Channel Vision E-1200 User Manual download pdf (Page 2)

CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK,

DO NOT REMOVE COVER.

PROPER VENTILATION REQUIRED.

NO USER-SERVICEABLE PARTS INSIDE.

REFER SERVICING TO QUALIFIED SERVICE PERSONAL.

RISK OF ELECTRIC SHOCK

DO NOT OPEN

CAUTION

Thank you for choosing Channel Vision!

Our E-1200 is the finest miniature digital RF modulator

available today and accepts one audio/video input for

modulation onto the channel of your choice. Channel Vision’s

digital circuitry provides for simple installation and years of

trouble-free performance. The E-1200 offers the widest

channel range in the class (UHF 14-78 and Cable 65-135) and

includes the highest power output (30dBmV) providing a

strong signal for long cable runs. A built-in audio impedance

adjustment is also included for true stereo audio loop through.

Simply follow the installation instructions below and you will

enjoy the convenience of Channel Vision for years to come!

Installation Instructions

Step 1: Find an unused channel between 65-135 for cable or 14-78

for UHF.

Step 2: Be sure that there is no interference on your selected

channel. We recommend the use of a block filter (model

#3102) to provide “clean” channels for modulating to.

Step 3: Remove the four screws on the side of the housing only to

access the UHF/CATV jumper.

Step 4: Select TV band using jumper on CW1 for cable (65-135) or

CW2 for antenna (14-78). It is pre-set to the cable band.

Step 5: Change the modulator channel; push and hold the select

button for three seconds until power LED on front flashes

then press CH- or CH+ to select the channel. NOTE: Up and

down buttons are in increments of one.

Step 6: Combine the RF output to the cable or UHF feed using a

Channel Vision broadband combiner. (see diagram)

Step 7: Replace four housing screws.

Step 8: Mount modulator to a wall or cabinet

System Design Considerations

Sophisticated home "networks" involving many TV sets are feasible

with the CVT modulator, but care must be taken to design an

optimum TV signal distribution system.

TV sets are designed for signals around 10dBmV. Signals below

0dB result in weak, fuzzy, snowy pictures.

Signals above 10dBmV may overdrive older TV sets which don't

have modern automatic gain controls. An inline attenuator (pad) can

be used to reduce these signals, and to balance radically different

signal strengths at all your TV's.

Signal strength decreases with coax cable length and through

connectors, splitters, and combiners. It's important to determine how

much cable and what in-line devices you'll be using and adjust your

input signal levels with amplifiers at the front end or in-line on your

network to compensate for the line losses. (The charts on the back of

these instructions will help you calculate likely losses through coax

cable runs and splitters).

In-line amps are powered through the coax cable and can be used to

achieve modest signal strength gains; more powerful a/c powered

amps offer more amplification (and usually adjustable gain and tilt

too). Your system should provide 10dBmV to every TV (maximum is

15.5dBmV, per the FCC).

Reverse isolation is used to prevent the modulator signal from

leaking out to the antenna or cable input. Reverse isolation is

accomplished by placing an amplifier between your antenna or cable

Products to be installed by certified dealers only.

Certification Requirements: Must be professional installing dealer, pass

certification test and familiar with TV and antenna systems. Call 800/840-

0288 for Channel Vision Training Manual and certification test.

Note: This equipment has been tested and found to comply

with the limits for a Class B digital device, pursuant to

part 15 of the FCC Rules. These limits are designed to

provide reasonable protection against harmful interference

in a residential installation. This equipment generates,

uses and can radiate radio frequency energy and, if not

installed and used in accordance with the instructions, may

cause harmful interference to radio communications.

However, there is no guarantee that interference will not

occur in a particular installation. If this equipment does

cause harmful interference to radio or television reception,

which can be determined by turning the equipment off and

on, the user is encouraged to try and correct the interfer-

ence by one or more of the following measures:

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and re-

ceiver.

• Connect the equipment into an outlet a circuit different

from that to which the receiver is connected

• Consult the dealer or an experienced radio/TV technician

for help.

CVT1mini-II

FOR HOME OR OFFICE USE

Channel Vision

Tested To Comply

With FCC Stan-

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Channel Vision E-1200 User Manual Page 2

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