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SECTION II
Model 4145A
2-12.
POWER CABLE
2-13.
To
protect
operating
personnel,
the
National
Electrical
Manufacturer's
Association
(NEMA)
recommends
that
the instrument
panel
and cabinet
be grounded.
The Model
4145A is
equipped
with
a three-conductor
power
cable
which,
when
plugged
into
an
appropriate
receptacle,
grounds
the instrument.
The offset
pin on the power cable is the ground wire.
assistance
is needed
for
selecting
the correct
power
cable,
contact
the
nearest
Hewlett-
Packard off ice.
2-16.
OPERATING
ENVIRONMENT
2-17.
Temperature.
The
instrument
may
be
operated
in temperatures
from +lO°C to +40 OC.
2-14.
To preserve
the protection
feature
when
operating
the instrument
from
a two
Contact
outlet,
use a three
prong to two prong adapter
(HP
Part
No.
1251-8196)
and
connect
the
grounding
tab
on the
adapter
to
power
line
ground.
CAUTION
2-l 8. Humidity.
The
instrument
may
be
operated
in
environments
with
relative
humidities
to
'7 0% at
40 O C.
However,
the
instrument
should
be
protected
from
temperature
extremes
which cause condensation
within the instrument.
THE MAINS
PLUG
MUST ONLY
BE
INSERTED
IN
A SOCKET
OUTLET
PROVIDED
WITH
A
PROTECTIVE
EARTH
CONTACT.
THE
PRO-
TECTIVE
ACTION
MUST
NOT
BE
NEGATED
BY
THE
USE
OF
AN
EXTENSION
CORD
(POWER CABLE)
WITHOUT
PROTECTIVE
CONDUC-
TOR
(GROUNDING).
2-19.
INSTALLATION
INSTRUCTIONS
2-20.
The HP Model 4145A can be operated
on
the bench
or in a rack
mount.
The 4145A is
ready
for bench operation
as shipped
from
the
factory.
For
bench
operation
a
two-leg
instrument
stand is used. For use, the instrument
stands
are designed
to be pulled
towards
the
front of instrument.
2-21.
Installation
of Options 907, 908 and 909.
2-15.
Figure
2-2
shows
the
available
power
cords, which
may be used in various
countries
including
the standard
power cord furnished
with
the
instrument.
HP Part
number,
applicable
standards
for
power
plug,
power
cord
color,
electrical
characteristics
and
countries
using
each power
cord
are listed
in the
figure.
If
2-22.
The 4145A can be installed
in a rack and
be operated
as a component
of a measurement
system.
Rack
mounting
information
for
the
4145A is presented
in Figure 2-3.
IOOV
OPERATION
12OV
OPERATION
220V
OPERATION
240V
OPERATION
22ov-
ir
12ov*
22ove
12ov-
22ow
12ov-
240vwi r Ioovw
240V
N
IOOV-
240vwl TOOV-
ir
cll
Fuse : 2.5A 250V 2,
(HP P/N: 2110-0015)
Fuse :
1.25A 250V CL
(HP P/N : 2110-0305)
Figure 2-l.
Voltage and Fuse Selection.
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