Hitachi VM-3100A User Manual

12
Outdoor
Antenna
Grounding—lIf
an
outside
antenna
or
cable
system
is
connected
to
the
video
product,
be
sure
the
antenna
or
cable
system
is
grounded
so
as
to
provide
some
protection
against
voltage
surges
and
built-up
static
charges.
Sec-
tion
810
of
the
National
Electrical
Code,
ANSIUNFPA
No.
70-1984,
provides
information
with
respect
to
proper
grounding
of
the
mast
and
supporting
structure,
grounding
of
the
lead-in
wire
to
an
antenna
discharge
unit,
size
of
grounding
conductors,
location
of
antenna-discharge
unit,
connection
to
grounding
electrodes,
and
requirements
for
the
grounding
electrode.
See
example
below.
EXAMPLE
OF
ANTENNA
GROUNDING
ACCORDING
TO
NATIONAL
ELECTRICAL
CODE
INSTRUCTIONS
CONTAINED
IN
ARTICLE
810
—
“RADIO
AND
TELEVISION
EQUIPMENT”
SERVICE ENTRANCE
POWER LINES ee
STANDOFF b
INSULATORS
SERVICE
Ke
?
A
eee
LEAD-IN
ENTRANCE
‘
:
EQUIPMENT ANTENNA DISCHARGE
UNIT &
TO EXTERNAL ANTENNA
TERMINALS OF PRODUCT
POWER SERVICE
GROUNDING
ELECTRODE SYSTEM
(e.g.
interior
metal
GROUND
WIRES
2:5
water
pipe)
GROUND CLAMPS
BONDING JUMPER &
OPTIONAL
ANTENNA
GROUNDING
ELECTRODE
DRIVEN
8
FEET
(2.44m)
INTO
THE
EARTH
IF
REQUIRED
BY
LOCAL
CODES.
SEE
NEC
SECTION
810-21(f).
a.
Use
No.
10
AWG
copper
or
No.
8
AWG
aluminum
or
No.
17
AWG
copper-clad
steel
or
bronze
wire,
or
larger
as
ground
wires
for
both
mast
and
lead-in.
b.
Secure
lead-in
wire
from
antenna
to
antenna
discharge
unit
and
both
ground
wires
to
house
with
stand-off
insulators,
spaced
from
4
feet
(1.22
meters)
to
6
feet
(1.83
meters)
apart.
c.
Mount
antenna
discharge
unit
as
close
as
possible
to
where
lead-in
enters
house.
d.
Use
jumper
wire
not
smaller
than
No.
6
AWG
(13.3
mm?)
copper,
or
the
equivalent,
when
a
separate
antenna-grounding
electrode
is
used.
See
NEC
Section
810-21(j).
13
Power
Lines—An
outside
antenna
system
should
not
be
located
in
the
vicinity
of
overhead
power
lines
or
other
electric
light
or
power
circuits,
or
where
it
can
fall
into
such
power
lines
or
circuits.
When
installing
an
outside
antenna
system,
extreme
care
should
be
taken
to
keep
from
touching
or
approach-
ing
such
power
lines
or
circuits
as
contact
with
them
might
be
fatal.
Installing
an
outdoor
antenna
can
be
hazardous
and
should
be
left
to
a
professional
antenna
installer.
USE
14
Cleaning—Unplug
this
video
product
from
the
wail
outlet
before
cleaning.
Do
not
use
liquid
cleaners
or
aerosol
cleaners.
Use
a
damp
cloth
for
cleaning.
15
Object
and
Liquid
Entry—Never
push
objects
of
any
kind
into
this
video
product
through
openings
as
they
may
touch
dangerous
voltage
points
or
short-out
parts
that
could
result
in
a
fire
or
electric
shock.
Never
spill
liquid
of
any
kind
on
the
video
product.
16
Lightning—For
added
protection
for
this
video
product
during
a
lightning
storm,
or
when
it
is
left
unattended
and
unused
for
long
periods
of
time,
unplug
it
from
the
wall
outlet
and
disconnect
the
antenna
or
cable-system.
This
will
prevent
damage
to
the
video
product
due
to
lightning
and
power-line
surges.
SERVICE
17
Servicing—Do
not
attempt
to
service
this
video
product
yourself
as
opening
or
removing
covers
may
expose
you
to
dangerous
voltage
or
other
hazards.
Refer
all
servicing
to
quali-
fied
service
personnel.
1
8
Conditions
Requiring
Service—Unplug
this
video
product
from
the
wall
outlet
and
refer
servicing
to
qualified
service
personne!
under
the
following
conditions.
a.
When
the
power-supply
cord
or
plug
is
damaged.
b.
If
liquid
has
been
spilled,
or
objects
have
fallen
into
the
video
product.
c.
If
the
video
product
has
been
exposed
to
rain
or
water.
d.
If
the
video
product
does
not
operate
normally
by
following
the
operating
instructions.
Adjust
only
those
controls
that
are
covered
by
the
operating
instructions.
Improper
adjustment
of
other
controls
may
result
in
damage
and
will
often
require
extensive
work
by
a
qualified
technician
to
restore
the
video
product
to
its
normal
operation.
e.
If
the
video
product
has
been
dropped
or
the
cabinet
has
been
damaged.
-
f.
When
the
video
product
exhibits
a
distinct
change
in
performance—this
indicates
a
need
for
service.
4
9
Replacement
Parts—When
replacement
parts
are
re-
quired,
have
the
service
technician
verify
that
the
replace-
ments
he
uses
have
the
same
safety
characteristics
as
the
orig-
inal
parts.
Use
of
replacements
specified
by
the
video
product
manufacturer
can
prevent
fire,
electric
shock
or
other
hazards.
20
Safety
Check—Upon
completion
of
any
service
or
repairs
to
this
video
product,
ask
the
service
technician
to
perform
safety
checks
recommended
by
the
manufacturer
to
determine
that
the
video
product
is
in
safe
operating
condition.
Printed in Japan
2817359-1R3
4641756

Hitachi VM-3100A Specifications

General

Brand	Hitachi
Model	VM-3100A
Category	Camcorder
Language	English