5. Installation
SETTING UP
Always
place the instrument so that the air cir-
culation through
the
airvents in the bottom
plate and the
top
cover is not impeded.
The
ambient temperature should be between
0°C and +40°C
for operating within
the
specification.
SAFETY
REGULATIONS
Upon delivery, the instrument complies with
the
required
safety regulations. To maintain this
condition
and to ensure
safe operation, it is
recommended
to follow the
instruction below.
BEFORE
CONNECTING
Mains voltage
Check whether
the instrument is adapted
to
the
nominal mains
voltage.
Protection
This
instrument is protected according
to class
I
(protective
earth) of the
lEC 348
or VDE
041
1
.
The mains
cable provides earth connection.
Outside specially protected rooms,
the mains
plug must be connected only
to
sockets with
earthed contact.
MAINTENANCE AND REPAIR
Failure
and
excessive stress
If
the
instrument is suspected of
being unsafe,
take it out of operation permanently.
This is the case wheo the instrument
-
shows physical damage
-
does
not
function anyore
-
is stressed beyond the tolerable limits
(e.g.
during storage and transportation)
Dismantling
the
instrument
When removing covers or other parts
by means
of tools, live part or terminals could
be ex-
posed.
Before opening
the instrument, discon-
nect
it from all power sources.
If
the
open live instrument
needs
calibration,
maintenance or a repair, it must
be
preformed
only by
trained
personnel being aware
of the
risks.
After
disconnection from all
power sour-
ces, the
capacitors
in
the
instrument
may
remain
charged for some
seconds,
observe the
circuit diagrams.
Repair,
replacing
parts
Repair
must be made
by trained personnel.
En-
sure
that the construction
of the instrument
is
not altered
to the detritment
of safety.
Above
all, leakage
paths, air
gaps and insulation
layers
must not
be reduced.
When
replacing,
use only
original parts. Other
spare parts are
only acceptable
when safety
precautions for
the instrument
are not impaired.
FUSES
For
220V mains voltage, a
400mA fuse
with
delayed
action is used.
For 110V,
a
delayed
800mA fuse is required.
The fuse is
available
at
the rear panel
of
the
generator.
The fuse-holder can
be unscrewed for
replacement of the fuse.
Only
use the specified fuses.
MOUNTING
The instrument may be
used
in
any desired
position. Do not position
the
instrument
on any
surface which produces or radiates
heat, or in
direct sunlight.
EARTHING
Before
switching on, the instrument must
be
earthed in conformity
with the local safety
regulations. The mains cable fixed
to the in-
strument includes a protective conductor,
which is
connected to the earth contacts of the
plug. Thus,
when connected to an earthed
mains socket the cabinet of
the
instrument is
consequently
connected
to
the protective earth.
WARNING:
Connect
the
mains cable plug
only
to a socket with
protective
earth contacts.
This
protection
must
not be made
ineffective,
e.g. by
using an extension
cable without
earth
protection!
The circuit earth potential
applied to the ex-
ternal contacts of
BNC
sockets
is connected to
the cabinet. The external contacts of
the
BNC
sockets must not be used
to
connect a protec-
tive
conductor.
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