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OPERATION
AND
APPLICATION
GENERAL INFORMATION
This section outlines
the procedures and precautions necessary
for
operation.
It
identifies
and
briefly
describes
the functions of the front
panel
controls
and
indicators,
and
explains the
practical aspects of
operation to enable an operator to
evaluate
quickly the
instrument's
main
functions.
SWITCHING
ON
THE
INSTRUMENT
After the instrument has
been connected
to
the mains
voltage
in
accordance
with
clauses 2.2.4
and
2.3,
it
can be switched
on by
depressing the mains switch
POWER.
The white
spot
inside
the
POWER
switch
mechanically
indicates
that the instrument
is
switched
on.
Having switched
on
the instrument,
it
is
immediately ready
for use.
With
normal
installation
in
accor-
dance with Section 2.4
and
after
a
warming-up time
of
5 minutes, the
characteristics specified
in
Section
1
.2
are valid.
After switching
power
off,
a
time
interval!
of
at
least
5
s
should
pass
by
-allowing the capacitors of the
power
supply
to
discharge- before
the device
is
switched
on
again.
This procedure
is
necessary
to
set
the
internal logic circuitry
to
its
correct
initial
condition.
WARNING:
Before switching
on,
ensure that
the instrument
has
been
installed in
accordance
with
the
instructions
mentioned
in
Section
2.
SELFTEST ROUTINE
Immediately
after
power
being switched
on
a seiftest
routine
is
performed,
whereby
several
functions
are tested.
For
check of the
display
all
segments
of
the decimal
and
dimension
indications,
decimal
points
and
equivalent-circuit
symbols
are
shown
for
3
seconds.
After
this a
possible
error
will
be
indicated
by
the
display readings
EQ
...
E3.
The
equivalent-circuit
sym-
bols are
not
shown.
The
error
codes
are pointing
towards the
following
failures.
EO
El
E2
E3
RAM
test,
microprocessor
s
measuring
ranges
ahalog/digital
converter
reference
measurement
Further error indications
are
explained
in
chapter
3.4.6.
When
the
seiftest
routine
is
terminated
the
instrument
is
set
to the
initial state
performing
the default
mode
RCL AUTO.
With
the zero -capacitance
Co
TRIM
being properly
compensated and no component
connected the
initial
state
is
indicated
by
the
following display
reading:
®
RCL AUTO
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