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RF Modulator

OWNER’S MANUAL — Please read before 

using this equipment.

Your Nexxtech RF modulator is designed to 

convert the separate audio and video signals 

from a DVD player, video camera, computer, 

portable VCR or satellite receiver into VHF TV 

signals that you can view on a TV set that has 

no A/V (audio/video) inputs.

This means you can use it to connect a DVD player to an older TV’s 

antenna/cable input. The RF modulator’s gold-plated jacks and 

terminals assure maximum reliability and minimum signal loss.

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 electronic store for help

If you cannot eliminate the interference, you may be required to stop 

using your RF modulator. Changes or modifications not expressly 

approved by Nexxtech will void the warranty of this equipment.

REQUIRED PARTS

The following items (available at your local The Source store) are 

required to connect your RF modulator to a video input source and 

your TV.

•   1 audio/video shielded cable with 3 phono connectors at each 

end, if the video source’s audio output is stereo; or 1 audio/video 

shielded cable with 2 phono connectors at each end if the video 

source’s audio output is monaural

•  Two 75ohm coaxial cables with F-type connectors

•  A 75-300 ohm matching transformer, if your TV does not have a 

VHF 75ohm F-connector

•  1 S-Video cable, if the video source has a S-Video jack

Note: The audio output from the RF modulator is always mono, 

even if the source audio is stereo.

CONNECTIONS

The diagram illustrates typical configurations for video source 

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 

colour 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

•   If your video source has a S-Video jack, use a S-Video cable to 

connect the S-Video jacks on the RF modulator and the video 

source

Note: The RF modulator selects S-Video as the first priority if 

both VIDEO and S-VIDEO jacks are connected. 

Connect 75ohm 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 75ohm cable from the TV’s 75ohm VHF/

UHF terminal, and reconnect it to the RF modulator’s ANT IN 

   terminal. Then connect a 75ohm coaxial cable between the 

TO TV terminal on the RF modulator and the 75ohm VHF/UHF 

terminal on your TV

•   If your TV is not already connected to another VHF source, 

  connect a 75ohm coaxial cable between the TO TV terminal on 

the RF modulator and the 75ohm VHF/UHF terminal on your TV 

•   If your TV has only 300ohm VHF screw terminals, use a 75-300 

ohm matching transformer to complete the connection 

•   When your connections are complete, plug the RF modulator’s 

power cord into a standard AC outlet

OPERATION 

1. Turn ON the TV and set it to either channel 3 or 4, whichever is 

not used for regular broadcasts in your area

2. Set the RF Modulator’s channel 3/4 switch to the same channel 

you set the TV (3 or 4)

Note: To watch a TV broadcast, turn OFF all other video 

sources.

CARE

Keep the RF modulator dry; if it gets wet, wipe it dry immediately. 

Use and store the RF modulator only in normal temperature  

environments. Handle the RF modulator carefully; do not drop it. 

Keep the RF modulator away from dust and dirt, and wipe it with a 

damp cloth occasionally to keep it looking new.

Modifying or tampering with the RF modulator’s internal 

components can cause a malfunction and might invalidate its 

warranty. If your RF modulator is not performing as it should, take it 

to your local The Source store for assistance.

SPECIFICATIONS

Video Carrier Output Level. . . . . . . . . . . . . . . . . . . . . . . . . . 69 dB V

RF Output Channels. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 or 4

RF Output Impedance  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75 Ω

Audio Input Impedance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±3 k Ω

TV to ANT Insertion Loss  . . . . . . . . . . . . . . . . . 50 – 806 MHz –2 dB

Dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148 × 78 × 37 mm

Weight  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.38 kg

Specifications are typical; individual units might vary. 

Specifications are subject to change and improvement without 

notice.

Adding one video source to the signal:

VIDEO RF MODULATOR

STANDARD 

TV ANTENNA

TV REAR VIEW

DVD REAR VIEW

CABLE BOX

S-VIDEO

VIDEO/ 

AUDIO 

CABLE

OR

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