User's Manual
3-28
PMP320HDW2v1
Preliminary
JUL
2010
PMP
320
Hardware
Installation
Installing
the
GPS
Antenna
Installing
the
GPS
Antenna
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Outside
the
CMM4
enclosure,
the
CMM4
requires
a
GPS
antenna
and
power
suppl
y
.
The
GPS
antenna
must
be
installed
in
an
area
with
clear
access
for
strong
signal
reception,
but
does
not
need
to
be
mounted
high
on
the
tower
.
NOTE
Orient
the
GPS
antenna
so
it
has
clear
access
to
the
southern
horizon,
up
to
20
degrees.
Do
not
install
the
GPS
as
the
highest
object
at
the
site.
Information
on
GPS
cable
planning,
ordering,
and
design
is
covered
in
GPS
Coax
Cable
on
page
3
-
8
.
The
following
information
describes
the
recommended
tools
and
procedures
to
mount
the
GPS
antenna.
Recommended
Tools
for
GPS
Antenna
Mounting
The
following
tools
and
materials
are
needed
for
mounting
the
GPS
antenna:
•
3/8
inch
nut
driver
•
12
inch
adjustable
wrench
•
7/16
inch
wrench
•
Needle
-
nose
pliers
•
electrical
tape
for
all
GPS
connections
•
water
-
tight
tape
for
all
GPS
connections
Mounting
a
GPS
Antenna
P
erform
the
following
procedure
to
mount
a
GPS
antenna.