Radio Shack Video RF Modulator Bedienungsanleitung

Cat. No. 15-1283

OWNER’S MANUAL

Please read before using this equipment.

RF MODULATOR

15-1283.fm Page 1 Thursday, July 15, 1999 2:19 PM

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 !

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)

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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

15-1283.fm Page 7 Thursday, July 15, 1999 2:19 PM

• 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)

15-1283.fm Page 10 Thursday, July 15, 1999 2:19 PM

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