Open House H881 ChannelPlus User manual

The H881 modulator combiner hubhas inputs for 8 modulators
for distribution through a coax panel. Signals from
all 8 inputs are combined into a single
output. This output can be
connected to the modulator
input of a coax panel such
as the H838HHR or
H838BID. When used
with the H838, each of 8
locations has a broadband
feed as well as the ability
to insert channels into the
system.
ChannelPlus Modulator Combiner Hub
1
2
3
1) Hook from the top
2) Swing into place
3) Push button to lock
OpenHouse modules attach from the top
tm
ChannelPlus model H616
Telephone Master Hub (4 lines x 6 phones)
Telephone Master Hub (4 lines x 6 phones)
Telephones
From
Telco
From
Telco
RJ31XRJ31X
Out
Expansion
Ports
Expansion
Ports
R
T
R
T
4
R
T
R
T
3
R
T
R
T
2
R
T
R
T
1
Modulators
ChannelPlusmodelH881
VideoCombinerHub(8inputs x1output)
+12vdc
Gnd
Output
ModulatorCombiner8x1
470MHzto860MHz
Televisions
+12vdc
Gnd
IR
Modulators CATV
/Ant
A
B
+Pwr
High Headroom Amp w/IR Engine
Adaptor
(included)
LED glows when
power is applied
Up to 8 TV locations
Input from up
to 8 locations
RG-6 Coaxial cable
RG-6 Coaxial cable
Model
H881
DVD, VCR, or Satellite
Modulator
Typical Installation
Antenna or cable
(H838HHR)
Cable only
(H838BID)
The H881 modulator combiner hub work like a zero-loss combiner. The
modulated signals you put on the inputs will appear on the outputs with
about 1dB of gain. When the output of the H881 is connected to one of
the modulator inputs of the H838, signals will automatically appear on the
outputs of the H838 at an FCC legal level.
Note: The H881 does not pass IR information. To control a modulator
from a remote location, use a modulator with IR control such as the H564
and connect to the B+pwr input of the H838.
Specifications: typical @ 25°C ± 5° C
Number of modulator inputs 8
Gain, modulator input to output ~1
Bandwidth 400-860MHz
Nominal modulator input level 25dBmV
Maximum number of modulated channels 16
Power supply (370-086 included)
dB
15 VDC @ 300mA
Model H838HHR shown
Connect modulators
to A or B inputs
Modulators
+15vdc
Gnd
Modulator Combiner Hub 8x1
400MHz to 860MHz
Out
350-086 power
supply (included)
Each of 8 locations can have
its own modulator for
distribution to the entire
system
Things To Watch For:
Herringbone interference on modulator channel (diagonal lines):
Herringbone interference on many channels, including
modulated channel (disappears when you remove the
CATV/antenna feed)
You may have chosen a 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.
: 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 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.
No picture
Weak ChannelPlus UHF channel
Audio volume is low
No color on ChannelPlus channels
… 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.
… 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.
See the section on programming.

multiplex
technology, inc.
®
TM
ChannelPlus
Modulator Combiner Hub
H881
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.
ChannelPlus Enclosures, Modules,
Accessories & Wall Plates
ChannelPlus model H628
Data Hub (8 cables, TIA-568A) Category 5 Compliant
OUT
IN
532-230 5MHzto 1000MHz
OUT IN OUT IN OUT IN OUT IN
SPLITTER
COMBINER
R
TelephonesFrom
Telco
ChannelPlus model H801
Combo Hub (2 lines x 6 phones, 1input x 4 televisions)
R
T
2
R
T
1
ChannelPlus model H616
Telephone Master Hub (4 lines x 6 phones)
Telephones
From
Telco
RJ31X
Out
Expansion
Ports
R
T
4
R
T
3
R
T
2
R
T
1
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.
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.
Telephone hubs
Connections for 1-4 phone lines to
every room. Starter hub adds RJ-
31X jack for security system dialer.
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
IR engines.
modulator
inputs and
AV modulators
(for service center)
Create a new TV channel for a front
door camera. Some models feature
Cat-5 input connections.
TM
Compatible
Service center
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.
AV modulators
(for media center)
Create new TV channels for DVD, VCR,
or a satellite receiver. These modulators
sit in the media center. Some offer true
MTS stereo.
®
model 5445 quad digital modulator
pll frequency control
D
C
BA
program
select
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.
IR Accessories
Control video devices from any room.
New OpenHouse products are added all the time.
Visit our website to learn more: www.openhousesystem.com
Wiring a house for OpenHouse
Typical Room Media Center Home Office
Good
Better
Best
1 Cat-5
1 RG-6
1 Cat-5
3 RG-6
1 Cat-5
2 RG-6
2 Cat-5
1 RG-6
2 Cat-5
2 RG-6
2 Cat-5
3 RG-6
3 Cat-5
3 RG-6
2 Cat-5
2 RG-6
3 Cat-5
3 RG-6
Good ...
Typical room - phone, TV
Media center - phone, satellite receiver, AV modulators
Home office - phone, TV,
Better …
Typical room - phone, TV, ethernet
Media center - phone, TV, satellite receiver, AV modulators
Home office -
Best …
cable modem
ethernet,
phone, TV, ethernet, cable modem
Typical room - phone, TV, ethernet, satellite receiver
Media center - phone, TV, ethernet, satellite receiver, AV modulators, hi-speed data
Home office - phone, TV, ethernet, satellite receiver, cable modem, hi-speed data
The cables in an OpenHouse run from the various rooms of the house
directly to the service center location.(This is known as ‘home run’
wiring.) Two types of wire are used for communication and
entertainment: Cat-5, 4-UTP (4 nshielded wisted airs) wire handles
data or 1 to 4 telephone lines. RG-6 coax handles television (antenna or
cable), satellite dish, cable modem, or AV modulator signals. (An AV
modulator creates new TV channels for front door camera, DVD player, a
VCR or a satellite receiver.)
We recommend the following pre-wire schemes . Run these wires from
the service center to the rooms indicated.
UTP
Multiplex Technology, Inc., Brea, CA 92821Multiplex Technology, Inc., Brea, CA 92821
600-177 Rev. A600-177 Rev. A
***
3001 Enterprise Street, Brea, CA 92821-6213, U.S.A.
714-996-4100 800-999-5225 FAX [phone] www.channelplus.com