ChannelPlus Video Hubs
distribute antenna or cable signals to up to eight
OpenHousetm modules attach from the top
The H838 video hubs
televisions. The hubs provide two video modulator inputs to
create new channels and have built-in IR engines to
support 5V IR targets.
1
1) Hook from the top
2) Swing into place
3) push button to lock
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Two models are available.
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The H838HHR has the isolation
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required by the FCC for any
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3
system that has modulators and
an antenna.
Telephone Master Hub (4 lines
x
6
phones)
ChannelPlus model H616
From
Telco
Expansion
Ports
Telephones
elevisions)
H838HHR
t
8
R
T
RJ31X
x
4
3
2
1
R
T
inputs
(3
The H838BID has a 5-42MHz
reverse channel to support
bidirectional cable systems
(cable modems, pay-per-view
and interactive cable).
R
T
ub
H
model
Out
R
T
Video
ChannelPlus
2
Expanding the television outputs
You may connect as many as 8 more H838s to the outputs of a master H838 for a
total of 64 television outlets. The longest recommended coax run should not
exceed 150’. (That is a total of the coax from master to slave and from slave to TV.)
350-086 power
supply (included)
Typical Installation
High Headroom Amp w/IR Engine
Adaptor (included)
Model H838HHR shown
B
+Pwr
Antenna or cable
High Headroom Amp w/IR Engine
Televisions
CATV
/Ant
Modulators
A
(H838HHR)
Cable only
(H838BID)
B
+Pwr
Master H838
Televisions
CATV
/Ant
Modulators
LED glows when
power is applied
A
High Headroom Amp w/IR Engine
Connect modulators
to A or B inputs
Up to 8 televisions
B
+Pwr
Televisions
CATV
/Ant
Modulators
A
Modulator
RG-6 Coaxial cable
Slave H838
ChannelPlus model
2181 allows the H838
to expand IR control
also. Use one 2181 for
each slave H838.
High Headroom Amp w/IR Engine
The H838 hub work like a zero-loss splitter. The signals
you put on the antenna/CATV input will appear on the
outputs with about 3dB of gain. Modulator inputs will
automatically appear on the outputs at an FCC legal level.
DVD, VCR, or Satellite
B
+Pwr
Televisions
CATV
/An
Modulators
A
IR repeating system
Slave H838
Specifications: typical @ 25°C 5° C
Gain:
High Headroom Amp w/IR Engine
H838HHR
3dB
H838BID
3dB
CATV/Ant input to TV output
Modulator input to TV output
TV output to CATV/Ant input
(5-42MHZ reverse channel)
Isolation
-10dB
na
-10dB
-15dB
B
+Pw
Televisions
CATV
/Ant
Modulators
Modulator input to CATV/Ant
Bandwidth
Forward
>80dB
>35dB
A
IR information is only
available on port B
5-806MHz
na
20dBmV
54-806MHz
5-42MHz
20dBmV
Reverse
Max CATV/Antenna input
(64 channels)
Power supply (370-086 included)
15 VDC @ 300mA
15 VDC @ 300mA
Things To Watch For:
ChannelPlus
H542, H544,
H562, or H564
modulator
Herringbone interference on modulator channel (diagonal lines): 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.
Herringbone interference on many channels, including modulator channels (disappears
when you remove the CATV/antenna feed): 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.
Model H933
IR target
Model H973
IR emitter
Typical remote control
To control your video devices, add a modulator with IR repeating, an IR target and
an IR emitter. Point a remote control at the target in the bedroom and IR pulses
are repeated by the emitter, controlling the DVD player in the den.
Any or all of the television ports may have targets connected.
FCC Requirements:
THIS PRODUCT COMPLIES WITH FCC REQUIREMENTS.
A SYSTEM USING THIS DEVICE WILL COMPLY WITH FCC REQUIREMENTS.
USE ONLY VIDEO MODULATORS THAT COMPLY WITH PART 15
OF THE FCC RULES AND HAVE 25dBmV MAX OUTPUT LEVELS. FAILURE TO
DO SO MAY VOID THE USER’S AUTHORITY TO OPERATE THIS EQUIPMENT.
THE H838HHR IS SUITABLE FOR USE WITH AN ANTENNA OR WITH
CATV SYSTEMS.
Expanding the modulator inputs
Add a model H881 active combiner and a single modulator input becomes eight.
THE H838BID IS SUITABLE FOR USE WITH CATV SYSTEMS.
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