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INSTALLATION
CABLE SYSTEM
CABLE SYSTEM
INFORMATION
Cable systems vary in features and services.
The
information and figures which follow cover most
installations. If you need information about other
installations, please
write
to Service at the
nearest Hitachi address listed at the back of this
manual.
The tuning abilities of your VCR and
the type of cable service you have will determine
what connections cart be used. The VCR Tuning
Range is listed in the rear of this Manual.
VCRs
with Cable Tuning Ability (CTA) are able to tune
channels listed for CATV.
Most cable services
will be one of the following
four types.
1. Basic Cable: Apartment buildings and planned
communities may provide this type of ser-
vice.
No channel selection Cable Box is used
with the TV.
All channels are received using
VHF channels 2-
13.
With this system, no
special connections or operating procedures
are needed.
Connect the VCR and TV as
shown in figure C1.
2. Extended Cable -- A Cable Box is used for TV
Channel Selection: The 1_/ is usually set to
channel 3 or 4, and all channel selection is per-
formed
using the cable company supplied
Cable Box.
In this type of system, no extra
cost channels are available, and no channels
are scrambled.
A CTA VCR can select channels on this sys-
tem without a Cable Box, if the channels on
the cable are in the VCR tuning range.
The
Cable Box may still be needed for the TV, un-
less the VCR is used as a cable converter.
You can use figure C1, C2, or C3 for Extended
Cable connection.
Connections in C1 and C2
need no additional accessories.
The connec-
tion of figure C3 allows recording and watch-
ing different programs but operation is more
complicated.
3. Extended Cable With Extra Cost Channels --
No Scrambled Channels On System-Cable
Converter Box Used For TV: In this type of ca-
ble system, extra cost channels are added or
deleted before the cable enters the customer
home.
If a CTA VCR and CTA TV am used, a Cable
Box is not needed. Connections can be made
as shown in figure C1. If a non-CTA TV is
used with a CTA VCR, either figure C2 or C3
can be used.
If both non-CTA VCR and TV
are used, figure C2 must be used.
E/2
4.
Extended Cable With Extra Cost Channels --
Scrambled
Channels
on
System-Cable
Descrambler/Converter
Box Used For TV: In
this type of system the cable company sup-
plied Box must always be used to get proper
reception of Extra Cost channels.
All Extra
Cost channels on the cable are scrambled, but
the Cable Box unscrambles any that you pay
extra to view.
Channels included in the basic
cable service fee are usually not scrambled,
and can be tuned by a CTA VCR or CTA TV.
ADDITIONAL
INFORMATION
When, any type of scrambling is used for Extra
Cost channels, the Cable Box must be used to
view or record those channels.
A CTA VCR
does not include unscrambling ability.
That abili-
ty is restricted to only cable company supplied
equipment.
On cable systems with scrambled
channels, you have several choices.
Among
them are:
a. Recording and watching only channels selec-
ted by the Cable Box (see figure C21.
b. Adding a second cable company supplied
Box.
c. Adding switches to allow either recording and
watching the channel selected by the Cable
Box or recording a channel which is non-
scrambled while watching another channel
selected by the Cable Box (see figure C3).
Two Cable Systems: In some areas, two cables
are used as inputs to the Cable Box. One cable
may contain mostly non-scrambled channels, the
other mostly Extra Cost scrambled channels.
When you have a two-cable system, the cable
with non-scrambled channels you wish to record
(Cable A or Cable B) can usually be connected as
in figure C3.
One Cable can be connected di-
rectly, or both cables can be accessed by using
the Cable Box.
If you need to use both cables
directly, write Hitachi service for a connection
diagram.
CAUTION:
Only high quality, low loss switches
and splitters should be used.
All connections
must be with shielded Coax cable.
If your added
connections degrade the performance of Extra
Cost channels, all connections should be re-
moved.
The circuit of figure C2 should cause
least signal loss. If even the circuit of figure C2
is not satisfactory, consult your cable company
about installation.
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