2.1.3. Connection of a Mains Supply
Before connecting a mains supply, the following checks and adjustments should be
carried out to ensure the safe operation
of
the apparatus.
Mains Voltage Setting
The 2032 can be connected
to
a 100
to
127 V
or
200
to
240 V ± 10% AC single phase
mains supply operating at
50
to
60Hz, ±
5%.
Prior to connection, the setting
of
the
MAINS VOLTAGE SELECTOR should be checked. Should
it
be incorrectly set,
it
may
be turned to its
correct
setting by using a small coin
or
a large screwdriver.
Mains Fuse Rating
Ensure the the
correct
fuse is fitted. It should be as follows:
100-127V: 4A fast blow,
BrOei&Kjmr
part
number
VF
0058
200-240
V:
2A fast blow,
BrOel
&
Kjmr
part
number
VF
0057
Make sure that only fuses with the required rated current and
of
the specified type are
used. The use of mended fuses and the short circuiting
of
the fuse holder must be
avoided.
Mains
Socket
Connections
Once the mains voltage setting and fuse have been checked, the mains supply may be
connected
to
the MAINS INPUT socket
of
the apparatus using the power cable
BrOel
&
Kjmr
part
number
AN
0020 provided. The 2032 has a high standard
of
safety
insulation in accordance with Safety Class
II
of
IEC
348
and therefore need not be
connected to the protective earth contact
of
a mains supply outlet.
2.2. GROUNDING CONSIDERATIONS
10
Indiscriminate grounding
of
instruments can introduce ground loop interference.
To
prevent this
it
is necessary to ensure that the signal ground line
of
the 2032 and
of
other instruments with which
it
is used, are grounded
at
one
point
only in the measure-
ment system.
To
do
this without prejudicing the operating safety
of
the instruments,
proceed as follows:
1.
Connect the signal ground lines
of
all instruments together. This is done automati-
cally through the screens
of
the input and output cables used
to
interconnect the
instruments.
2.
Where the same instruments are interconnected by more than one signal cable
or
combination
of
signal and remote control cables each containing a signal ground
connection, keep the cables short and close together
or
disconnect the signal
ground line
of
all but one
of
them.
3.
Where non IEC 348 Safety Class I
or
II
instruments are employed, disregard item 4
(following) and check that the signal ground line and chassis
of
these instruments
are connected to mains ground, either via their mains connector
or
via one
of
their
ground terminals.
In
addition keep their power cables and ground lines
short
and
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