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Figure 2-2.
Method
of
mounting the Generator in a relay
rac
k.
(C)
on the inner
sides
of
the cabinet, near the front. Do
not
damage the threads in the threaded holes.
Push
from
inside
the cabinet.
e.
Attach one Rack
Adaptor
Assembly (handle)
to
each
si
de
of
the cabinet,
as
shown, using
two
5/16-inch screws
(D) in
each
. Note that the screws enter in opposite direc-
tions, one
from
inside the cabinet and one
from
outside.
Use
the upper and lower holes in the assemblies.
f. Install the instrument in the cabinet and lock
it
in
place
with
the
two
captive screws through the rear panel
that
were loosened in step
b.
g_
Slide the entire assembly
into
the relay rack and lock
it
in place
with
the
four
9/16-inch screws (E)
with
captive
nylon
cup washers.
Use
two
screws on
each
side and tighten
them by inserting a screwdriver through the holes (F) in the
handles.
To
reconvert the instrument
for
bench
use,
reverse
the
above procedure.
2.3 RELAY-RACK MOUNTING.
The 1383-9701 (rack-mounted) Random-Noise Genera-
tor
is
delivered completely assembled in a metal cabinet
ready
for
mounting in
an
EIA
standard 19-inch relay rack.
(If desired, the OUTPUT connector on the
front
panel
of
the relay-rack model
can
be
moved
to
the rear panel. Refer
to
pa
r
ag
raph 2.4).
To install the rack model in a relay rack, slide the instru-
ment (in its cabinet)
into
the rack and lock
it
in pl
ace
with
the
four
9/
16-inch
sc
r
ews
(E, Figure 2-2)
with
captive nylon
cup washers.
Use
two
sc
r
ews
on
each
side and tighten them
by inse
rtin
g a screwdriver through the holes (F) in the
handl
es.
To
convert the rack model
to
a bench model, remove the
ra
ck-adaptor
set
by reversing the procedure
of
paragraph
2.2.
2-2 INSTALLATION
2.4
MOVING
THE OUTPUT CONNECTOR.
To
move the OUTPUT connec
tor
to
the r
ear
panel
(see
Figure 8-2) •
a. Loosen the
two
capt
ive
screws at the rear
of
the in·
strument (6, Fig. 1-2), and remove the instrument
from
its
cabinet.
b.
Remove and
save
the gray cover plate (P/N 0480-
2470)
from
its hole in the rear panel.
c.
Remove the
four
screws
that
hold the
OUTPUT
con-
nector in the
front
panel.
d.
Move the connector
to
the r
ea
r panel. Pull the rubber
grommets
from
the keyhole-shaped slots they are in, sli
de
them along the cable
as
necessary, and
press
them
into
the
other slots
so
that the cable
eas
ily
r
eaches
the rear panel
(see
Figure 8-2).
e.
Use
the
four
screws
to
fasten the connector
into
the
rear panel. (The wider pair
of
oute
r-
conductor contacts
are
usually aligned vertically.)
f.
Press
the
snap
plug removed in step b
into
the hole in
the
front
panel
to
serve
as
a cover.
g.
Place
the instrument back in its cabinet, and tighten
the
two
screws at the rear
of
the instrument.
h.
To
replace the connector in the
front
panel, r
eve
r
se
the above procedure.
2.5 CONNECTING THE POWER.
The wiring
of
the power transformer
ca
n be s
wit
ched, by
means
of
the 2-position slide switch (4, Figure 1-2) on the
rear panel,
to
accept 50-
to
400-Hz line power
of
either
100-125 V or 200-250 V.
Connect the three-wire power
cab
le (P/N 4200-9622,
supplied)
to
the line and
to
the 3-terminal male connector
(5, Figure 1-2) on the rear panel. One 0.3-A fuse and one
0.6-A fuse are
used
for
either line voltage. Power consump-
tion
is
approximately 35
W.
