Channel Vision Stereo Receiver Stereo Receiver User Manual
Contents
1. Cable home wiring is the cable wiring located inside a Cable TV subscriber s home or apartment that has been installed by a cable operator or its contractor It does not include such items as amplifiers converters decoder boxes or remote con trol units 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 replacement cost basis If the wiring was previously transferred or sold to the subscriber the subscriber owns it and the cable company cannot remove it or restrict 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 remove 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 approximately 12 inches outside the point where the cable enters the outside wall of the subscriber 5 home For multiple unit dwellings the cable operator may sever the wire approximately 12 inches outside the point where the cab2. 1808 TV 50 5 Attenuator ia Attenuator 16dB 11dB 12dB 12dB Se n ANGE non non p TV TV TV TV d Bypass Cable Box Converter Stereo Loop Through Hookup with stereo Cable or pola Stereo Loop Kit w Y receiver Stereo VCR and Cable Box Antenna 3102 Filter CVT 3UB UHF Converter and use your stereo receiver for o P Oo Eliminated if cable box will pass RF Out modulated channels REIR RF In AN In AN Out EY AV in VCR Camera Connectors Li 5 Laser Disk Player ll VR L 3 CVT 3UB UHF ER HS 4 Ol n n n WY TV TV TV TV Home Theater or Receiver Stereo All Sources Channel Selectable at all Television Sets TV and or Stereo Speakers Cable Box Combiner Kit Hs 2T TI e o Cable or Antenna Cable Box EH Bypass cable box if 7
3. 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 if the shielding braid is touching the center conductor 2 Install model CVT 15PIA amplifier on the incoming cable before the combiner See basic schematic 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 Check output strength with field strength meter Connect modulator directly to TV and check picture quality 5 Check bandwidth of all splitters and amplifiers for 1GHz capability 6 Place TV cable s
4. 86 you must set 9 9 9 the dip switches plug in the unit set the front display to your mw M x Ue 4 NE desired channel unplug the power again and then your channels Input DIP Output _DIP will work Switches Switches Note Be sure to remove power from outlet before changing DIP Bottom View Back View switch settings Note Switch positions are relative to back of modulator Note Black indicates where the switch should be Adjustments Attenuator Decrease signal strength output dBmV of modulator Stereo Loop Used to pass stereo to TV on non stereo modulator 75Q position is normal 1K position if using stereo loop Video Level Adjustment Adjust the incoming video source base band level Use only to increase brightness and balance the channels for consistent contrast Spectrum analyzer use is suggested Channel Select Used to select the input source A B or C you wish to change Also has a lockout feature to prevent the end user from changing channels Press and hold for 2 seconds or until front light blinks to allow channel up down to work Channel Up Down Changes the modulated channel DIP Switch Setting Selection of TV frequency band 10 1 12 13 14 15 Antenna Ultra Cable System Installation Checklist 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 sign
5. CVT 1UB UHF II Tm gt ie CH 123 125 o o o off m DIGITAL Cable Bo puuunung CVT 1UB UHF Il CH 74 76 Channel Vision Limited Warranty Channel Vision Technology will repair or replace any defect in material or workmanship which occur 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 purchase 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 hav
6. e two 3dB attenuators will equal 6dB Make sure to use a well shielded coax of either RG6 Quad or RG11 for RF distribution systems 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 8 a m and after 5 p m pacific standard time will be returned by the technician on call Stops Modulating No Modulation Modulator requires proper ventilation for long life reliability and continued operation Unplug unit let it cool down install in well ventilated area to continue operation 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 If cable TV or antenna If the unit uses dip switches to set the channel band was the unit powered down during or after the switches were reset to the proper band If the unit uses a jumper check for proper placement 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
7. 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 3 Check TV manual to make sure TV works on channels above 65 4 Check all connections for a good connection 5 Check splitters and amplifiers for 1GHz rating 6 Try another TV bypass all components and go directly into TV 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 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 8 Grainy Local Channels 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
8. CVT 1 lt 1ub 2ub 3ub uhf Installation Instructions The Channel Vision Multi Room Video Modulator makes it easy to map any three audio video sources to any unused channels on your television set s Watching your security cameras laser disk video tape or any other video signal becomes as easy as switching channels with your remote Because the CVT Modulator merges these additional inputs into your existing TV signal ahead of your television sets the new channels will be available at every TV hooked up to your coax cable You can even map your stereo system to an unused TV channel to pipe music to any room on your TV network Please note Some TV tuners need a video input to achieve audio output 234 FISCHER AVENUE e COSTA MESA CA 92626 714 424 6500 800 840 0288 714 424 6510 FAX http www channelvision com e E Mail sales channelvision com 2001 Channel Vision CAUTION 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 FCC Regulations the Cable TV Act
9. adjust video level adjustment potentiometer on the bottom of the chassis 3 the video source is not being split check input source directly into a TV 4 Adjust the video level adjust pot on the chassis of the set top units to the proper brightness 5 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 right audio before entering the modulator Herringbone in Picture on Modulated Channel 5955 Disconnect modulator from local channels T check modulated channel A If there is programming move the modulated channel B If the picture is snowy use a 3102 78 low pass filter to block noise or data coming in from cable company C Separate modulated channels by two channels 0000 CT CT 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 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 0000 CT CT Vertical Bars Rol
10. al 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 television 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 80 and above Allow 1 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 combining an existing signal with a modulated signal make sure to have equal signal strength at the point of the combiner so one signal does not degrade the other and cause beat frequencies When possible use the lowest frequencies available for the modulated channels Lower channels frequencies have lower signal loss on the cable runs 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 i
11. amplifier between your antenna or cable company input and the CVT combiner This prevents the CVT signal from propagating back up the input Setting Up TV Channel Range Another way to prevent leakage from your system is to cap all unused coax Example of Dip Switch Settings cable ports on you network with appropriate terminators Switch Band Channels 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 Bal Cable 59 86 sende s Taps are used to redirect a portion of a signal from the main trunk line while UE Cable 65 135 passing the remaining signal strength through For example a 12dBmV tap would pass 29dBmV from a 30dBmV trunk line signal and pass the remaining AAG CE 18dBmV to a branch line minor signal loss of IdB would occur in the trunk A Antenna 14 39 amp line leaving 29dBmV Cable 91 135 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 rly 5 ODDO Fuse ek R Audio Note When using channel range settings 59
12. ce 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 Basic Installation Instructions The Channel Vision Multi Room Video CVT Modulator is easy to hook up Just connect your video sources to the CVT Modulator as you would connect them directly to your TV s video in Determine what channels you want to map your video sources to then with the power off use the DIP Switch Settings Table to set the dip switches on the back of the CVT to provide that channel selection range Confirm that the video sources you re going to hook up are sending good signals Attach them to the video and audio inputs on the back of the CVT Modulator Connect the RF output on the CVT Modulator to one input of the supplied combiner and your existing cable TV antenna cable to the other Finally connect the output of the combiner to your TV network and plug the CVT Modulator in to the wall outlet Turn your TV on then press SELECT on the CVT Modulator to cycle the front display to the A B or C input Then select the channel you wish to set the light on the front panel shows the currently selected input and the channel display shows the channel to which that source is currently being sent C
13. d 5MHz to 1GHz Low Channels are Wavy Vertical Lines High Channels are Good 1 Unplug the modulator a Channels look good problem is beat frequencies or unbalanced cable vs modulator 1 Decrease modulator power by adjusting attenuator red knob on back or use external attenuators before it is combined with the cable TV signal 2 Use a 9 or 12dBmV tap in reverse instead of the supplied Splitter Home Run Design Cable or Antenna 3102 Filter 28 5dB A V Source TW RF Out 8 5dB CVT 15PIA CVT 1UB UHF II Basic design for home runs Tap System 3208 31dB Large design application with Cable or Antenna CVT 1UB UHF II minimal loss for the trunk line 22 5dB 2798 tap pulls part of the signal and attenuates a portion 6dB 248 M 21dB 22dB z HS 4 terc TV 9 12dB TV el Close S MI 18dB 16dB 20dB me 100 150 150
14. e other rights which vary from state to state If a problem with this product develops during or after the warranty period please contact Channel Vision your dealer or any factory authorized service center CVT 15 Specifications CVT 1ub 2ub 3ub Specifications RF Modulator PLL Synthesized Oscillator RF Modulator PLL Synthesized Oscillator Video NTSC Video NTSC Audio MTS Stereo Audio L amp R Monaural Stereo loop opt RF Carriers RF Carriers Frequency Stability 1KHz Frequency Stability 1KHz Frequency Ranges UHF 471 25 855 25MHz Ultraband 433 25 859 25MHz Frequency Ranges Antenna UHF 471 25 855 25MHz Cable Ultraband 433 25 859 25MHz Channels UHF 14 78 Ultraband 59 135 Excl 95 99 Channels UHF 14 78 Cable 59 135 Excl 95 99 Channel Width 6 0MHz Channel Width 6 0MHz Audio Offset 4 5MHz Audio Offset 4 5MHz Sidebands Double Sidebands Double RF Output RF Output Maximum 35dBmV Maximum 35dBmV Gain Range 20dBmV Adjustable Attenuator Gain Range 0 20dBmV Adjustable Attenuator Video Output 1VPeak to Peak Video Output 1VPeak to Peak Audio Output 1V RMS Audio Output 1V RMS Video Performance Differential Gain Less than 2 0 2dB Video Performance Differential Gain Less than 2 0 2dB Differential Phase Less than 3 degree Differential Phase Less than 3 degree Signal Noise Ratio Greater than 52dB Signal Noise Ratio Greater than 55dB Spurious Output Rejection Operating Temps 0 C to 50 C Outside Carrier I
15. er to add to the existing line of low pass filters The 3102 118 will pass all forward digital information with a 4 channel slope allowing 2 channels of modulation or more depending on the TV s tuner capability Please see diagram C on the next page DIAGRAM A OPTION 2 DIAGRAM B 2 RG 6 COAX TO EACH HIRE 3202 LOW PASS HIGH CONVERTER BOXES wsos DEDICATING Antenna CATV MODULATION RECOMBINING AT TV NC L CVT 1UB UHF II z 3202 Filter 5 T3202 Fiter e CH 85 HS 2 yg B B CVT 15 F O B M 3101 CABLE BOX H aa COMBINER KIT CAN PS onus BE USED IF NO VIDEO Zsa 5 INPUT AT TV 2 ANALOG 9 CH2TO DIGITAL UT AN OUT TO TV 79 fil Cable Box a DIGITA Cable Box unam DIAGRAMAC 3102 118 LOW PASS FILTER USED WITH DIGITAL CATV 1 RG 6 COAX SYSTEMS max 750MHz Cable or Antenna PART 3205 ALSO IS PLACED AT THE SOURCES FRONT OF THE CATV SYSTEMS 3102 Filter AN SOURCE
16. etting on standard NOT HRC or IRC Diy TV Won t Tune High Enough to get Modulated Channel 1 Use an external tuner i e VCR or a Cable Box converter tuner Channel Vision Model 1172 to allow the TV to view a modulated channel on 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 1 Connect modulator directly to TV and verify the modulator is sending a signal the TV can receive 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 1 Slide impedance switch to 750 position 2 If modulator is CVT set top style adjust video level adjustment potentiometer on the bottom of the chassis 3 If using a camera check positioning of the lens to be sure it s not aimed at the sun or a reflection 4 Adjust camera lens see lens manual Modulated Picture is Too Dark 1 If baseband video is being split with a Stereo Loop Kit or loop through quad set impedance matching switch termination switch to 1KQ 2 If modulator is a set top style
17. hange the channel by holding the SELECT down for two seconds until the A B C light on the front panel blinks This puts the CVT Modulator in channel change mode Press the UP or DOWN buttons on the CVT Modulator to adjust the channel number as desired When satisfied press SELECT again to exit channel change mode the CVT Modulator will automatically exit channel change mode after 5 seconds of inactivity Repeat for your other two input sources if applicable Leave a channel free between your selected channels to avoid frequency interference For example mapping to channels 32 34 36 is fine but 32 33 34 is not We suggest that you connect a RF distribution amplifier to your cable antenna signal see set up diagram on next page so you can easily balance the signal strength of that signal and the CVT Modulator signal Extreme CVT 3ub uhf B asi 6 etup differences in signal strength may cause interference Source A V Inputs That s all there is to it The information on the following pages will help you ni mi M configure more sophisticated home networks but is not necessary for basic setups Cable or Antenna System Design Considerations Sophisticated home networks involving many TV sets are feasible with the CVT 3UB UHF CVT Modulator but care must be taken to design an optimum TV signal distribution system TV sets are designed for signals around 10dBmV Signals substan
18. le 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 subscriber 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 occurs from the home wiring once the cable operator ceases providing service over that wiring CVTIub uhf II CVTIstereo II CVT2ub uhf II CVT3ub uhf Channel Vision FC FOR HOME OR OFFICE USE Tested To Comply With FCC Stan 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 en
19. ling 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 if default channel is set to the same channel that the gt problem channel is set to Flashing at the Top or Middle of TV Picture 1 flashing is on modulated channels turn up attenuator down gain of modulator f 2 If flashing is on local channels turn down gain or A attenuate output of amplifier epe 3 Install filter 3102 78 to clean up channels Picture is Tearing Possible impedance problem Check that impedance switch is set to 750 Ghosts on the Picture 1 Terminate all unused ports with 75Q terminator model 2101 2 Check for low quality combiner in system Replace with high isolation combiner HS model combiner 3 Check the type of coax used in system Inadequate shielding in coax will cause ghosting Pull new coax RG6 quad Low Channel Pictures are Good High Channel Picture is Grainy Place a tilt compensator in line after the amplifier and increase amplifier gain until the higher channels look good 2 Check frequency specifications on all splitters and amplifiers in system Replace any that are not broadban
20. litters off of one line and be trouble free while the neighbor a block away has no equipment other than a modem and a TV off of separate lines and has drop out failure return path seems to be the biggest issue Some CATV companies have found that high value hard line taps are causing modem failure System specifications of the system you are installing in is the key to a successful installation Systems With Digital CATV Now that we have somewhat of a understanding of digital let s work around the digital converter For years Channel Vision has always suggested 2 RG 6 coax to each TV location for good reason you can dedicate the digital converter or modems and use the other coax for distribution modulation satellite antenna CATV cable ready Please see diagram A on the next page If you only have one coax to each location of course your options are not as open as having two coax to each location We can still modulate with a limited amount of space Channel Vision has created a 3202 low high pass filter combo This filter will pass all channels below 70 and 80 and above allowing two channels to modulate Channel Vision also has low high pass in a single filter part 3205 60 69 This filter has a 4 channel slope on both sides allowing 2 channels to modulate 64 66 The 3205 70 79 filter also allows two channels 74 76 Please see diagrams B and C on the next page Channel Vision has also created a 3102 118 low pass filt
21. modulated channel won t pass through the 3r cable box Loop Through Quad Five channels total four for individual camera channel and one channel for the QUAD quad channel LOOP THRU CVT 2UB UHF II CVT 3UB UHF 5 Camera at A A IF M Camera B ann Camera Camera TV ie SETI m HB Understanding Digital CATV CATV Modems Due to the launch of digital CATV across the United States there is a need for clarification of digital CATV which Channel Vision offers a basic understanding of Analog channels start from channel 2 to around the 70 s digital may start around mid 80 s to as high as 115 some as high as 135 Exclude 95 to 99 the old FM band now used for pay perview or other programming Compression of channels will vary in ratio one cable company may use 8 to 1 ratio compressing 6 to 12 or as high as 16 channels every 6MHz or every channel The compressed channels or forward feed of information is introduced to the digital to anolog CATV converter box supplied by the CATV company This converter box creates hundreds of channels The digital forward feed to the converter box must remain Undisturbed This means if an incorrect low pass filter is installed or a modulated channel is placed on top of the digital informatio
22. n it will disable the digital converter box We must understand frequency allocation to prepare for profitable installations Satellite frequency starts at 950 MHz CATV systems are maxed at 750MHz and very few at 860MHz The dBmV signal characteristics are opposite from the typical analog signal remember the FCC standard is OdBmV minimum and 15dBmV maximum at the TV The digital converter s optimum level is OdBmV to 10dBmV analog and drop out levels are 18dBmV Every system will vary you would need a true digital meter to read digital though an RF meter will tell you analog measurements The analog signal will vary anywhere from 30dBmV to 10dBmV An RF amp may be required for multiple converter boxes due to the level from the cable company brought into a residence as low as 30 dbmv Modems also have a low analog dBmv requirement The analog signal may be too hot for the modem CATV companies may use taps in a line to pad down signal optimum levels will vary from OdB to 10dB 10dB may be to hot Some CATV companies use channel 106 and of course if the incorrect filter is used it will disable the modem as it would the digital CATV box The modem is usually dedicated at the front end of the distribution system Usually a two way splitter with one leg for modem and the other leg for distribution CATV companies are still testing the water with digital cable converters and modems A resident may have a modem a TV and various sp
23. nside Carrier 12MHz Greater than 70dBC 12MHz Greater than 55dBC Spurious Output Rejection Outside Carrier 12MHz Greater than 70dBC Isolation Greater than 70dBmV Inside Carrier 12MHz Greater than 55dBC Inputs Isolation Greater than 70dB Video 0 4V 2 7V Peak to Peak adjustable Inputs Audio 1V RMS Video 0 4V 2 7V Peak to Peak adjustable Connectors Audio 1V RMS Video Inputs RCA Female Connectors Audio Inputs RCA Female stereo loop thru Video Inputs RCA Female RF Output F type female Audio Inputs RCA Female Signal Combiner Supplied with unit RF Output F type female Operating Temps to 50C Signal Combiner Supplied with unit Transformer Input Insertation Loss 3 5dBmV Input Voltage 115 VAC 50 60Hz Bandwidth 5 1000MHz Power 8 Watts Transformer Input Exterior ABS resin fiber black Input Voltage 115 VAC 50 60Hz Display 3 digit channel display Power 8 Watts Channel Selector Up Down selector buttons Exterior ABS resin fiber black Dimensions 9 x 6 x 2 8 Display 3 digit channel display Channel Selector Dimensions Up Down selector buttons 9 x 6 x 2 8
24. tially below OdBmV result in weak fuzzy snowy pictures FCC states OdBmV minimum at TV and 15dBmV maximum Signals above 10dBmV may overdrive older TV sets which don t have modern automatic gain controls which can handle signals to 40dBmV 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 so 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 nun B unn B ann amplification and usually adjustable gain and tilt too Your system should provide 10dBmV to every TV maximum is 15 5dBmV per the FCC 20005000 00000000 EEEE Reverse isolation is used to prevent the signal from your CVT from leaking out to the antenna or cable input Reverse isolation is accomplished by placing an
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