Channel Plus Switch H838BID User Manual

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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B
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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