Linear H512 Owner's Manual

ChannelPlus Single Channel Modulator

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The H512 single channel modulator creates a new channel to add to

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existing television channels. The H512 creates this new channel from a

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video signal it receives via a single CAT-5 cable connected to one of its

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companion products such as the H721 camera or H110 wall plate. Any TV

ChannelInjector (single channel via CAT-5)

ChannelPlusmodel H511HHR

connected to the output via coax can receive the signal, when tuned to the
proper channel.

Typical Installation

Terminate cable with a
RJ-45 connector and
connect to the H512.

Use T568A Residential wiring pin out.

CAT-5 video

Single Channel Modulator

To camera or Wallplate

(H721 typical)

Default Setting for H512

When not using baseband connectors insert all jumpers, (W1, W2, W3 &
W4 are installed at factory).

Optional Settings

To use baseband connectors as outputs when H512 receives video from
Cat-5 video source, Insert W2, W3, & W4, Remove W1.

To use baseband connectors as inputs when using the H512 as a stand
alone modulator. Insert W1 and remove W2, W3 & W4.

Coax Panel (Model H838HHR typical)

IR

Gnd

+12vdc

B

+Pwr

Modulators

A

350-079 Power Supply (Included).

Enter the new channel using

the push button.Program

Program

W1

W3W2

W4

H512

Output

Video Audio L

Power the H512 last, make all

Audio R

Power

cable and CAT-5 connections
first.

Jumpers

High Headroom Amp w/IR Engine

Televisions

CATV

/Ant

OpenHouse modules attach from the top

tm

1

1) Hook from the top

2) Swing into place

TelephoneMaster Hub (4 lines x 6 phones)

RTR

4

T

R

R

3

T

T

R

R

2

T

T
R

R

1

T

T

From

From

Expansion

Expansion

Telco

Telco

TelephoneMaster Hub (4 lines x 6 phones)

Ports

Ports

RJ31XRJ31X

Out

ChannelPlusmodel H616

TelephonesTelephones

3) Push button to lock

3

2

Programming the H512

Program the new channel using the push button to enter channel digits intothe
H512. This new channel should be an unused channel. It should have no interference or
trace of a picture - just “snow”. There must also be one unused channel both above and
below the selected channel to avoid interference. Below is a simple step by step example
of how to program a channel - cable channel :

Press button

program

time

1

Press button

program

more times

2

Press button

program

more times

10

(press 10 to
enter a ‘zero’)

Cable HRC and IRC considerations:
Most cable services use standard or IRC frequency assignments. This is the default for the
H512. However, if the cable services use HRC or the TV appears to search for the “created
channel”, program the channel injector for HRC.

Program

120

Wait for LED

power

(ready for next number.)

Wait for LED

power

(ready for next number.)

LED comes back on when

done. If an incorrect

channel is entered, LED

will flash quickly and

return to the previous

setting.

For HRC enter a 98. Reset to IRC by entering 99.

Entries 98 and 99 are for setting HRC or IRC only. They do not change the channel number.

CAT-5 Cable Length Limitations:

The length of the CAT-5 cable that runs between the H512 and the camera or wall plate is limited.
See the individual camera or wall plate manuals for these CAT-5 cable run limitations.

UP TO 8 TELEVISIONS

Things To Watch For:

No picture

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. Also ... Make sure the H512 and
camera or wall plate are wired properly.

Weak ChannelPlus UHF channel

connected.

Herringbone interference on modulator channel (diagonal lines):

channel number that is not completely vacant. Distant UHF stations may not be 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 modulator
channel to another number. You may have to add a low pass filter to remove the cable company
noise. If the filter does not work, try adding a DC-block to remove common mode interference.

Herringbone interference on many channels, including modulated channel (disappears
when you remove the CATV/antenna feed)

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 is far stronger than the rest. In this case, attenuating all of the signals with
a simple attenuator may cause the desired stations to be weak (snowy). You must reduce the
strength of the only 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. See the section on programming.

… Check that the TV and the modulator are tuned to the same channel. For example,

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

You may have chosen a

: The RF amplifier can be overloaded by abnormally

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

… You may have chosen the incorrect cable standard. Not

Specifications: typical @ 25 C ± 5 C

Inputs

(Ports)

Video
performance

video

video termination
(switch selectable)

audio

differential gain
differential phase

OO

1Vp-p@75

75 in normal mode (NORM)

>1M in loop through mode (LOOP)

1 V rms @ 47k

L & R inputs combined for monaural

4%

<4º

signal/noise 55 dB

RF output

Power supply

channel ranges
output level

IM distortion
alternate channel
model number
output current

output voltage
input power

UHF CATVstandard

14-64

65-125(excluding 95-99)

+25 dBmV (+85dBuV)

-60 dBC

-45dBC @ 12MHz

350-079

600mA

15 VDC

105-125 VAC

DECLARATION OF CONFORMITY

THIS DEVICE COMPLIES WITH PART 15 OF THE FCC RULES. OPERATION IS SUBJECT TO
THE FOLLOWING TWO CONDITIONS: (1) THIS DEVICE MAY NOT CAUSE HARMFUL
INTERFERENCE, AND (2) THIS DEVICE MUST ACCEPT ANY INTERFERENCE RECEIVED,
INCLUDING INTERFERENCE THAT MAY CAUSE UNDESIRED OPERATION.

Installation requirements:

FCC classifies this product under part 15 of its rules as a “television interface device”.
Systems designed using television interface devices have the following legal requirements:

1) The modulated channel signal strength may not exceed 15.56dBmV at any television.

Federal Regulation 47CFR15.115(b)(1)(i).

2) If an antenna is used in the system, the modulated channel signal strength may not exceed ­51dBmV at the antenna input port.

For the Installer:

Any system you design must comply with these regulations. As the installer, you are responsible.
The H512 has the necessary characteristics to comply with the above requirements as designed
without additional accessories.

Federal Regulation 47CFR15.115(c)(4).

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

600-233 Rev. A600-233 Rev. A

TM

3 RG-6

2 RG-6

2 RG-6

3 Cat-5

2 Cat-5

1 Cat-5

Home Office

3 RG-6

3 RG-6

3 Cat-5

2 Cat-5

1 Cat-5

Media Center

3 RG-6

ethernet,

cable modem

2 RG-6

1 RG-6

1 RG-6

phone, TV, ethernet, cable modem

2 Cat-5

2 Cat-5

1 Cat-5

Typical Room

Best

Better

Good

Home office - phone, TV, ethernet, satellite receiver, cable modem, hi-speed data
Media center - phone, TV, ethernet, satellite receiver, AV modulators, hi-speed data

Compatible

Typical room - phone, TV, ethernet, satellite receiver

Best …

Home office -

ChannelPlus Enclosures, Modules,

Media center - phone, TV, satellite receiver, AV modulators
Typical room - phone, TV, ethernet

Accessories & Wall Plates

Better …
Home office - phone, TV,
Media center - phone, satellite receiver, AV modulators
Typical room - phone, TV

Service center

Good ...

enclosures

A full line of OpenHouse compatible
enclosures, from simple, inexpensive
mounting plates to high capacity in-wall
cabinets. AC outlets can be mounted
inside the cabinets using a UL listed
accessory.

Starter systems

RF splitters and telephone punch
downs. When it is time to upgrade,
just snap this module out and
replace with one of more of the
more sophisticated units.

OUTINOUT

Telco

R

2

T
R

1

T

IN

IN

TelephonesFrom

Combo Hub (2 lines x 6 phones, 1input x 4 televisions)

OUT

532-230 5MHz to 1000MHz

COMBINERCOMBINER

SPLITTER

OUTINOUT

IN

R

ChannelPlus model H801

TM

®

the service center to the rooms indicated.

We recommend the following pre-wire schemes . Run these wires from

VCR or a satellite receiver.)

modulator creates new TV channels for front door camera, DVD player, a

cable), satellite dish, cable modem, or AV modulator signals. (An AV

data or 1 to 4 telephone lines. RG-6 coax handles television (antenna or

UTP

entertainment: Cat-5, 4-UTP (4 nshielded wisted airs) wire handles

Data Hub (8 cables, TIA-568A) Category 5 Compliant

ChannelPlus model H628

Data hubs

Termination blocks for the CAT-5 cables,
Ethernet hubs. Bring the Internet to any
room in the home. Or create a home data
network.

wiring.) Two types of wire are used for communication and

directly to the service center location.(This is known as ‘home run’

The cables in an OpenHouse run from the various rooms of the house

Wiring a house for OpenHouse

Model H512

Single Channel Modulator

Telephone hubs

Connections for 1-4 phone lines to
every room. Starter hub adds RJ­31X jack for security system dialer.

Wall plates

Wall plate systems for all rooms. The typical room gets TV
and telephone. The Home office wall plate adds data ports.
The media center wall plate adds satellite feeds.

From
Telco

R

4

T
R

3

T
R

2

T
R

1

T

Telephone Master Hub (4 linesx6phones)

Expansion

Ports

RJ31X

Out

ChannelPlus model H616

Telephones

ChannelPlus

Coax panels

Distribute antenna or cable TV to every
room of the house. Some models include
bi-directional amplifiers for interactive cable
systems. Some models include
inputs and

IR engines.

modulator

multiplex

®

technology, inc.

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

714-996-4100 800-999-5225 FAX[phone] www.openhousesystems.com

*

*

*

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 toMultiplex Technology, Inc., 3001 Enterprise Street, Brea, CA

92821, Attention: CustomerService. 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 mayhave other rights which may vary from state to state.

AV modulators
(for service center)

Create a new TV channel for a front
door camera. Some models feature
Cat-5 input connections.

AV modulators
(for media center)

Create new TV channels for DVD, VCR,

®

select

program

DCBA

model 5445 quad digital modulator

pll frequency control

or a satellite receiver. These modulators
sit in the media center. Some offer true
MTS stereo.

IR Accessories

Control video devices from any room.

New ChannelPlus products are added all the
time. Visit out website to learn more:
www.openshousesystems.com