Table of Contents
Advertisement
2 .5.3.8
The
following:
assembly
is
required
to
lock the instrument
into
its
normal
operating
position
on
the rack:
a.
Slide
two
self
-anchoring #10-32
tinnerman
nuts
on the mounting-rail of
the
rack (each
side).
These
nuts should be aligned with the angle-
bracket
slots.
Omit
the
tinnerman
nuts
if
the
mounting-rail
is
tapped
for
#10-32 screws
b.
Slide
the
instrument
fully
into
the
rack
until
the angle
brackets
strike
the slide-mount bracket screws.
Secure
the instrument
in
place using
four
phillips
panhead
#10-32 x
3/4
screws
2.6
MISCELLANEOUS OPTION
INSTALLATION
2.6.1
Ovened Frequency
Standards 404392
and 404384
(Options
04
A
and
04E)
2.
6.1.1
Refer
to
Figure
2.7 for
these procedures.
The
installation
package
includes:
a.
Oscillator
assembly
(1)
P/N
404397
for
P/N
404386
for
Option
04
Option
04
b.
#4
split
lock
washers
(2)
P/N
617127
c.
#4
flat
washers
(2)
P/N
617102
d.
M3
x
8
screws
(2)
P/N
611067
2.
6.1.2
Installation
a.
Disconnect
the
AC
power
cord
at
the rear panel
b.
Loosen, but
don't
remove,
the
two
rear
comer-feet by
unfastening the
four
retaining
screws (two
per
foot).
Back
the
corner
feet
out
approximately
5/8 inch.
Slide
the top cover
toward
the rear
of the
unit,
then
lift
up and
out
to
remove
c.
Remove
the currently
fitted
frequency
standard,
according
to
the
following
instructions:
If
the
standard
10
MHz
oscillator
is
installed:
1.
Remove
the
two
screws and washers attaching
the
oscillator
assembly
to
the rear
panel
via the
two
threaded standoffs
2.
Disconnect
the
flying
lead
from
the
motherboard
at
SKI
4,
then
lift
the
oscillator
assemby
out of
the chassis
If
Option
04A/04E
is
installed:
1.
Remove
the
two
screws and washers attaching
the
oscillator
assembly
directly
to
the rear
panel
2,
Disconnect
the
flying
lead
from
the
motherboard
at
SKI
4,
then
lift
the
oscillator
assembly out
of the
chassis
2-11
Advertisement
Table of Contents
