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The SR
-21
Installation Procedure
is as
follows:
(Refer
to
Figure
4)
1.
Using the #6-32 screws, lockwashers, and nuts, mount
the
angles
to the
back side
of the
rack extensions.
Do not
tighten
the
screws
at
this time.
2.
Using the #8-32 screws and lock washers, mount
the
angle
and
rack
extension assemblies
to the
tapped holes
in
the
sides
of
the 533.
Do not tighten the screws at this time.
3.
The 533 front panel
is
adjustable
to
allow optimum
alignment
of the
front panel with
the
rack extensions.
For
precise alignment, loosen
the
front panel mounting screws,
as
well
as
the top and
bottom cover screws
(1/2
turn
is
adequate).
Adjust the relative positions
of the
brackets
and panels, and
then tighten all hardware.
SEE
SECTION
2.5
BEFORE INSTALLING
THE ASSEMBLY
IN
A RACK.
2.10 RACK
MOUNTING TWO UNITS (MODEL
533)
The
DR -21
kit (optional) allows mounting
of
two
533's
side by side
in
a
standard
19"
USASI rack.
The assembly occupies
two
standard spaces (3-1/2" high).
The
DR
-21
kit should contain
the
following items:
QUANTITY
2
2
2
4
4
DESCRIPTION
Joining Plates
Rack Mounting Angles
Spacer Plates
#8-32 Pan Head Screws
#8
Lock Washers
UREI PART NUMBER
25-11168
25-12106
25-12107
The DR
-21
Installation Procedure
is
as
follows:
(Refer
to
Figure
5)
1.
Place
the two 533's side by side,
with front panels
touching. Remove four screws from
the top of
each
unit, as
illustrated,
to
permit positioning
of
the
joining plate.
Replace
the
screws through
the
plate
and covers, but do not
tighten completely
at
this time.
2.
Turn
the
assembly upside
down, and install the bottom
joining plate
in
the same
fashion
as
the top
joining plate
(step
1).
-9
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