INSTALLATION
RACK MOUNTING
The instrument may
be
mounted
in a 19 inch
rack
using
the kit available
as an
optional
accessory. Fitting instructions
are as
follows:-
(1)
Removal
of
instrument feet may
be
carried out
without
removing
the bonom
cover.
Ease the centre bungs from the feet to expose
the
retaining screws which
are
held in captive
nuts.
(2)
The front panel
stowage
cover
is held
in position by
two strike plates located
at
front
of
the case side rails. These are attached by
self
tapping
screws
and
have
to be removed.
(3)
To remove
the instrument handle,
first
puli off
the
brown
plastic
caps at
the
ends
of
the
handle side arms. Next
remove
the
exposed
central retaining screws
from
either side.
(4)
Fit
the
rack brackets securing
with
an M5
x
16
pan
head
screw and washer,
as
supplied,
on
either side. These
screws
flLinto
the.
position
formerly
occupied
by
the
handle retaining screws.
Note
Ensure
adequate outlet for the blown air
cooling
system.
FITTING
THE
BATTERY OPTION
The
external
battery pack,
available
as
an
optional
accessory,
Is
mounted
on top
of
the instrument
as
follows:-
(1)
Position the battery pack above the
instrument
and
fit
the
projecting
lugs
at the
rear
of the battery pack (tilting as necessary)
into
the
slots
in
the
instrument’s
rear
feet.
(2)
Secure
the pack in place by
passing
the
carrying
strap
around
the
body
of the
instrument
then pulling the strap
through
the
friction
buckle
until
tight.
Hold
the
remaining
strap
length
in place
using
the
Velcro
fastener.
(3)
To
release,
press
the friction bar to
unclamp
the
strap
then
ease
the lugs
out or
the rear feet.
(4)
Unciip the
connector
by
pressing on
its sides
to
release
it
from
its
storage
point,
and
pull
out the
attached
lead
from
the
case.
Reclip
the
connector to
the DC
SUPPLY
socket on
the rear
panel.
SAFETY
TESTING
Where
safety
tests
on
the
AC
supply
input
circuit
are
required,
the
following
proce-
dures
can
be
applied. Tnese comply
with
BS
4743
and
EEC
Publication
348.
Tests
are
to
be
carried out
a follows and in the
order
given, under
ambient
conditions,
to
ensure
that
AC
supply input
circuit
components
and
wiring
(including
eanhing)
are
safe.
(1)
Eanh
lead continuity
test
from any part
of
the
metal
frame to
the
bared
end
of
the flexible
lead
for the
earth pin of
the user’s
AC
supply
plug.
Preferably
a
heavy
current
(about
25A)
should be
applied for not
more
than 5
seconds.
Test
limit:
not
greater
than 0.5
Cl.
(2)
500
V
DC insulation
test
from
the
AC
supply
circuit
to
earth.
Test
limit:
not less
than
2 M52.
2-2
46881
-5
22N
Apr.
88
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