Multiplex CHANNEL PLUS 3425, ChannelPlus 3445 Installation Manual

Page 1

Warranty

600-106 Rev B

Multiplex Technology, Inc. warrants this products to be free from defects in materials and workmanship for a period of one yearfromthedateofpurchase 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 ofthe 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 92821

PERFORMANCE MULTI-ROOM VIDEO

Models

3425/3445

Multi-room Video Distribution System

Installation Manual

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

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

multiplex

technology, inc.

anne

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 tooperate this equipment.

Ant /

CATV

INPUT

For use with model 2133 IR targets

INPUTS

MODULATORS

A B+Pwr

OUTPUTS

ToTVs

distribution panel

model 3445 four channel integrated modulator & distribution system

A B C D

pll frequency control

select

program

Page 2

This ChannelPlus 3400 Series video distribution system contains digitally-tuned video modulators that convert any baseband video and audio signal to a userselected 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"select" button to choose which modulator and the "program" button to enter the numberof the desired channel. Any TV connected to the output via coax can receive the signals, when the TV is tuned to the proper channel.

Models available:

3425 2 channel system 3445 4 channel system

Model 3245/3445 - RF section

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

Ant /

CATV

INPUT

For use with model 2133 IR targets

INPUTS

MODULATORS

B+Pwr

OUTPUTS

ToTVs

distribution panel

}

CHC

CHD

VIDEO AUDIOL AUDIO R

CHA

CHB

VIDEO AUDIOL AUDIO R

OUTPUT

600mA

15VDC

POWER

model 3445 four channel integrated modulator and distribution system

pll frequency control

DCBA

program

select

Controls and Connections - Model 3445 shown

RF output

Select button chooses

the modulator.

Program button enters

the channel number

Modulator LEDs show which

modulator is selected

Video inputs

Power supply 15VDC 600mA

Audio inputs: Right and Left

Terminating jumpers (remove for hi-Z)

Removejumper for Hi-Z

(Seemanual)

ABCD

ADB

Option: To connect the video and audio to a local monitor, use RCA type ‘Y’ adaptors and remove the ’LOOP’ jumper for this channel.

VIDEO

AUDIO L

AUDIO R

Cable HRC and IRC considerations

Most cable services use IRC frequency assignments. This is the default for the ChannelPlus 3 . 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 settingsare only used for setting HRC/IRC. : This setting can be entered on any modulator channel, A, B, C, or D, and affects all channel assignments for that unit. Cable channels must either be IRC or

HRC.

400 series’modulators

Note

all

Changing modulation standards

Common questions

Specifications: typical @ 25 C ± 5 C

3400 Series

RF output

Power supply (UL listed)

Physical

performance

Video

Inputs

65-125

(excluding 95-99)

14-64

channel ranges

model number

signal/noise 55 dB

-60 dBC

0dB

<9 watts

+15 dBmV (75dBµV)

105-125 VAC

-45dBC @ 12MHz

600mA

15 VDC

differential phase

<4º

differential gain

L & R inputs combined for monaural

audio

video

UHF

350-079

CATVstandard

1Vp-p@75 1 Vrms @ 47K

output level

input power

IM distortion

power consumption

alternate channel Gain CATV/Ant to output

output voltage

output current

1 lbs 2 oz (0.5kg)

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

2 lbs 10 oz (1.19kg)

modulator section 1.5x7.9x5.5“ (3.8x20.0x14.1cm)

Can an amplifier be used on an output to drive signals over longer cable paths?

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

… No.

The IR remotecontrol feature will bedefeated if an externalamplifier is used.

… No. The model 3425/3445 Multi-room Video DistributionSystem 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, theIR remote control featurewill be defeated.

Mounting hole template

To hang with connectors on the side

To hang with connectors on the bottom or top

Page 3

Things to watch for:

No picture

Weak ChannelPlus UHF channel

Audio volume is low

… 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 areat differentfrequencies.

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

connected.

… 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 leftinputs using an RCA‘Y’ connector.

See the sectionon programming.

lightIR DATA

IR DATA

LEDs blink

Herringbone interference on ChannelPlus channel (diagonal lines)

Herringbone interference on many channels, including ChannelPlus channels (disappears when you remove the CATV/Ant feed)

No coloron ChannelPlus channels

... You need to have one unused channel space between channels. The display will

blink if youhave made an ‘illegal’choice. See thesection on programming.

... Youmay have chosen achannel numberthat is not completelyvacant. 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 cablecompany noise. If a filterdoes notwork, try adding a DC-blockto remove common mode interference.

… 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 strongerthan 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 youmust reduce the strength of only the offending station. A common FM trap will help if the problem is anearby FM tower. If the problem is a nearbyTV station, often the station management canprovide suitable filters.

… You may havechosen the incorrectcable standard. Not all televisions can accommodate the 1.25MHz frequency difference between the H and I cable standards.

Infrared Remote Control Problems … Use the red light on the side of the modulator section as atrouble shooting aid. Thislight will blink asremote control signals arerelayed.

If the light seemsto indicate proper operation,but the component isnot being controlled, the IR emittermay be mis-located. Besure the emitters arein front of theIR sensor.

IR DATA

If the light is on constantly, one or more IR targets is receiving electrical or optical noise. At the modulator sectionunit, begin todisconnect the outputsto the TVsuntil the goes off. This will tellyou which IR targetis the source ofthe noise.

Next cover the front of the offending IR target. If the light turns 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 conductingnoise from its input. Place a DC block betweenthe IR target andthe TV.

IR DATA

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

CHC

CHD

VIDEO AUDIOL AUDIO R

CHA

CHB

VIDEO AUDIOL AUDIO R

OUTPUT

600mA

15VDC

POWER

Model 3445

Sample System Diagram

SATELLITE RECEIVER

VCR

DVD

VCR

12:00

Video/audio

outputs

Video/audio

outputs

Video/audio

outputs

CCTV Camera

at front door

CATV/Antenna

In this system, CATV or antenna channels are available on all TVs. In addition the following channels have been added:

Channel 66 -Front door channel Channel 68 -VCR Channel 70 -Satellite receiver Channel 72 -DVD player

RG6 coax preferred

RF section

(Distributes to as many as 8 TVs)

To more TVs

Any or all TVs may have a model 2133 IR Target

Control the DVD, DSS or VCR from any room.

Model 2173 IR emitter repeats what the IR target ‘sees’ in the other room.

Use only shielded 75 ohm coax

Attach the IR emitter directly over the IR sensor.

Removejumper for Hi-Z

(Seemanual)

ABCD

Page 4

To program modulator to channelC 120

To program modulator to channelB67

Press button

times

program

Press button

time

program

Press button

more times

program

Press button

more times

program

Press button

more times

(press 10 to enter a ‘zero’)

program

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

rogrammingExamples:

Press button until

channel LED is on

select

Press button until

channel LED is on

select

select program

ABCD

select program

ABCD

select program

ABCD

select program

ABCD

select program

ABCD

select program

ABCD

select program

ABCD

select program

ABCD

select program

ABCD

select program

ABCD

model3445four channel integrated modulator & distribution system

A B C D

pllfrequencycontrol

select

program

select

model3445four channel integrated modulator & distribution system

A B C D

pllfrequencycontrol

select

program

select

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.

If two adjacent channels are selected, the unit will accept the entry but will blink the LEDs of channels that are too close. If this happens, re-program one of the channels to moveit away from the other.

To readback modulator C channel assignment

(example: C has been programmed to channel )108

Hold button down for 5 seconds, then release.

program

Led blinks time and pauses1

Led blinks times8

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

model3445four channel integrated modulator & distribution system

A B C D

pllfrequencycontrol

select program

program

select

Press button until

channel LED is on

select

select program

ABCD

select program

ABCD

select program

ABCD

select program

ABCD

select program

ABCD

Valid Channels:

Channel Spacing:

Error indication:

Channel number readback:

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

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

A readback mode will display the current channel assignments.