Multiplex Technology Channel Plus 3425 Users Manual

Linear-3400-Series-Owners-Manual linear-3400-series-owners-manual

CHANNEL PLUS 3425 3400manual

3445 to the manual d8e82681-2f12-44d8-b9e4-fc8147b99fd0

: Multiplex-Technology Multiplex-Technology-Channel-Plus-3425-Users-Manual-558181 multiplex-technology-channel-plus-3425-users-manual-558181 multiplex-technology pdf

Open the PDF directly: View PDF .
Page Count: 4

Warranty

600-106 Rev B

600-106 Rev B

Multiplex Technology, Inc. warrants this products 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 92821

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.

®

Ch

anne

l

®

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.

Ant /

CATV

INPUT

For use with model

2133 IR targets

INPUTS

MODULATORS

AB+Pwr

OUTPUTS

To TVs

distribution panel

model 3445 four channel integrated modulator & distribution system

model 3445 four channel integrated modulator & distribution system

A B C D

pll frequency control

pll frequency control

select

IR

program

®

program

This ChannelPlus 3400 Series video distribution system contains digitally-tuned

video modulators that convert 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 "select" button to choose which modulator and

the "program" button to enter the number of 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

2

Ant /

CATV

INPUT

For use with model

2133 IR targets

INPUTS

MODULATORS

AB+Pwr

OUTPUTS

To TVs

distribution panel

}

CH C CH D

VIDEO AUDIO L AUDIO R

CH A CH B

VIDEO AUDIO L AUDIO R

OUTPUT

600mA

15VDC

POWER

®

model 3445 four channel integrated modulator and distribution system

pll frequency control

D

C

BA

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)

Remove jumper for Hi-Z

(See manual)

ABCD

C

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 settings are 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

all

Changing modulation standards

Common questions

7

Specifications: typical @ 25 C ± 5 C

OO

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

4%

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

… No. The

model 3425/3445 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.

Mounting hole template

To hang with connectors on the side

To hang with connectors on the bottom or top

6

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 are at different frequencies.

… 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 left inputs using an RCA ‘Y’ connector.

See the section on 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 color on ChannelPlus channels

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

blink if you have made an ‘illegal’ choice. See the section on programming.

...

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.

… 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. If the problem is a nearby TV station, often the

station management can provide suitable filters.

… You may have chosen the incorrect cable 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 a trouble shooting aid. This light will blink as remote control signals are relayed.

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.

IR DATA

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 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 conducting noise from its input. Place a

DC block between the IR target and the TV.

IR DATA

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

CH C CH D

VIDEO AUDIO L AUDIO R

CH A CH B

VIDEO AUDIO L 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)

3

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.

Remove jumper for Hi-Z

(See manual)

ABCD

To program modulator to channelC 120

To program modulator to channelB67

Press button

times

program

6

Press button

time

program

1

Press button

more times

program

7

Press button

more times

program

2

Press button

more times

(press 10 to enter a ‘zero’)

program

10

Wait for channel LED to light

(ready for next number.)

B

Wait for channel LED to light

(ready for next number.)

C

Wait for channel LED to light

(ready for next number.)

C

P

rogramm

i

ng

E

xamp

l

es:

Press button until

channel LED is on

select

B

Press button until

channel LED is on

select

C

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

model 3445 four channel integrated modulator & distribution system

model 3445 four channel integrated modulator &distribution system

A B C D

pll frequency control

pll frequency control

select

select

program

program

®

IR

program

select

model 3445 four channel integrated modulator & distribution system

model 3445 four channel integrated modulator &distribution system

A B C D

pll frequency control

pll frequency control

select

select

program

program

®

IR

program

select

4

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 move it away from the other.

To readback modulator Cchannel 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)

10

model 3445 four channel integrated modulator & distribution system

model 3445 four channel integrated modulator &distribution system

A B C D

pll frequency control

pll frequency control

select program

®

IR

program

select

Press button until

channel LED is on

select

C

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.

5