Multiplex Technology CHANNEL PLUS 3515 User's Manual
Contents
1. Channel PERFORMANCE MULTI ROOM VIDEO Multi room Video Distribution System Installation Manual For use with model 2133 IR targets inputs _ m Model 3515 This device complies with the FCC s Part 15 Rules for TV interface devices Any change or modification to this device without the permission of Multiplex Technology Inc may void the user s authority to operate this equipment multiplex technology imc Controls and Connections This ChannelPlus model 3515 video distribution system contains a digitally tuned video modulator that converts any baseband video and audio signal to a user selected UHF or Ultraband CATV channel An internal quartz crystal reference oscillator and PLL circuitry ensure drift free performance The user selects the output frequency channel using the program button to enter the number of the desired channel Optionally the model 3515 may be programmed by a computer running Windows 95 Any TV connected to the output via coax can receive the signals when the TV is tuned to the proper channel Model 3515 Modulator section 8 Boo a RF ou es Program switch to enter Power supply the channel number 15VDC 300mA Use a paper clip Audio loop thru IR LED shows DA when IR data is Audio input being transmitted Right and left are combined for monaural Power LED also Video input2. is the default for the ChannelPlus 3515 modulator However if the cable service uses HRC or the TV appears to search for the house channels the modulator can be reprogrammed to use HRC assignments by entering the number 98 Set to IRC by entering a 99 Both of these settings are only used for setting HRC IRC Common questions Can an amplifier be used on an output to drive signals over longer cable paths No The IR remote control feature will be defeated ifan external amplifier is used Can a splitter be used on one or more outputs in order to add more TVs No The model 3515 Multi room Video Distribution System is a pre engineered system providing optimum signal levels to each TV for clear crisp picture quality Each time a splitter is added there is lowering of signal level called insertion loss Insertion losses upset system performance Additionally the IR remote control feature will be defeated bt hang with connectors on the side To hang with connectors on the bottom or top Ag Mounting hole template Specifications typical 25 C 5 C 3515 Inputs video 1 Vp p 75a audio 1 Vrms 47kQ L amp R inputs combined for monaural Video differential gain 4 performance differential phase lt 4 signal noise 55 dB RF output standard UHF CATV channel ranges 14 64 65 125 excluding 95 99 output level 15 dBmV 75dBuV IM distorti
3. aids in programming Outputs for IR emitter Model 3515 RF section For use with model 2133 IR targets Connection for Modulator Section Requires coax cable RG 6 recommended Expansion input for other modulators 25dBmV max Outputs for TVs 8 Input for cable or antenna Programming the model 3515 by computer You may program the channel assignment from a front panel switch or by a computer running Windows 95 You will need to download the instructions from our web site http Avww channelplus com The files are located in the Integrated Modulator section Run the program to extract the files and follow the instructions in the readme txt file You must have a sound card capable of generating wav files An audio loop thru is provided so that the 3515 may be placed between the computer and speaker system Sample System Diagram In this system CATV or antenna channels are available on all TVs In addition the DVD player inside the computer will play DVD movies on channel 70 onall TVs To powered speakers Cables supplied Model 3515 EA To video audio 4S outputs of computer ect Attach the model 2173 IR emitter directly over the target for IR mouse or IR trackball RG6 coax Gal Cable supplied for connection Gel 7 C to RCA type audio jacks i ie j 7 3 Ss Any or all TVs
4. ic legal rights and you may have other rights which may vary from state to state Multiplex Technology Inc Brea CA 92821
5. may have a model 2133 IR Target a NRS Use only shielded 75 ohm coax ia To more TVs RF section Distributes to as many as 8 TVs Control the DVD from any room using IR mouse or trackball CATV Antenna Bn a gt Expansion port The 3515 RF section has an expansion port to allow for additional video modulators E g you may add a front door camera that would be viewed on channel 73 and an LV player viewed on channel 75 The expansion port has gt 85dB of antenna isolation required by FCC part 15 when using video modulators with an antenna Manual Programming Examples To program modulator to channel 67 2 digit channel Press program switch 6 times Wait for pwr LED to light SOF o IR Press program switch 7 more times Press program switch 1 time Wait for pwr LED to light ready for next number Oz o o pwr IR Press program switch 2 more times Wait for pwr LED to light ready for next number 7O5 o IN pwr ress program switch 10 more times press 10 to enter a zero Valid Channels Channel Spacing Error indication Channel number readback 14 64 UHF cha
6. n ChannelPlus channels You may have chosen the incorrect cable standard Not all televisions can accommodate the 1 25MHz frequency difference between the H and cable standards See the section on programming Infrared Remote Control Problems Use the red IR DATA light on the side of the modulator section as a trouble shooting aid This light will blink as remote control signals are relayed If the light is on constantly one or more IR targets is receiving electrical or optical noise At the modulator section unit begin to disconnect the outputs to the TVs until the IR DATA light goes off This will tell you which IR target is the source of the noise Next cover the front ofthe offending IR target Ifthe IR DATA light turn off the IR target is seeing a source of IR noise such as a solid state flourescent lamp If the light does not go out the problem may be radiated electrical noise from the TV Reposition this IR target If repositioning the IR target does not help the TV may be conducting noise from its input Place a DC block between the IR target and the TV Ifthe IR DATA light seems to indicate proper operation but the component is not being controlled the IR emitter may be mis located Be sure the emitters are in front of the IR sensor td Z gt Simple DC block for RF Inexpensive 0 20dB attenuator Changing modulation standards Cable HRC and IRC considerations Most cable services use IRC frequency assignments This
7. nnels 65 125 CATV channels 95 99 not valid Skip at least one number between the modulator channel and broadcast channels Channels 14 and 16 OK Channels 14 and 15 Illegal If an error has occurred or an incorrect channel is entered the LED will flash quickly for a second and return to the previous settings A readback mode will display the current channel assignments To read back modulator channel assignment example 3515 has been programmed to channel 108 Hold program button down while applying power o o pwr Led blinks 10 times amp pauses 10 is read back as 0 o SOFI o pwr o Led blinks 8 times aN o Things to watch for No picture Verify that the video source is on and is producing a video signal Check that the TV and the modulator are tuned to the same channel For example if the modulator is broadcasting on UHF channel 16 make sure the TV is on UHF 16 rather than CATV 16 UHF 16 and CATV 16 are at different frequencies Weak ChannelPlus UHF channel If the TV has a separate UHF input be sure that it is connected LEDs blink The display will blink if you have made an illegal choice See the section on programming Herringbone interference on ChannelPlus channel diagonal lines You may have chosen a channel numbe
8. on 60 dBC alternate channel 45dBC 12MHz Gain CATV Ant to output 0 dB Isolation Mod in to Ant in 85 dB 450MHz 850MHz Power supply model number 350 076 UL listed output current 300mA output voltage 15 VDC input power 105 125 VAC power consumption lt 9 watts Physical modulator section 1 0x4 6x3 5 2 5x11 7x8 8em Olbs 11 oz 1 19kg RF section 0 9x6 3x2 5 2 4x16x6 4cem 1 Ibs 2 oz 0 5kg 600 108 Warranty Multiplex Technology Inc warrants this product to be free from defects in materials and workmanship for a period of one year from the date of purchase or MTI will repair or at its option replace the defective product To obtain warranty service call MTI for a return material authorization RMA number and return the product prepaid Attention Customer Service Please put the RMA number on the outside of the carton Any implied warranty arising from the sale of the product including implied warranties of merchantability and fitness for purpose are limited to the warranty stated above MTI shall not be responsible for losses or damages or expenses whether direct consequential or incidental arising from the use of or the inability to use this product Some states do not allow limitations on how long the implied warranty lasts or the exclusion or limitation or incidental or consequential damages so the above limitations and exclusions may not apply to you This warranty gives you specif
9. r that is not completely vacant Distant UHF stations may be un watchable but will cause interference if you try to create a new channel at the same frequency Also cable companies often have extra signals where there should be none Try moving the ChannelPlus channel to another number You may have to add a low pass filter to remove cable company noise Ifa filter does not work try adding a DC block to remove common mode interference Herringbone interference on many channels including ChannelPlus channels disappears when you remove the CATV Ant feed The RF amplifier can be overloaded by abnormally strong signals Often you can cure the problem with a simple attenuator Use a variable attenuator and try to find a signal level where the interference just disappears Sometimes the problem is one station that is far stronger than the rest In this case attenuating all of the signals with a simple attenuator will cause the desired stations to be weak snowy In this case you must reduce the strength of only the offending station A common FM trap will help if the problem is a nearby FM tower Ifthe problem is a nearby TV station often the station management can provide suitable filters Audio volume is low The left and right audio inputs are combined for monaural For proper audio level both right and left inputs must be used If you have a mono source connect it to both right and left inputs using an RCA Y connector No color o
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