Multiplex Technology 3515 User Manual

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Page 1

Controls and Connections

Channel

PERFORMANCE MULTI-ROOM VIDEO

Multi-room Video Distribution System

Installation Manual

model 3515 integrated modulator & distribution system

pwr

MODULATORS

INPUTS

OUTPUTS

To TVs

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.

pll frequency control

For use with model 2133 IR targets

INPUT

Ant /

CATV

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

model3515 integrated modulator & distribution system

pllfrequency control

OUTPUT

POWER 15VDC 300mA

OUT

VIDEO

AUDIO

pwr

RF output Program switch to enter Power supply

15VDC 300mA Audio loop-thru

Audio input: Right and left are combined for monaural

Video input Outputs for IR emitter

Connection for

Model 3515 - RF section

MODULATORS

INPUTS

OUTPUTS

ToTVs

the channel number

(Use a paper clip)

IR LED shows

when IR data is

being transmitted

Power LED also

aids in programming

For use with model 2133 IR targets

Ant /

CATV

INPUT

Modulator Section (Requires coax cable, RG-6 recommended)

}

Expansion input for other modulators (25dBmV max)

Outputs for TVs (8)

Input for cable or antenna

multiplex

technology, inc.

3001 Enterprise Street, Brea, CA 92821-6213, U.S.A.

714-996-4100 * 800-999-5225 * FAX 714-996-4900 * www.channelplus.com

Programming the model 3515 by computer:

Y a computer

ou may program the channel assignment from a front panel switch or by running Windows 95. You will need to download the instructions from our web site, http://www.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.

Page 2

Sample System Diagram

Manual Programming Examples:

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 on allTVs.

To powered

Model 3515

OUTPUT

RG6 coax preferred

POWER 15VDC 300mA

OUT

AUDIO

VIDEO

Attach the model 2173 IR emitter directly over the target for IR mouse or IR trackball.

speakers

Cable supplied for connection to RCA type audio jacks..

Cables supplied

To video/audio

outputs of computer

To program modulator to channel (2 digit channel #)67

pwr

Press

program

switch times

pwrIRpwr

Press

program

switch more times

pwrIRpwr

pwr

Wait for pwr LED to light (ready for next number.)

pwrIRpwr

To program modulator to channel 3 digit channel #)120 (

pwr

Press

program

switch time

pwr

model3515 integrated modulator & distribution system

pllfrequency control

model3515 integrated modulator & distribution system

pllfrequency control

To more TVs

Any or all TVs may have a model 2133 IR Target

RF section

(Distributes to as many as 8 TVs)

Control the DVD from any room

CATV/Antenna

using IR mouse or trackball.

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 > 85dB of antenna isolation required by FCC part 15 when using video modulators with an antenna.

pwrIRpwr

Press

program

switch more times

pwrIRpwr

Press

program

switch more times

(press 10 to enter a ‘zero’)

pwrIRpwr

Wait for pwr LED to light (ready for next number.)

pwrIRpwr

Wait for pwr LED to light (ready for next number.)

pwrIRpwr

Page 3

Valid Channels:

14-64: UHF channels 65-125: CATV channels 95-99: not valid

Channel Spacing:

Skip at least one number between the modulator channel and broadcast channels. Channels 14 and 16: OK. Channels 14 and 15: Illegal.

Error indication:

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.

Channel number readback:

A readback mode will display the current channel assignments.

To read-back modulator channel assignment

(example: 3515 has been programmed to channel )108

model3515 integrated modulator & distribution system

pwrIRpwr

Led blinks times8

pwrIRpwr

Hold button

program

down while applying power

pwrIRpwr

Led blinks times & pauses (“10” is read back as 0)

pwrIRpwr

IR pwr

pwr

Led blinks time & pauses1

pllfrequency control

Things to watch for:

No picture

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 CATV16are at different frequencies.

Weak ChannelPlus UHF channel

connected.

LEDs blink

programming.

Herringbone interference on ChannelPlus channel (diagonal lines)

You may have chosen a channel number 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. If a 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)

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. If the problem is a nearby TV station, often the station management can provide suitable filters.

Audio volume is low

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 on ChannelPlus channels

all televisions can accommodate the 1.25MHz frequency difference between the H and I cable standards.

Infrared Remote Control Problems 

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 goes off. This will tell you which IR target is the source of the noise.

Next cover the front of the offending IR target. If the 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.

If the 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.

 Verify that the video source is on and is producing a video signal. Check that the

 If the TV has a separate UHF input, be sure that it is

... The display will blink if you have made an illegal choice. See the section on

 The RF amplifier can be

 The left and right audio inputs are combined for monaural. For proper

 Youmay have chosen the incorrect cable standard. Not

See the section on programming.

Use the red light on the side of the modulator

IR DATA

...

light

Simple DC-block for RF Inexpensive 0-20dB attenuator

Page 4

Changing modulation standards

Cable HRC and IRC considerations

Most cable services use IRC frequency assignments. This is the default for the ChannelPlus 3515 . However, if the cable service uses HRC or the TV appears to search for the

modulator "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?

The IR remote control feature will be defeated if an external amplifier is used.

Can a splitter be used on one or more outputs in order to add more TVs?

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.

To hang with connectors on the side To hang with connectors on the bottom or top

Mounting hole template

Specifications: typical @ 25 C ± 5 C

3515

Inputs

Video performance

RF output

Power supply (UL listed)

Physical

video audio

L & R inputs combined for monaural differential gain differential phase signal/noise 55 dB

channel ranges

output level IM distortion alternate channel Gain CATV/Ant to output Isolation model number output current output voltage input power power consumption modulator section

RF section 0.9x6.3x2.5 (2.4x16x6.4cm)

(Mod in to Ant in)

1 Vp-p @ 75

<4º

UHF

14-64

+15 dBmV (75dBuV)

-45dBC @ 12MHz

85 dB

105-125 VAC

1.0x4.6x3.5 (2.5x11.7x8.8cm) 0lbs 11 oz (1.19kg)

1 lbs 2 oz (0.5kg)

(excluding 95-99)

-60 dBC

0dB

(450MHz - 850MHz)

350-076

300mA

15 VDC

<9 watts

 No.

 No. The

CATVstandard

65-125

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 to Multiplex Technology, Inc., 3001 Enterprise

Street, Brea, CA 92821, 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 specific legal rights, and you may have other rights which may vary from state to state.

Multiplex Technology, Inc., Brea, CA 92821Multiplex Technology, Inc., Brea, CA 92821