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Model
339A
Section
II
SECTION
II
INSTALLATION
2-1.
INTRODUCTION.
2-2.
This
section of the
manual
contains information
and
instructions
necessary
to
install
the
Model
339A
Distortion
Measurement
Set.
Also included
are
initial
inspection procedures,
power and grounding
require-
ments,
environmental
information,
and
packaging
instructions.
2-3.
INITIAL
INSPECTION.
2-4.
This
instrument
was
carefully
inspected,
both
mechanically
and
electrically,
before
shipment.
It
should
be
free
of
mars and
scratches
and
in
perfect
electrical
ordep.
The
instrument should be inspected
upon
receipt
for
damage
that
might have occured
in
transit.
If
the
shipping container or cushioning
material
is
damaged,
it
should be
kept
until
the
contents of
the
shipment have
been checked
for
completeness and
the
instrument has
been mechanically
and
electrically
inspected.
Procedures
for testing the
electrical
performance
of the
Model 339A
are given
in
Section
IV
of
this
manual.
If
the
contents
are
incomplete,
if
there
is
mechanical
damage
or
defect,
or
if
the
instrument does not
pass
the
Performance
Tests,
notify the nearest
Hewlett-Packard
Office.
(A
list
of the-
hp-
Sales
and
Service Offices
is
presented
at
the
back
of
this
manual.)
If
the
shipping container
is
damaged,
or
the
cushioning
material
shows
signs
of
stress,
notify the
carrier as well as the
Hewlett-Packard
Office.
Save
the
shipping
materials
for
the carriers inspection.
2-5.
PREPARATION FOR
USE.
2-6.
Power
Requirements.
2-7.
The Model 339A
requires
a
power
source of
100.
120,
220,
or 240
V
ac
(+5%
-
10%), 48
Hz
to
66
Hz
single
phase.
Maximum
power consumption
is
48
VA.
2-8.
Line Voltage Selection.
2-9.
Before connecting ac
power
to
the
Model 339A
make
sure the rear panel
line
selector
switches
are
set
to
correspond
to
the available
power
line
voltage
and
that
the
proper
fuse
is
installed,
as
shown
in
Figure
2-1.
The
instrument
is
shipped
from
the
factory with the
line
voltage
and
fuse selected for 120
V
ac operation.
2-10.
Power
Cable.
2-11.
Figure
2-2
illustrates
the
standard configurations
used
for
-hp-
power
cables.
The
number
directly
below
each drawing
is
the -hp- part
number
for a
power
cable
equipped
with a
connector
of
that
configuration.
If
the
100
Volt!
IZO
Volts
NOMINAL
OPERATING
RANGE
VOLTAGE
-
10%.
+
5%
of
nominal
FUSE
100
volts
90
to
105
volts
120
volts
108
to
126
volts
0.25
A
220
volts
198
to
231
volts
240
volts
216
to
252
volts
Figure
2-1.
Line Voltage
Selection.
appropriate
power
cable
is
not
included
with
the
instrument,
notify the nearest
-hp- Sales
and
Service
Office
and
the
proper
cable
will
be provided.
2-12.
Grounding
Requirements.
2-13.
To
protect
operating
personnel,
the
National
Electrical
Manufacturer's
Association
(NEMA)
recommends
that
the
instrument
cabinet
and
front panel
be
grounded.
The Model 339A
is
equipped
with
a three
Figure
2-2.
Power Cord
Configurations.
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