’s (antenna, cable TV,
VCR, etc.) 75-ohm cable to the RF Modulator’s
ANT IN terminal.
b.Connect a 75-ohm coaxial cable between the
TO TV terminal on the RF Modulator and the
75-ohm VHF input terminal on your TV.
Note: If your TV has only 300-ohm VHF screw ter-
minals, use a 75-ohm-to-300-ohm matching trans-
former to complete the connection.
CATV
Ant In To TV 75 Ohm 300 Ohms
VHF
RF Modulator TV
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4. Plug the RF Modulator’s power cord into a standard
AC outlet.
(illus)
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OPERATION
1. Turn on the TV and set it to either channel 3 or 4,
whichever of the two is not used for regular broad-
casts in your area.
2. Set the RF Modulator’s CHANNEL 4/3 switch to the
same channel you set on the TV (3 or 4).
3. To select the VHF source (cable TV or antenna)
connected to the RF Modulator’s ANT IN terminal,
set MOD/ANT to ANT.
To select the audio/video source (VCR or video
camera) connected to the RF Modulator’s AUDIO IN/
VIDEO IN terminals, set MOD/ANT to MOD.
(illus)
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