Channel Vision E-1200 Installation Instructions, System Design Considerations

!	C A U T I O N
	RISK OF ELECTRIC SHOCK
	DO NOT OPEN

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.

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.

Channel Vision CVT1mini-II

Tested To Comply

With FCC Stan-

FOR HOME OR OFFICE USE

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.

Thank you for choosing Channel Vision!

Step 7: Replace four housing screws.

Step 8: Mount modulator to a wall or cabinet

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)

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