Open House H838 User Manual

The H838 video hubs
televisions. The hubs provide two
Typical Installation
350-086 power
supply (included)
Adaptor (included)
Model H838HHR shown
B
+Pwr
LED glows when Modulators
power is applied
A
Connect modulators
to A or B inputs
Modulator
RG-6 Coaxial cable
The H838 hub work like a zero-loss splitter. The signals
you put on the antenna/CATV input will appear on the
DVD, VCR, or Satellite
outputs with about 3dB of gain. Modulator inputs will
automatically appear on the outputs at an FCC legal level.
IR repeating system
B
+Pwr
Modulators
A
IR information is only
available on port B
ChannelPlus
H542, H544,
H562, or H564
modulator
Model H973
IR emitter
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.
Expanding the modulator inputs
Add a model H881 active combiner and a single modulator input becomes eight.
ChannelPlus Video Hubs
distribute antenna or cable signals to up to eight
video modulator
create new channels and have built-in IR engines to
support 5V IR targets.
Two models are available.
The H838HHR has the isolation
required by the FCC for any
system that has modulators and
) an antenna.
s i o n s
t e l e v i
t s x 8
8 H H R
3 i n p u
The H838BID has a 5-42MHz
l H 8 3
H u b (
m o d e
V i d e o
e l P l u s
C h a n n
reverse channel to support
bidirectional cable systems
(cable modems, pay-per-view
and interactive cable).
High Headroom Amp w/IR Engine
Televisions CATV
/Ant
Up to 8 televisions
High Headroom Amp w/IR Engine
Televisions CATV
/Ant
Model H933
IR target
Typical remote control
OpenHouse
inputs to
1) Hook from the top
2) Swing into place
3) push button to lock
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.)
B
+Pwr
Antenna or cable
(H838HHR) Modulators
Cable only
A
(H838BID)
Master H838
B
+Pwr
Modulators
A
Slave H838
B
+Pwr
Modulators
A
Slave H838
Specifications: typical @ 25°C ± 5° C
Gain:
CATV/Ant input to TV output
Modulator input to TV output
TV output to CATV/Ant input
(5-42MHZ reverse channel)
Isolation
Modulator input to CATV/Ant
Bandwidth
Forward
Reverse
Max CATV/Antenna input
(64 channels)
Power supply (370-086 included)
Things To Watch For:
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 modulator channels (disappears
when you remove the CATV/antenna feed)
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.
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.
THE H838BID IS SUITABLE FOR USE WITH CATV SYSTEMS.
tm modules attach from the top
1
3
From From
Telco Telco
R R
4
T T
3 R R
T T
R R
2
T T
R R
1
T T
2
High Headroom Amp w/IR Engine
Televisions CATV
/Ant
High Headroom Amp w/IR Engine
Televisions CATV
/Ant
High Headroom Amp w/IR Engine
Televisions CATV
/Ant
H838HHR
3dB
-10dB
na
>80dB
5-806MHz
na
20dBmV
15 VDC @ 300mA
: The RF amplifier can be overloaded by
Telephone Master Hub (4 lines x 6 phones) Telephone Master Hub (4 lines x 6 phones)
ChannelPlus model H616
Expansion Expansion Telephones Telephones
Ports Ports
RJ31X RJ31X
Out Out
ChannelPlus model
2181 allows the H838
to expand IR control
also. Use one 2181 for
each slave H838.
H838BID
3dB
-10dB
-15dB
>35dB
54-806MHz
5-42MHz
20dBmV
15 VDC @ 300mA
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