I.C.E Supertester 680 R Operator's Manual And Repair Manual page 6

Second Part
INSTRUCTIONS
T()R
USE OF
TI{E
ANAI.YSER PAIENIED MODET I.C.E. 680
R
T0 use the
I.C.E.
Model 680 R Analyser correctly and thus avoid possible
err0rs
in
operation,
it
is
essential
t0
carefully follow the !nstructions given
herewith.
For any
measurement
it
is
very
important
to
plug the
leads
into the
appropriate
sockets
comp letely.
ln
the
SUPIRTESTER
680 R
the five
common sockets
for the
different
measurement fields,
namely available
for
different
ranges, have
a double line f0r better
indentificati0n and with
the
exception
of the
commcn
for the
ohmmetric measurements,
are
located
left 0f
the
switch
that
doubles
the
ammetric and voltmetric ranges.
Before
effecting any
measurement,
make sure
that the
instrument
pointer is
exactly on zer0 by
rotatlng,
with the aid
0f
a
screwdriver,
the small button with
a
slot
situated on
the
casing
of the
instrunrent bel0v/
the
instrument panel.
All
measurements
with
direct current must be
read
on the
biack scale and ihose
with
alternating cirrrent on the red scale.
The same applies
to the
whiie and red
wording at
the
side
of the
relative
sockets.
ln
the
schematic
circuit
diagrams illustrated
in
the following the
scale
to
be
exaniined for
the correct
reading
is
marked
by a
much heayiet
line as
compared
with the
others.
When
a
hi.gh
precision reading
is
be
made
wiih the
SUPERTESTER
l.C.E. 680
R
indicator
I
instrument,
the pointer must be
read ihrough
the
mirror scale as follows: after
cgnnecting
the plugs t0 the circuit
undor test, the pointer nlust be given time
to
stop
oscillating
and
when
motionless
on
the
resulting indication,
it
should
be
looked
at with
0ne eye,
moving
the
head
until no
reflection
of the pointer in the
underlying mirror
is
seen
(that is, in
a
position perfectiy
perpendicular
t0
the
pointer). ln
such
a positi0n,
always without further
moving
the
b0dy,
the
reading
wi!l be without parallax errors, that is,
without those
eri.ors
due
t0
an off-perpendicular
p0siti0n of the
operaior.
b
When
effecting
measurements, make absolutely certain
that
n0
part 0f
the casing comes
into
c0ntact
with the circuits
being tested,
as
contact with
the
current fl0wing there
might
prove
dangerous.
O.C.
VOLTAGE MEASUREMEi.ITS
for
D-C.
voltage
measurements
introduce as
,ar
as
it
will g0
the black lead (negative)
into
the socket
in the
Iower
part of
the instrument
marked
w;th the
black wording on
a
white
ground
":"
and
the
other
red lead (positive) in
one
of the
side
sockets
als0
with
black
wordings
"100
rnV";
"2 V"; "10 V";
"50
V";
"200
V";
"500
V";
"1000
V"
according to
the range required.
When
there is
doubt about
the
magnitude
of
the voltage
to
be measured,
always
plug
into the
highest range s0 as
to
arroid subjecting
the
resistance
to
overloads.
If
necessary,
after the
first
reading,
the red
Iead can
be
moved
to the next
lowest
range
in
order
to
achieve
a
more accurate
reading.
Accurate scaie readings,
with
reference
to
the
range and therefore
to
the
selected
socket
are obtained taking into account the data
of
the following
table: