C-0301 Instruction Manual - Channel Vision Technology
Contents
1. Antenna jumper The unit must be powered down to change to a different setting 2 Verify the TV is set up on the proper TV channel band Use Air for UHF channels or Cable for Ultraband channels The TV will have an on screen set up menu or a switch for this function Also make sure the modulated channel isn t blocked out by auto programming To check for the TV being set to the wrong band go to the equivalent channel on the other band i e to check 65 cable try 14 UHF Add 51 channels for antenna connection to cable channels Check TV manual to make sure TV works on channel above 65 Check all connections for a good connection Check splitters and amplifiers for 1GHz rating Try another TV bypass all components and go directly into TV ARR Black Picture No Modulation In this case the TV and the modulator are talking to each other The video signal is not being passed through the system 1 Verify good connections to the modulator from the video source i e VCR 2 Check video source VCR Sat Receiver etc by running the outputs directly into the video inputs on the TV Verify video source is working 3 Check for power at video source 4 Disconnect modulator from system A Picture goes to snow problem is between video source and inputs on the modulator B Picture stays black hook up the modulator directly to a TV eliminating all the components of the system and check the picture Grainy Local Ch2. 29dBmV Demodulators are used to demodulate the output of a cable box converter making it possible to assign the cable signal to any channel cable boxes usually limit your choices to channel three or channel four Use a demodulator to condition the cable signal before assigning it to a CVT input line atellite Receiver To TV s Adjustments Video Level Adjustment Adjust the incoming video source base band level Use only to increase brightness and balance the channels for consistent contrast Channel Up Down Changes the modulated channel Press and hold Select Cesc cuco for 2 seconds or until front light blinks to allow channel up down to work scriber s home or apartment that has been installed by a cable operator or renner Push crame Push crame Push remar Push its contractor It does not include such items as amplifiers converters decoder boxes or remote control units meor cavie cosenne _ ome 117 60 Down 19 FCC Regulations the Cable TV Act After a subscriber voluntarily terminates cable service the cable operator may take one of two action 1 Leave the home wiring in place 2 Notify the consumer that it will remove the wiring unless the consumer purchases it from the cable operator on a per foot re placement cost basis If the wiring was previously transferred or sold to the subscriber the sub scriber owns it and the cable company cannot remove it or re
3. down stream from that component to block the power from getting to the TVs 2 If the rolling is only on the modulated channels check for impedance mismatch by adjusting the video level adjustment pot Vertical Bars Rolling Through TV Picture Check for AC power getting on the line Use a ground breaker in line Black and White Lines on one Local Channel Move modulated channel up to a new channel If problem persists and all of the inputs of a multiple input modulator are not being used check default channels on modulator to see 1f default channel is set to the same channel that the problem channel 1s set to Flashing at the Top or Middle of TV Picture 1 If flashing is on modulated channels turn up attenuator down gain of modulator 2 If flashing is on local channels attenuate output of amplifier 3 Remove cable TV from system If flash stops install filter 3102 __ to fix problem Picture is Tearing Possible impedance problem Check that impedance switch is set to 750 Ghosts on the Picture 1 Terminate all unused ports with 750 terminator model 2101 2 Check for low quality combiner in system Replace with high isolation combiner HS model combiner Channel Vision Limited Warranty Channel Vision Technology will repair or replace any defect in material or workmanship which o ccur during normal use of this product with new or rebuilt parts free of charge in the USA for two years from the date of original purchas
4. 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 Connect the equipment into an outlet a circuit different Consult the dealer or an experienced radio TV technician E Series 1200 Basic Setup company input and the CVT combiner This prevents the CVT signal from propagating back up the input line Another way to prevent leakage from your system is to cap all unused coax cable ports on you network with appropriate terminators Cable or Antenna Bandpass filters stop unwanted frequencies while passing all others along They re handy if a channel you want to use for a CVT source is already in use 3102 Filter Modulator O Channel Vision O MULTI ROOM VIDEO TECHNOLOGY CVT 15PIA Taps are used to redirect a portion of a signal from the main trunk line while passing the remaining signal strength through For example a 12dBmV tap would pass 29dBmV from a 30dBmV trunk line signal and pass the remaining 18dBmV to a branch line Minor signal loss of 1dB would occur in the trunk line leaving
5. 6 9 006 beat HS 8 11dB Taps Pass Thru 1dB Suggested dB level TV 8 15dB Maximum of 15 5dBmV per FCC Regulation frequencies 10 When possible use the lowest frequencies available for the modulated channels Lower channels frequencies have lower signal loss on the cable runs 11 When in doubt run the signal a little high to the television and use an attenuator to lower the signal strength going into the TV Attenuators may be combined 1 e two 3dB attenuators will equal 6dB Make sure to use a well shielded coax of either RG 6 Quad or RG 11 for long trunk runs Use RG59U Coax for composite baseband video signals only Combine the modulator into the video distribution system as far up stream as possible If the system needs to be amplified use the amplifier as far up stream as possible Trouble Shooting Trouble shooting any system can make or break the entire installation Here are the most common problems and solutions After trying these solutions call 800 840 0288 for 24 hour technical assistance Calls before 8am and after 5pm pacific standard time will be returned by the technician on call Snowy Picture No Modulation This is a problem of the TV and the modulator not talking to each other 1 Verify the modulator is set up for the proper TV channel band Cable TV or antenna Set the channel badn by inserting the jumper on the back of the unit to the desired location CATV sjumper or
6. 70dB Exc 95 99 Inputs Channel Width 6 0MHz Video 0 4V 2 7V Peak to Peak Audio Offset 4 5MHz Audio IV RMS Sidebands Double Connectors RF Output Video In RCA Female Maximum 30dBmV Audio In RCA Female Gam Range Fixed RF Output F type female Video Output 1VPeak to Peak Operating Temperatures Audio Output IV RMS 0 C to 50 C Channel Selector Up Down selector buttons I Transformer Input Increments of one Input Voltage 115 VAC 50 60Hz Power 8 Watts Output Voltage 12 VDC 250mA 500 166 rev B
7. E SERIES 1200 Installation Instructions CHANNEL VISION 234 FISCHER AVENUE e COSTA MESA CA 92626 714 424 6500 e 800 840 0288 e 714 424 6510 FAX http www channelvision com e E Mail sales channelvision com 2001 CHANNEL VISION Channel Vision FC FOR HOME OR OFFICE USE CAUTION RISK OF ELECTRIC SHOCK Tested To Comply With FCC Stan DO NOT OPEN 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 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 an
8. annels Good Modulated Picture 1 Disconnect the modulator from the system and connect the local channel feed directly to the distribution system and check TV picture quality A If the picture quality is good the insertion loss of the combiner for the modulator is degrading the local channel signal Use a CVT 15PIA to compensate for the insertion loss B The other alternative is to use a 6dB tap as the combiner put the local channel feed on the pass through port for a minimal loss of signal connect the modulator to the tap off port C If the picture is still bad check for a bad connection where leakage may occur or 1f the shielding braid 1s touching the center conductor 2 Install model CVT 15PIA amplifier after the combiner Grainy Modulated Channel Good Picture on the Cable Channels 1 Disconnect cable channels from the system and check the modulated channels A If the modulated channels are good use a low pass filter to clean up the incoming frequencies to be modulated B If the modulated channel does not improve after disconnecting the local channels evaluate signal loss of modulator through the splitters and cable length of the system Amplify after the combiner if needed C Also check the connections between modulator and the combiner for leakage or the cable braid is touching the center conductor 2 Make sure the attenuator adjustment on the back of the modulator is turned to maximum output power 3 Check ou
9. d familiar with TV and antenna systems Call 800 840 0288 for Channel Vision Training Manual and certification test 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 Set the jumper on the back side of the unit for the desired band UHF Antenna or CATV Step 4 Select TV band by inserting jumper into CATV jumper ch 68 135 or Antenna jumper ch 14 78 location on the back of the unit Default setting 1s cable band Step 5 Change the modulator channel push and hold the select button for three seconds until power LED on f
10. e This is a no hassle warranty with no mail in warranty card needed This warranty does not cover damages in shipment failures caused by other products not supplied by Channel Vision Technology or failures due to accident misuse abuse or alteration of the equipment This warranty extends only to the original purchaser A purchase receipt invoice or other proof of original purchase date will be required before warranty repairs are provided Mail in service can be obtained during the warranty period by calling toll free 800 840 0288 toll free A Return Authorization number must be obtained in advance and be marked on the outside of the shipping carton This warranty gives you specific legal rights and you may have other rights which vary from state to state Ifa problem with this product develops during or after the warranty period please contact Channel Vision your dealer or any factory authorized service center Specifications RF Modulator PLL Synthesized Oscillator Video Performance Video NTSC Differential Gain Less than 2 0 2dB Audio L amp R Monaural Stereo loop opt Differential Phase Less than 3 degree RF Carriers Signal Noise Ratio Greater than 52dB Frequency Stability Frequency Ranges 1KHz UHF 471 25 855 25MHz Ultraband 469 25 859 25MHz Spurious Output Rejection 12MHz Greater than 70dBC 12MHZ Greater than 55dBC Outside Carrier Inside Carrier Channels UHF 14 78 Ultraband 65 135 Isolation Greater than
11. es providing service over that wiring 1 Try for 10dB of signal strength at each television Use a little more for big screen TV s Remember Uncle Sam doesn t like more than 15 5dB of signal going into any TV When laying out your system there will be approximately 5dB of signal loss per 100 of RG6 Be sure ALL of your splitters and amplifiers are broadband Splitters should be 5MHz to 1GHz and amps should be 40MHz to 1GHz Check and make sure that all televisions are set up for the proper frequency spectrum i e UHF or cable Make sure that the channels you want to modulate on have clean snow No lines or interference Use a low pass filter on every installation to clean up the frequencies the modulator will be assigned to and keep any potential interference out of the system Model 3102 cleans up channel 64 84 105 and above Allow I to 2 channel spacing between modulated channels and active channels Always compensate for insertion loss with splitters and taps There will always be a drop in antenna cable signal strength when combining a modulator to an existing system because of insertion loss with the combiner When tosskey combining an existing Coax signal with a RG6 per 100 4dB modulated signal RG59 per 100 5dB make sure to have Splitter equal signal strength at HS 2 3 5dB the point of the HS 3 5 5dB combiner so one HS 4 7dB signal does not degrade the other and cause HS
12. n 3 Adjust camera lens see lens manual Modulated Picture is Too Dark 1 If baseband video is being split with a Stereo 000 Loop Kit or loop through quad set impedance matching switch or potentiometer termination switch to 1KQ 2 Adjust the white video level adjust pot on the chassis located under the white cover plate above the channel select to the proper brightness 3 Check all connectors for 750 Noise on the Audio 1 Insert grounding block in line and ground coax cable before it enters the TV 2 Use professional grade audio video interconnect between the components and the modulator Audio is Too Low Use a Y Connector to combine the left and A 000 right audio before entering the modulator Herringbone in Picture on Modulated Channel Disconnect modulator from local channels si an check modulated channel 000 A If there 1s programming move the modulated channel B If the picture is snowy use a 3102 80 low pass filter to block noise or data coming in from cable company C Separate modulated channels by two channels Horizontal Bars Rolling Through TV Picture 1 Check for a component of the system to introduce DC power into the system Disconnect that component and check TV If the hum bars stop use a DC blocker
13. ront 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 ence by one or more of the following measures Reorient or relocate the receiving antenna Increase the separation between the equipment and re ceiver from that to which the receiver is connected for help Step 7 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 T V signal distribution system TV sets are designed for signals around 10dBmV Signals below OdB 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
14. strict its use regardless of the reason for service termination If the subscriber does not already own the wiring and declines to purchase it from the cable operator the cable operator may remove the home wiring within 30 days of the subscriber s refusal The cable company must re move the wiring at no charge to the subscriber and must pay the cost of any damage caused by removing the wiring To leave the wiring inside and remove the wiring outside a subscriber s home a cable operator may for single unit dwellings sever the cable ap proximately 12 inches outside the point where the cable enters the outside wall of the subscriber s home Channel up and down buttons are in increments of one The E 1200 is factory set for CATV 65 For multiple unit dwellings the cable operator may sever the wire approxi mately 12 inches outside the point where the cable enters the subscriber s individual dwelling unit except in cases of loop through or other similar series wire configurations that are not covered by the home wiring rules If the cable company fails to remove the wiring within 30 days of the sub scriber s refusal to purchase it the cable operator forfeits its right to the wiring and may not remove it or restrict its use at any later time A cable operator will not be held responsible for any signal leakage that System Installation Checklist occurs from the home wiring once the cable operator ceas
15. tput strength with field strength meter 4 Connect modulator directly to TV and check picture quality 5 Check bandwidth of all splitters and amplifiers for 1GHz capability 6 Place TV cable setting on standard NOT HRC or IRC TV Won t Tune High Enough to get Modulated Channel 1 Use an external tuner i e VCR or a Cable Box converter tuner to allow the TV to view a modulated channel on a channel through the external tuner 2 If the modulated channel is beyond the capabilities for that TV the TV will not work with the system Cable Company Box Won t Pass a Modulated Signal modulator is sending a signal the TV can receive 1 Connect modulator directly to TV and verify the 7 2 Use model 3101 Cable Box Combiner Kit to route the modulated signal around the cable box See schematic page Cable Company Uses All Available Channels 1 Use a low pass filter 3102 to block out channels 80 and above for clean modulation won t effect channels 95 99 2 Call for pricing on a custom filter to block out a specific channel or multiple channels Modulated Picture is Too Bright or Washed Out 5555 1 Adjust the white video level Adjust port on the chassis located under the white cover plate above the channel select to the proper brightness 2 If using a camera check positioning of the lens to be sure it s not aimed at the sun or a reflectio
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